Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Salt Lake City, UT
Issued by NWS Salt Lake City, UT
943
FNUS55 KSLC 182000
FWFSLC
Fire Weather Planning Forecast for Utah
National Weather Service Salt Lake City UT
200 PM MDT Mon Aug 18 2025
...HOT AND VERY DRY THROUGH TUESDAY; MOISTURE RETURNS MIDWEEK...
.BROADCAST DISCUSSION...High pressure will strengthen across
the region through Tuesday bringing a warming and drying trend.
Monsoon moisture will spread back into the region for the latter
half of the week, bringing showers and thunderstorms along with
cooler temperatures and higher humidities.
.DISCUSSION...High pressure becoming established near the Four
Corners region will maintain hot and dry conditions across the
region through Tuesday. Temperatures will trend a few degrees
warmer Tuesday afternoon and challenge a few daily records. RH
will trend lower as well, falling into the single digits across
most low-mid elevations with poor overnight recovery continuing
through Tuesday night.
Monsoon moisture will begin returning to the region by Wednesday,
then increase through the remainder of the week and into the
upcoming weekend. Initially this moisture will be confined to
the mid levels Wednesday, resulting in high based showers and
dry thunderstorms with little if any rainfall. By Thursday, as
this moisture continues to increase, a mixture of wet and dry
thunderstorms can be expected before storms fully transition to
wet with wetting rains more common by the end of the week. With
this increase in moisture, RH will trend higher during the latter
half of the week while temperatures trend cooler.
***Thunderstorms imply strong, gusty and erratic winds***
***All winds are 20 foot, 10-minute averages***
UTZ478-191230-
Salt Lake Desert-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....59-69.
24 hr trend......Unchanged.
Max humidity........25-35%.
24 hr trend......8% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 15 mph.
.TUESDAY...
Sky/weather.........Sunny (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....88-97 near 5000 feet.
77-84 near 8000 feet.
24 hr trend......4 degrees warmer.
Min humidity........6-16%.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South 15-20 mph.
Mixing height.......14400 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Mostly cloudy (50-60% cloud cover) until 2400,
then partly cloudy (35-45% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....63-73.
24 hr trend......5 degrees warmer.
Max humidity........26-36%.
24 hr trend......2% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 15 mph.
.WEDNESDAY...
Sky/weather.........Partly sunny (45-55% cloud cover) until 1200,
then partly cloudy (25-35% cloud cover).
Chance lightning....10%.
CWR.................0%.
Max temperature.....89-99 near 5000 feet.
78-85 near 8000 feet.
24 hr trend......1 degree warmer.
Min humidity........11-17% near 5000 feet.
15-21% near 8000 feet.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest 15-20 mph.
Mixing height.......15200 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Lows in the upper 60s in the valleys
and in the lower 60s in the mountains. Highs in the mid 90s in
the valleys and in the upper 70s in the mountains. Winds
generally less than 15 mph.
.FRIDAY...Partly cloudy. Isolated showers and thunderstorms. Lows
in the upper 60s. Highs in the mid 90s in the valleys and around
80 in the mountains. Winds generally less than 15 mph.
.SATURDAY...Partly cloudy. Scattered rain showers and isolated
thunderstorms. Lows in the upper 60s in the valleys and in the
mid 60s in the mountains. Highs in the lower 90s in the valleys
and in the upper 70s in the mountains. Winds generally less than
15 mph.
.SUNDAY...Mostly cloudy. Scattered rain showers and isolated
thunderstorms. Lows in the upper 60s. Highs around 90 in the
valleys and in the mid 70s in the mountains.
.MONDAY...Mostly cloudy. Scattered rain showers and isolated
thunderstorms. Lows in the mid 60s in the valleys and around
60 in the mountains. Highs in the upper 80s in the valleys and in
the lower 70s in the mountains.
=
$$
UTZ479-191230-
Wasatch Mountains-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....51-61.
24 hr trend......2 degrees warmer.
Max humidity........28-38% near 5000 feet.
21-31% near 8000 feet.
24 hr trend......16% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 15 mph.
.TUESDAY...
Sky/weather.........Sunny (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....91-99 near 5000 feet.
79-88 near 8000 feet.
24 hr trend......5 degrees warmer.
Min humidity........6-14%.
24 hr trend......2% drier.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......14300 ft AGL.
Climatology......95-97th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (20-30% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....56-66.
24 hr trend......4 degrees warmer.
Max humidity........29-39% near 5000 feet.
23-33% near 8000 feet.
24 hr trend......Unchanged.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest 10-15 mph.
.WEDNESDAY...
Sky/weather.........Sunny (20-30% cloud cover) until 1200, then
partly cloudy (35-45% cloud cover).
Chance lightning....10%.
CWR.................0%.
Max temperature.....91-100 near 5000 feet.
79-89 near 8000 feet.
24 hr trend......1 degree warmer.
Min humidity........11-21%.
24 hr trend......6% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest 10-15 mph.
Mixing height.......15200 ft AGL.
Climatology......95-97th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows around 60. Highs in the lower 90s in the valleys and in the
lower 80s in the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the upper 50s. Highs in the mid 90s in the valleys and in
the lower 80s in the mountains. Winds generally less than 15 mph.
.SATURDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the upper 50s. Highs in the lower 90s in the valleys and
in the upper 70s in the mountains. Winds generally less than
15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 50s. Highs in the upper 80s in the valleys and
in the mid 70s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the mid 50s. Highs in the mid 80s in the valleys and in
the lower 70s in the mountains.
=
$$
UTZ480-191230-
Uinta Mountains-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Partly cloudy (20-30% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....52-59 near 7000 feet.
42-52 near 9000 feet.
24 hr trend......2 degrees warmer.
Max humidity........21-31% near 7000 feet.
28-38% near 9000 feet.
24 hr trend......13% drier near 7000 feet.
19% drier near 9000 feet.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover) until 1200, then
partly sunny (50-60% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....85-91 near 7000 feet.
76-84 near 9000 feet.
24 hr trend......5 degrees warmer.
Min humidity........8-16%.
24 hr trend......3% drier.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......13700 ft AGL.
Climatology......95-97th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Mostly cloudy (45-55% cloud cover) until 2400,
then mostly clear (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....56-62 near 7000 feet.
46-56 near 9000 feet.
24 hr trend......4 degrees warmer.
Max humidity........23-33% near 7000 feet.
28-38% near 9000 feet.
24 hr trend......Unchanged.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable becoming south around 10 mph
after midnight.
.WEDNESDAY...
Sky/weather.........Sunny (10-20% cloud cover) until 1200, then
partly sunny (55-65% cloud cover).
Chance lightning....0% increasing to 10% in the afternoon.
CWR.................0%.
Max temperature.....86-92 near 7000 feet.
76-84 near 9000 feet.
24 hr trend......1 degree warmer.
Min humidity........14-20%.
24 hr trend......5% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......14700 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s in the valleys and in the lower 50s in the
mountains. Highs in the mid 80s in the valleys and in the upper
70s in the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the upper 50s in the valleys and around 50 in the
mountains. Highs in the mid 80s in the valleys and in the upper
70s in the mountains. Winds generally less than 15 mph.
.SATURDAY...Mostly cloudy. Numerous rain showers and scattered
thunderstorms. Lows around 60 in the valleys and in the lower 50s
in the mountains. Highs in the mid 80s in the valleys and in the
mid 70s in the mountains. Winds generally less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 50s in the valleys and in the upper 40s in the
mountains. Highs in the lower 80s in the valleys and in the lower
70s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the mid 50s in the valleys and in the upper 40s in the
mountains. Highs in the upper 70s in the valleys and in the upper
60s in the mountains.
=
$$
UTZ481-191230-
Western Ashley National Forest-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (20-30% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....54-60 near 7000 feet.
43-53 near 10000 feet.
24 hr trend......3 degrees warmer.
Max humidity........18-24% near 7000 feet.
20-30% near 10000 feet.
24 hr trend......19% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover) until 1200, then
partly sunny (50-60% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....84-91 near 7000 feet.
71-79 near 10000 feet.
24 hr trend......4 degrees warmer.
Min humidity........8-18%.
24 hr trend......2% drier.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......12200 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......940.
.TUESDAY NIGHT...
Sky/weather.........Mostly cloudy (50-60% cloud cover) until 2400,
then mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....58-64 near 7000 feet.
46-56 near 10000 feet.
24 hr trend......3 degrees warmer.
Max humidity........20-26% near 7000 feet.
21-31% near 10000 feet.
24 hr trend......1% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable becoming south around 10 mph
after midnight.
.WEDNESDAY...
Sky/weather.........Sunny (10-20% cloud cover) until 1200, then
partly sunny (45-55% cloud cover).
Chance lightning....0% increasing to 10% in the afternoon.
CWR.................0%.
Max temperature.....86-93 near 7000 feet.
72-80 near 10000 feet.
24 hr trend......1 degree warmer.
Min humidity........12-22%.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......13300 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s in the valleys and in the mid 50s in the
mountains. Highs in the mid 80s in the valleys and in the lower
70s in the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows around 60 in the valleys and in the lower 50s in the
mountains. Highs in the mid 80s in the valleys and around 70 in
the mountains. Winds generally less than 15 mph.
.SATURDAY...Numerous rain showers and scattered thunderstorms.
Lows around 60 in the valleys and in the lower 50s in the
mountains. Highs in the lower 80s in the valleys and around 70 in
the mountains. Winds generally less than 15 mph.
.SUNDAY...Numerous thunderstorms and scattered rain showers. Lows
in the upper 50s in the valleys and in the upper 40s in the
mountains. Highs in the upper 70s in the valleys and in the mid
60s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the mid 50s in the valleys and in the upper 40s in the
mountains. Highs in the upper 70s in the valleys and in the mid
60s in the mountains.
=
$$
UTZ482-191230-
Western Uintah Basin-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....53-62 near 6000 feet.
57-63 near 8000 feet.
24 hr trend......2 degrees warmer.
Max humidity........20-28% near 6000 feet.
17-24% near 8000 feet.
24 hr trend......16% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
.TUESDAY...
Sky/weather.........Sunny (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....88-94 near 6000 feet.
80-86 near 8000 feet.
24 hr trend......4 degrees warmer.
Min humidity........8-12%.
24 hr trend......1% drier.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......13500 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......950.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....55-64 near 6000 feet.
59-65 near 8000 feet.
24 hr trend......2 degrees warmer.
Max humidity........20-30%.
24 hr trend......1% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable becoming south around 10 mph
after midnight.
.WEDNESDAY...
Sky/weather.........Sunny (10-20% cloud cover) until 1200, then
partly cloudy (30-40% cloud cover).
Chance lightning....10%.
CWR.................0%.
Max temperature.....90-96 near 6000 feet.
82-88 near 8000 feet.
24 hr trend......2 degrees warmer.
Min humidity........10-14%.
24 hr trend......3% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......15000 ft AGL.
Climatology......97-99th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s. Highs in the lower 90s in the valleys and
in the lower 80s in the mountains. Winds generally less than
15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s. Highs in the upper 80s in the valleys and
in the lower 80s in the mountains. Winds generally less than
15 mph.
.SATURDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s. Highs in the upper 80s in the valleys and
around 80 in the mountains. Winds generally less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 50s. Highs in the mid 80s in the valleys and in
the mid 70s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the mid 50s. Highs in the lower 80s in the valleys and in
the mid 70s in the mountains.
=
$$
UTZ483-191230-
Southern Ashley National Forest-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....54-64.
24 hr trend......4 degrees warmer.
Max humidity........16-25%.
24 hr trend......11% drier.
20-foot winds.......Downslope/downvalley 5-10 mph. Gusts up to 20
mph in the evening.
12K ft MSL winds....Southwest around 10 mph.
.TUESDAY...
Sky/weather.........Sunny (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....85-91 near 7000 feet.
76-82 near 9000 feet.
24 hr trend......4 degrees warmer.
Min humidity........7-14%.
24 hr trend......1% drier.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
Mixing height.......13100 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......960.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....56-66.
24 hr trend......2 degrees warmer.
Max humidity........17-27%.
24 hr trend......Unchanged.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable becoming south around 10 mph
after midnight.
.WEDNESDAY...
Sky/weather.........Sunny (10-20% cloud cover) until 1200, then
partly cloudy (35-45% cloud cover).
Chance lightning....10%.
CWR.................0%.
Max temperature.....88-94 near 7000 feet.
77-83 near 9000 feet.
24 hr trend......1 degree warmer.
Min humidity........10-20%.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......14400 ft AGL.
Climatology......97-99th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s in the valleys and in the lower 60s in the
mountains. Highs in the upper 80s in the valleys and in the upper
70s in the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s. Highs in the upper 80s in the valleys and
in the mid 70s in the mountains. Winds generally less than
15 mph.
.SATURDAY...Numerous rain showers and scattered thunderstorms.
Lows in the mid 60s in the valleys and in the lower 60s in the
mountains. Highs in the mid 80s in the valleys and in the mid 70s
in the mountains. Winds generally less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s in the valleys and in the upper 50s in the
mountains. Highs in the lower 80s in the valleys and in the lower
70s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s in the valleys and in the upper 50s in the
mountains. Highs in the upper 70s in the valleys and in the upper
60s in the mountains.
=
$$
UTZ484-191230-
Tavaputs Plateau-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....59-68 near 6000 feet.
55-65 near 8000 feet.
24 hr trend......4 degrees warmer.
Max humidity........18-28%.
24 hr trend......11% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....West around 10 mph in the evening becoming
light and variable.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....91-97 near 6000 feet.
80-86 near 8000 feet.
24 hr trend......4 degrees warmer.
Min humidity........6-12%.
24 hr trend......2% drier.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Light and variable becoming southwest around 10
mph in the afternoon.
Mixing height.......13200 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......860.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....61-70 near 6000 feet.
57-67 near 8000 feet.
24 hr trend......2 degrees warmer.
Max humidity........14-20% near 6000 feet.
16-24% near 8000 feet.
24 hr trend......1% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable.
.WEDNESDAY...
Sky/weather.........Sunny (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....91-99 near 6000 feet.
81-87 near 8000 feet.
24 hr trend......1 degree warmer.
Min humidity........8-16%.
24 hr trend......3% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
Mixing height.......14100 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s in the valleys and in the lower 60s in the
mountains. Highs in the lower 90s in the valleys and in the lower
80s in the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s in the valleys and in the lower 60s in the
mountains. Highs in the lower 90s in the valleys and in the lower
80s in the mountains. Winds generally less than 15 mph.
.SATURDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s in the valleys and in the lower 60s in the
mountains. Highs around 90 in the valleys and around 80 in the
mountains. Winds generally less than 15 mph.
.SUNDAY...Numerous rain showers and scattered thunderstorms. Lows
in the mid 60s in the valleys and in the upper 50s in the
mountains. Highs in the mid 80s in the valleys and in the mid 70s
in the mountains.
.MONDAY...Numerous rain showers and scattered thunderstorms. Lows
in the lower 60s in the valleys and in the upper 50s in the
mountains. Highs in the mid 80s in the valleys and in the mid 70s
in the mountains.
=
$$
UTZ488-191230-
Manti National Forest-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....55-65 near 6500 feet.
49-59 near 8500 feet.
24 hr trend......4 degrees warmer.
Max humidity........17-26% near 6500 feet.
22-32% near 8500 feet.
24 hr trend......10% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover) until 1200, then
partly cloudy (25-35% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....85-95 near 6500 feet.
75-85 near 8500 feet.
24 hr trend......4 degrees warmer.
Min humidity........8-16%.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
Mixing height.......12800 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......980.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (15-25% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....57-67 near 6500 feet.
52-62 near 8500 feet.
24 hr trend......3 degrees warmer.
Max humidity........19-28% near 6500 feet.
23-33% near 8500 feet.
24 hr trend......2% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable becoming southwest around 10
mph after midnight.
.WEDNESDAY...
Sky/weather.........Sunny (15-25% cloud cover) until 1200, then
partly cloudy (35-45% cloud cover). Isolated
showers and thunderstorms after 1200.
Chance lightning....0% increasing to 20% in the afternoon.
CWR.................0%.
Max temperature.....85-95 near 6500 feet.
76-86 near 8500 feet.
24 hr trend......Unchanged.
Min humidity........11-21%.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
Mixing height.......13400 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the mid 60s in the valleys and in the upper 50s in the
mountains. Highs in the upper 80s in the valleys and in the upper
70s in the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the mid 60s in the valleys and in the upper 50s in the
mountains. Highs in the upper 80s in the valleys and in the upper
70s in the mountains. Winds generally less than 15 mph.
.SATURDAY...Numerous rain showers and scattered thunderstorms.
Lows in the lower 60s in the valleys and in the upper 50s in the
mountains. Highs in the mid 80s in the valleys and in the mid 70s
in the mountains. Winds generally less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows around 60 in the valleys and in the mid 50s in the
mountains. Highs in the lower 80s in the valleys and in the lower
70s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 50s in the valleys and in the lower 50s in the
mountains. Highs in the lower 80s in the valleys and around 70 in
the mountains.
=
$$
UTZ489-191230-
San Rafael Swell-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....58-68.
24 hr trend......3 degrees warmer.
Max humidity........16-25% near 5000 feet.
15-21% near 7000 feet.
24 hr trend......8% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph in the evening becoming
light and variable.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....95-101 near 5000 feet.
85-91 near 7000 feet.
24 hr trend......3 degrees warmer.
Min humidity........5-11%.
24 hr trend......2% drier.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 10 mph in the morning becoming
light and variable.
Mixing height.......13100 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......850.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....60-70.
24 hr trend......2 degrees warmer.
Max humidity........16-26%.
24 hr trend......Unchanged.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable.
.WEDNESDAY...
Sky/weather.........Sunny (10-20% cloud cover) until 1200, then
partly cloudy (25-35% cloud cover). Isolated
showers and thunderstorms after 1200.
Chance lightning....0% increasing to 10% in the afternoon.
CWR.................0%.
Max temperature.....96-102 near 5000 feet.
86-92 near 7000 feet.
24 hr trend......1 degree warmer.
Min humidity........8-14%.
24 hr trend......3% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
Mixing height.......13000 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Mostly clear. Scattered showers and thunderstorms.
Lows in the upper 60s. Highs in the upper 90s in the valleys and
in the upper 80s in the mountains. Winds generally less than
15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s. Highs in the upper 90s in the valleys and
in the upper 80s in the mountains. Winds generally less than
15 mph.
.SATURDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s. Highs in the mid 90s in the valleys and in
the mid 80s in the mountains. Winds generally less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the mid 60s. Highs in the lower 90s in the valleys and in
the lower 80s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the mid 60s. Highs around 90 in the valleys and in the
upper 70s in the mountains.
=
$$
UTZ492-191230-
Central Utah West Desert-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....54-64.
24 hr trend......1 degree warmer.
Max humidity........21-31%.
24 hr trend......7% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 15 mph.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover) until 1200, then
partly cloudy (25-35% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....94-100 near 5000 feet.
79-85 near 8000 feet.
24 hr trend......4 degrees warmer.
Min humidity........7-11%.
24 hr trend......2% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 15 mph.
Mixing height.......14500 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (30-40% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....60-70 near 5000 feet.
56-66 near 8000 feet.
24 hr trend......6 degrees warmer.
Max humidity........28-38%.
24 hr trend......9% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
.WEDNESDAY...
Sky/weather.........Partly cloudy (40-50% cloud cover). Isolated
showers and thunderstorms after 1200.
Chance lightning....0% increasing to 10% in the afternoon.
CWR.................0%.
Max temperature.....95-101 near 5000 feet.
80-86 near 8000 feet.
24 hr trend......1 degree warmer.
Min humidity........10-16% near 5000 feet.
14-20% near 8000 feet.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 15 mph.
Mixing height.......14500 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered rain showers and isolated
thunderstorms. Lows in the upper 60s in the valleys and in the
lower 60s in the mountains. Highs in the mid 90s in the valleys
and in the lower 80s in the mountains. Winds generally less than
15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s in the valleys and in the lower 60s in the
mountains. Highs in the mid 90s in the valleys and in the lower
80s in the mountains. Winds generally less than 15 mph.
.SATURDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s in the valleys and in the lower 60s in the
mountains. Highs in the mid 90s in the valleys and around 80 in
the mountains. Winds generally less than 15 mph.
.SUNDAY...Numerous rain showers and scattered thunderstorms. Lows
in the mid 60s in the valleys and around 60 in the mountains.
Highs in the lower 90s in the valleys and in the mid 70s in the
mountains.
.MONDAY...Numerous rain showers and scattered thunderstorms. Lows
in the mid 60s in the valleys and in the upper 50s in the
mountains. Highs in the upper 80s in the valleys and in the mid
70s in the mountains.
=
$$
UTZ493-191230-
Central Utah Mountains-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (10-20% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....50-60.
24 hr trend......4 degrees warmer.
Max humidity........24-34%.
24 hr trend......10% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph in the evening becoming
light and variable.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover) until 1200, then
partly sunny (55-65% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....92-98 near 5000 feet.
80-87 near 8000 feet.
24 hr trend......3 degrees warmer.
Min humidity........8-16%.
24 hr trend......1% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
Mixing height.......14500 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Mostly cloudy (60-70% cloud cover) until 2400,
then mostly clear (15-25% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....53-63.
24 hr trend......4 degrees warmer.
Max humidity........32-39% near 5000 feet.
28-38% near 8000 feet.
24 hr trend......6% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable.
.WEDNESDAY...
Sky/weather.........Sunny (20-30% cloud cover) until 1200, then
partly sunny (65-75% cloud cover). Scattered
rain showers and isolated thunderstorms after
1200.
Chance lightning....0% increasing to 20% in the afternoon.
CWR.................10%.
Max temperature.....93-99 near 5000 feet.
81-87 near 8000 feet.
24 hr trend......Unchanged.
Min humidity........13-23%.
24 hr trend......5% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
Mixing height.......14000 ft AGL.
Climatology......95-97th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Numerous rain showers and scattered
thunderstorms. Lows around 60. Highs in the mid 90s in the
valleys and in the lower 80s in the mountains. Winds generally
less than 15 mph.
.FRIDAY...Numerous rain showers and scattered thunderstorms. Lows
around 60. Highs in the mid 90s in the valleys and in the lower
80s in the mountains. Winds generally less than 15 mph.
.SATURDAY...Rain showers and scattered thunderstorms. Lows in the
upper 50s. Highs in the lower 90s in the valleys and in the lower
80s in the mountains. Winds generally less than 15 mph.
.SUNDAY...Rain showers and scattered thunderstorms. Lows in the
upper 50s. Highs in the upper 80s in the valleys and in the upper
70s in the mountains.
.MONDAY...Rain showers and scattered thunderstorms. Lows in the
mid 50s. Highs in the mid 80s in the valleys and in the mid 70s
in the mountains.
=
$$
UTZ494-191230-
Henry Mountains-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....60-70 near 5000 feet.
59-66 near 8000 feet.
24 hr trend......3 degrees warmer.
Max humidity........14-24% near 5000 feet.
13-19% near 8000 feet.
24 hr trend......5% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....94-100 near 5000 feet.
79-89 near 8000 feet.
24 hr trend......3 degrees warmer.
Min humidity........5-11%.
24 hr trend......1% drier.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Light and variable.
Mixing height.......13600 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......840.
.TUESDAY NIGHT...
Sky/weather.........Mostly clear (15-25% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....63-73 near 5000 feet.
62-68 near 8000 feet.
24 hr trend......3 degrees warmer.
Max humidity........17-27%.
24 hr trend......2% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable.
.WEDNESDAY...
Sky/weather.........Sunny (20-30% cloud cover) until 1200, then
partly cloudy (25-35% cloud cover). Isolated
showers and thunderstorms after 1200.
Chance lightning....0% increasing to 20% in the afternoon.
CWR.................0%.
Max temperature.....95-101 near 5000 feet.
80-90 near 8000 feet.
24 hr trend......1 degree warmer.
Min humidity........9-13% near 5000 feet.
15-19% near 8000 feet.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Light and variable becoming south around 10 mph
in the afternoon.
Mixing height.......12800 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Mostly clear. Scattered rain showers and isolated
thunderstorms. Lows in the lower 70s in the valleys and in the
upper 60s in the mountains. Highs in the upper 90s in the valleys
and in the mid 80s in the mountains. Winds generally less than
15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the lower 70s in the valleys and in the upper 60s in the
mountains. Highs in the upper 90s in the valleys and in the lower
80s in the mountains. Winds generally less than 15 mph.
.SATURDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the lower 70s in the valleys and in the mid 60s in the
mountains. Highs in the mid 90s in the valleys and around 80 in
the mountains. Winds generally less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s in the valleys and in the mid 60s in the
mountains. Highs in the lower 90s in the valleys and in the mid
70s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the upper 60s in the valleys and in the lower 60s in the
mountains. Highs around 90 in the valleys and in the mid 70s in
the mountains.
=
$$
UTZ495-191230-
Color Country West Desert-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (0-10% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....52-62.
24 hr trend......3 degrees warmer.
Max humidity........20-30% near 5000 feet.
14-24% near 7000 feet.
24 hr trend......12% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....South 10-15 mph.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover) until 1200, then
partly cloudy (30-40% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....94-100 near 5000 feet.
86-92 near 7000 feet.
24 hr trend......5 degrees warmer.
Min humidity........8-16%.
24 hr trend......3% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 15 mph.
Mixing height.......14000 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (25-35% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....56-66.
24 hr trend......5 degrees warmer.
Max humidity........33-43% near 5000 feet.
26-36% near 7000 feet.
24 hr trend......14% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....South 10-15 mph.
.WEDNESDAY...
Sky/weather.........Partly cloudy (35-45% cloud cover). Isolated
showers and thunderstorms after 1200.
Chance lightning....0% increasing to 20% in the afternoon.
CWR.................0%.
Max temperature.....94-100 near 5000 feet.
86-92 near 7000 feet.
24 hr trend......1 degree warmer.
Min humidity........12-20%.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 15 mph.
Mixing height.......13700 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows around 60 in the valleys and in the upper 60s in the
mountains. Highs in the upper 90s in the valleys and in the upper
80s in the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows around 60 in the valleys and in the mid 60s in the
mountains. Highs in the upper 90s in the valleys and in the upper
80s in the mountains. Winds generally less than 15 mph.
.SATURDAY...Numerous rain showers and scattered thunderstorms.
Lows in the lower 60s in the valleys and in the mid 60s in the
mountains. Highs in the mid 90s in the valleys and in the mid 80s
in the mountains. Winds generally less than 15 mph.
.SUNDAY...Numerous rain showers and scattered thunderstorms. Lows
around 60 in the valleys and in the mid 60s in the mountains.
Highs in the lower 90s in the valleys and in the lower 80s in the
mountains.
.MONDAY...Numerous rain showers and scattered thunderstorms. Lows
in the upper 50s in the valleys and in the lower 60s in the
mountains. Highs in the upper 80s in the valleys and around 80 in
the mountains.
=
$$
UTZ496-191230-
Color Country Mountains-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....51-61.
24 hr trend......4 degrees warmer.
Max humidity........26-36% near 6000 feet.
19-29% near 8000 feet.
24 hr trend......12% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
.TUESDAY...
Sky/weather.........Sunny (5-15% cloud cover) until 1200, then
partly sunny (45-55% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....88-95 near 6000 feet.
79-87 near 8000 feet.
24 hr trend......4 degrees warmer.
Min humidity........8-16%.
24 hr trend......1% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 10 mph.
Mixing height.......13600 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (25-35% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....55-65.
24 hr trend......4 degrees warmer.
Max humidity........37-47% near 6000 feet.
28-38% near 8000 feet.
24 hr trend......10% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southeast around 10 mph.
.WEDNESDAY...
Sky/weather.........Partly cloudy (25-35% cloud cover) until 1200,
then partly sunny (55-65% cloud cover).
Scattered rain showers and isolated
thunderstorms after 1200.
Chance lightning....0% increasing to 20% in the afternoon.
CWR.................10%.
Max temperature.....89-96 near 6000 feet.
79-87 near 8000 feet.
24 hr trend......Unchanged.
Min humidity........13-23%.
24 hr trend......5% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South 10-15 mph.
Mixing height.......13100 ft AGL.
Climatology......90-95th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Partly cloudy. Numerous rain showers and scattered
thunderstorms. Lows in the mid 60s in the valleys and in the
upper 50s in the mountains. Highs in the lower 90s in the valleys
and in the mid 80s in the mountains. Winds generally less than
15 mph.
.FRIDAY...Numerous rain showers and scattered thunderstorms. Lows
in the mid 60s in the valleys and around 60 in the mountains.
Highs in the lower 90s in the valleys and in the mid 80s in the
mountains. Winds generally less than 15 mph.
.SATURDAY...Numerous rain showers and scattered thunderstorms.
Lows in the mid 60s in the valleys and in the upper 50s in the
mountains. Highs around 90 in the valleys and in the lower 80s in
the mountains. Winds generally less than 15 mph.
.SUNDAY...Rain showers and scattered thunderstorms. Lows in the
lower 60s in the valleys and in the upper 50s in the mountains.
Highs in the upper 80s in the valleys and in the upper 70s in the
mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the lower 60s in the valleys and in the mid 50s in the
mountains. Highs in the mid 80s in the valleys and in the mid 70s
in the mountains.
=
$$
UTZ497-191230-
Mojave Desert-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Clear (0-10% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....71-81 near 3000 feet.
62-72 near 6000 feet.
24 hr trend......3 degrees warmer.
Max humidity........14-24%.
24 hr trend......7% drier.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....South around 15 mph.
.TUESDAY...
Sky/weather.........Sunny (10-20% cloud cover) until 1200, then
partly cloudy (25-35% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....99-106 near 3000 feet.
85-93 near 6000 feet.
24 hr trend......5 degrees warmer.
Min humidity........8-12%.
24 hr trend......1% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South around 15 mph.
Mixing height.......11500 ft AGL.
Climatology......60-70th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (30-40% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....76-86 near 3000 feet.
67-77 near 6000 feet.
24 hr trend......5 degrees warmer.
Max humidity........24-34%.
24 hr trend......10% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southeast around 15 mph.
.WEDNESDAY...
Sky/weather.........Partly cloudy (25-35% cloud cover) until 1200,
then sunny (15-25% cloud cover).
Chance lightning....10%.
CWR.................0%.
Max temperature.....100-107 near 3000 feet.
86-94 near 6000 feet.
24 hr trend......1 degree warmer.
Min humidity........12-18%.
24 hr trend......5% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....South 10-15 mph.
Mixing height.......11700 ft AGL.
Climatology......50-60th Percentile.
Clearing Index......940.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Mostly clear. Isolated showers and thunderstorms.
Lows in the lower 80s in the valleys and in the lower 70s in the
mountains. Highs around 106 in the valleys and in the lower 90s
in the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the lower 80s in the valleys and in the mid 70s in the
mountains. Highs around 106 in the valleys and in the lower 90s
in the mountains. Winds generally less than 15 mph.
.SATURDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the lower 80s in the valleys and in the mid 70s in the
mountains. Highs around 103 in the valleys and around 90 in the
mountains. Winds generally less than 15 mph.
.SUNDAY...Numerous rain showers and scattered thunderstorms. Lows
around 80 in the valleys and in the lower 70s in the mountains.
Highs around 101 in the valleys and in the upper 80s in the
mountains.
.MONDAY...Numerous rain showers and scattered thunderstorms. Lows
in the upper 70s in the valleys and in the lower 70s in the
mountains. Highs in the upper 90s in the valleys and in the mid
80s in the mountains.
=
$$
UTZ498-191230-
Grand Staircase-
200 PM MDT Mon Aug 18 2025
.TONIGHT...
Sky/weather.........Mostly clear (5-15% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....63-72 near 4000 feet.
56-66 near 6000 feet.
24 hr trend......3 degrees warmer.
Max humidity........18-28%.
24 hr trend......5% drier near 4000 feet.
11% drier near 6000 feet.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Southwest around 10 mph becoming south after
midnight.
.TUESDAY...
Sky/weather.........Sunny (15-25% cloud cover).
Chance lightning....0%.
CWR.................0%.
Max temperature.....94-104 near 4000 feet.
89-98 near 6000 feet.
24 hr trend......4 degrees warmer.
Min humidity........6-12%.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southeast around 10 mph.
Mixing height.......13500 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (25-35% cloud cover).
Chance lightning....0%.
CWR.................0%.
Min temperature.....66-76 near 4000 feet.
60-70 near 6000 feet.
24 hr trend......3 degrees warmer.
Max humidity........19-29% near 4000 feet.
25-35% near 6000 feet.
24 hr trend......7% wetter.
20-foot winds.......Downslope/downvalley 5-10 mph.
12K ft MSL winds....Light and variable becoming southeast around 10
mph after midnight.
.WEDNESDAY...
Sky/weather.........Partly cloudy (25-35% cloud cover). Isolated
showers and thunderstorms after 1200.
Chance lightning....0% increasing to 20% in the afternoon.
CWR.................0%.
Max temperature.....95-105 near 4000 feet.
90-98 near 6000 feet.
24 hr trend......1 degree warmer.
Min humidity........10-16%.
24 hr trend......4% wetter.
20-foot winds.......Upslope/upvalley 5-10 mph.
12K ft MSL winds....Southeast around 10 mph.
Mixing height.......12700 ft AGL.
Climatology......80-90th Percentile.
Clearing Index......1000+.
.FORECAST DAYS 3 THROUGH 7...
.THURSDAY...Mostly clear. Scattered showers and thunderstorms.
Lows in the mid 70s in the valleys and in the mid 60s in the
mountains. Highs around 103 in the valleys and in the mid 90s in
the mountains. Winds generally less than 15 mph.
.FRIDAY...Partly cloudy. Scattered showers and thunderstorms.
Lows in the mid 70s in the valleys and in the upper 60s in the
mountains. Highs around 103 in the valleys and in the mid 90s in
the mountains. Winds generally less than 15 mph.
.SATURDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the mid 70s in the valleys and in the mid 60s in the
mountains. Highs around 100 in the valleys and in the lower 90s
in the mountains. Winds generally less than 15 mph.
.SUNDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the lower 70s in the valleys and in the mid 60s in the
mountains. Highs in the upper 90s in the valleys and in the upper
80s in the mountains.
.MONDAY...Mostly cloudy. Scattered showers and thunderstorms.
Lows in the lower 70s in the valleys and in the lower 60s in the
mountains. Highs in the mid 90s in the valleys and in the upper
80s in the mountains.
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.8-14 day outlook for Tuesday August 26 to Monday September 01
Temperature... Near Normal
Precipitation... Above Normal
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