436
FNUS75 KBYZ 270428
FWSBYZ

Spot Forecast for Horse Creek...MT DNRC
National Weather Service Billings MT
1028 PM MDT Sun Jul 26 2026

Forecast is based on forecast start time of 2300 MDT on July 26.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions
or concerns with this forecast.

...HEAT ADVISORY IN EFFECT UNTIL MIDNIGHT MDT MONDAY NIGHT...

.DISCUSSION...

Showers and a few rumbles of thunder are in the vicinity of the
site this evening. The primary impacts will be lightning, erratic
wind gusts to 40 mph (gusts to 50 mph cannot be ruled out). Look
for this activity to continue through midnight tonight. Overnight
relative humidity recoveries will be poor, in the 40s percent.
Monday will be hot and dry, though smoke moving into the region
may keep high temperatures a bit lower and minimum relative
humidities a bit higher. There is a low chance for late afternoon
showers and thunderstorms on Monday, with the main impacts being
the same as this evening. Matos

.REST OF TONIGHT...

Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
late in the evening. Slight chance of showers
through the night. Erratic wind gusts expected
near thunderstorms.
CWR.................5 percent.
Chance of lightning.15 percent.
Min temperature.....69-73.
Max humidity........41-45 percent.
Wind (20 ft)........
 Slope/valley.......Southeast winds 5 to 10 mph. Gusty and erratic
                    winds expected near thunderstorms late in the
                    evening.
 Ridgetop...........Southeast around 10 mph.
Mixing height.......500 ft AGL.
Transport winds.....Southeast around 12 mph.

.MONDAY...

Sky/weather.........Mostly sunny. Patchy smoke.
CWR.................0 percent.
Chance of lightning.2 percent.
Max temperature.....89-93.
Min humidity........18-22 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 7 to 12 mph.
 Ridgetop...........Northwest around 10 mph.
Mixing height.......Increasing to 5300 ft AGL in the afternoon.
Transport winds.....West around 12 mph.

.MONDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
Patchy smoke overnight. Slight chance of
showers overnight.
CWR.................5 percent.
Chance of lightning.10 percent.
Min temperature.....66-70.
Max humidity........40-45 percent.
Wind (20 ft)........
 Slope/valley.......Becoming southeast up to 5 mph overnight.
 Ridgetop...........Southeast up to 10 mph.
Mixing height.......Decreasing to 400 ft AGL overnight.
Transport winds.....East around 11 mph.

.TUESDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.6 percent.
Max temperature.....95-99.
Min humidity........16-20 percent.
Wind (20 ft)........
 Slope/valley.......Southeast winds 4 to 8 mph.
 Ridgetop...........Southeast around 10 mph.
Mixing height.......Increasing to 12700 ft AGL in the afternoon.
Transport winds.....South around 11 mph.

$$
Forecaster...Matos
Requested by...Incident Commander
Type of request...WILDFIRE
.TAG 2618353.0/BYZ
.DELDT 07/26/26
.FormatterVersion 2.0.0
.EMAIL mtbdc@firenet.gov