339
FNUS75 KBYZ 192257
FWSBYZ

Spot Forecast for Windmill Fire...County DES
National Weather Service Billings MT
457 PM MDT Wed Aug 19 2026

Forecast is based on forecast start time of 1700 MDT on August 19.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

Sunny and hot the rest of this afternoon with occasional wind
gusts up to 25 mph. Winds will die down by 9pm with light winds
expected overngiht. RH recoveries should reach the 50% range
tonight. Thursday will be similar to today with highs in the 90s,
RH values in the low teens, and occasional wind gusts to 20 mph.
Chambers


.REST OF TODAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....87-91.
Min humidity........11-17 percent.
Wind (20 ft)........
 Slope/valley.......West winds 8 to 15 mph with gusts to
                    around 25 mph.
 Ridgetop...........West around 14 mph.
Mixing height.......9100 ft AGL.
Transport winds.....West around 24 mph.

.TONIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....55-60.
Max humidity........51-55 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 6 to 12 mph with gusts to
                    around 20 mph until 9pm in the evening, then
                    becoming light and variable 2 to 5 mph.
 Ridgetop...........Northwest around 12 mph, becoming light and
                    variable by 11 pm.
Mixing height.......400 ft AGL overnight.
Transport winds.....Northwest around 10 mph.

.THURSDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....90-95.
Min humidity........10-16 percent.
Wind (20 ft)........
 Slope/valley.......Light and variable winds 3 to 6 mph becoming
                    west 8 to 14 mph with gusts up to 20 mph in
                    the afternoon.
 Ridgetop...........West around 13 mph.
Mixing height.......11600 ft AGL in the afternoon.
Transport winds.....West around 20 mph.

$$
Forecaster...Chambers
Requested by...David Stamey
Type of request...WILDFIRE
.TAG 2620038.0/BYZ
.DELDT 08/19/26
.FormatterVersion 2.0.0
.EMAIL mtbdc@firenet.gov,dstamey@stillwatercountymt.gov