517
FNUS75 KBYZ 102245 AAD
FWSBYZ

Spot Forecast for Speelmon...UPDATED
National Weather Service Billings MT
445 PM MDT Wed Jun 10 2026

Forecast is based on forecast start time of 1700 MDT on June 10.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

Breezy conditions will continue over the site through Thursday.
Look for winds to increase out of the northwest overnight, with
gusts into the 30s to 40 mph through the morning hours, before
decreasing through the afternoon. The chance for precipitation
will increase tonight, with the best chance through mid Thursday
morning. The chance of a wetting rain is low through the period.
While the chance for a thunderstorm overnight is low (generally
less than 10 percent), a rumble or two of thunder cannot be ruled
out. The primary concerns with any showers will be erratic wind
gusts and brief heavy rain. Look for excellent relative humidity
recoveries tonight and minimum RH values in the 40s to 50 percent
on Thursday. Matos

.REST OF TODAY...

Sky/weather.........Partly sunny.
CWR.................0 percent.
Chance of lightning.5 percent.
Max temperature.....65-69.
Min humidity........20-25 percent.
Wind (20 ft)........
 Slope/valley.......West winds 13 to 18 mph with gusts to around 30
                    mph.
 Ridgetop...........West 15 to 20 mph.
Mixing height.......9000 ft AGL.
Transport winds.....West around 26 mph.

.TONIGHT...

Sky/weather.........Mostly cloudy. Slight chance of rain showers in
                    the evening, then chance of rain showers
                    overnight.
CWR.................11 percent.
Chance of lightning.7 percent.
Min temperature.....43-47.
Max humidity........90-95 percent.
Wind (20 ft)........
 Slope/valley.......West winds 12 to 24 mph with gusts to around 35
                    mph.
 Ridgetop...........West 20 to 25 mph.
Mixing height.......Decreasing to 600 ft AGL overnight.
Transport winds.....West around 24 mph.

.THURSDAY...

Sky/weather.........Cloudy then becoming mostly sunny. Rain showers
                    in the morning, then slight chance of showers
                    and thunderstorms in the afternoon.
CWR.................Less than 10 percent.
Chance of lightning.15 percent.
Max temperature.....63-67.
Min humidity........45-50 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 15 to 25 mph with gusts up to
                    40 mph in the morning. Erratic wind gusts expected
near thunderstorms in the afternoon.
 Ridgetop...........Northwest 20 to 25 mph.
Mixing height.......Increasing to 6100 ft AGL in the afternoon.
Transport winds.....Northwest around 29 mph.

$$
Forecaster...Matos
Requested by...Jonathan Mantello
Type of request...WILDFIRE
.TAG 2615329.0/BYZ
.DELDT 06/10/26
.FormatterVersion 2.0.0
.EMAIL mtmcc@firenet.gov