FNUS75 KBYZ 222258
FWSBYZ

Spot Forecast for Lookout...MT-BDC
National Weather Service Billings MT
458 PM MDT Sat Aug 22 2026

Forecast is based on forecast start time of 1800 MDT on August 22. 
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

Another area of showers and isolated thunderstorms will move 
through the area this evening (arriving around 7pm), and may 
persist until around 3am. Expect wind gusts up to 40 mph with any 
storms. RH recoveries will be near 60% tonight if no precipitation
impacts the fire, higher if it does. Tomorrow will be similar to 
today with scattered afternoon and evening showers and 
thunderstorms in the area. Wind gusts up to 60 mph will be the 
main threat with storms tomorrow. RH values will be lower tomorrow
afternoon in the lower 20s. Showers/thunderstorms will end in the
evening and RH recoveries are expected to be near 60% again with 
winds becoming light overnight Sunday night. Monday will be dry 
with MinRH values in the low/mid 20s and generally light winds. 
Chambers 


.TONIGHT...

Sky/weather.........Mostly cloudy. Chance of showers and 
                    thunderstorms through 0300 MDT. 
CWR.................20 percent. 
Chance of lightning.25 percent. 
Min temperature.....62-67. 
Max humidity........57-62 percent. 
Wind (20 ft)........ 
 Slope/valley.......South winds 8 to 14 mph. Gusts to 20 mph in 
                    the evening, becoming southwest to west 5 to 10
                    mph after 2400 MDT. Gusty and erratic winds expected 
                    near thunderstorms. 
 Ridgetop...........South 10 to 20 mph in the evening, becoming
                    southwest 6 to 12 mph after 2400 MDT. 
Mixing height.......Decreasing to 500 ft AGL overnight. 
Transport winds.....South to southwest around 15 mph. 

.SUNDAY...

Sky/weather.........Mostly sunny. Increasing clouds in the
                    afternoon. Slight chance of showers and 
                    thunderstorms in the afternoon. 
CWR.................10 percent. 
Chance of lightning.20 percent. 
Max temperature.....85-90. 
Min humidity........20-25 percent. 
Wind (20 ft)........ 
 Slope/valley.......Becoming northwest 7 to 14 mph. Gusts up to 20 mph 
                    in the afternoon. Gusty and erratic winds 
                    expected near thunderstorms. 
 Ridgetop...........Becoming northwest 10 to 20 mph. 
Mixing height.......Increasing to 7800 ft AGL in the afternoon. 
Transport winds.....Northwest around 20 mph. 

.SUNDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy. 
                    Chance of showers and slight chance of 
                    thunderstorms in the evening. 
CWR.................15 percent. 
Chance of lightning.20 percent. 
Min temperature.....60-66. 
Max humidity........59-64 percent. 
Wind (20 ft)........ 
 Slope/valley.......Northwest winds 8 to 16 mph in the evening becoming 
                    southeast 4 to 8 mph overnight. Gusty and erratic
                    winds expected near thunderstorms in the evening. 
 Ridgetop...........Northwest around 10 mph in the evening becoming
                    southeast around 7 mph overnight 
Mixing height.......400 ft AGL overnight. 
Transport winds.....Northwest around 12 mph. 

.MONDAY...

Sky/weather.........Sunny. 
CWR.................0 percent. 
Chance of lightning.0 percent. 
Max temperature.....79-85. 
Min humidity........22-27 percent. 
Wind (20 ft)........ 
 Slope/valley.......North winds 5 to 10 mph. 
 Ridgetop...........North around 7 mph. 
Mixing height.......6300 ft AGL in the afternoon. 
Transport winds.....Northwest around 11 mph. 

$$
Forecaster...Chambers
Requested by...IC for Lookout
Type of request...WILDFIRE
.TAG 2620202.3/BYZ
.DELDT 08/22/26
.FormatterVersion 2.0.0
.EMAIL mtbdc@firenet.gov