687
FNUS75 KBYZ 190156
FWSBYZ

Spot Forecast for Box Car...BLM
National Weather Service Billings MT
756 PM MDT Sat Jul 18 2026

Forecast is based on forecast start time of 2000 MDT on July 18.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

The next two hours have the potential to bring showers and
thunderstorms with the main threats being strong winds and heavy
rain. Sunday will bring similar chances for showers and
thunderstorms in the 6 PM-12 AM timeframe. A cold frontal passage
is expected Monday that will bring northerly winds and cooler
temperatures. The cold front could bring wind gusts up to 30 mph.
Torgerson


.REST OF TONIGHT...

Sky/weather.........Partly cloudy. Slight chance of showers and
                    thunderstorms early in the evening.
CWR.................5 percent.
Chance of lightning.19 percent.
Min temperature.....67-71.
Max humidity........63-67 percent.
Wind (20 ft)........
 Slope/valley.......South winds up to 6 mph. Gusty and erratic
                    winds expected near thunderstorms early in the
                    evening.
 Ridgetop...........Southwest becoming northwest around 10 mph.
Mixing height.......Decreasing to 500 ft AGL overnight.
Transport winds.....Southwest becoming northwest around 10 mph.

.SUNDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.13 percent.
Max temperature.....96-100.
Min humidity........18-22 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 6 to 10 mph with winds gusting
to 15 mph in the afternoon.
 Ridgetop...........Northwest around 15 mph.
Mixing height.......Increasing to 9700 ft AGL in the afternoon.
Transport winds.....Northwest around 10 mph.

.SUNDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Slight chance of showers and thunderstorms in
                    the evening.
CWR.................5 percent.
Chance of lightning.19 percent.
Min temperature.....66-70.
Max humidity........49-53 percent.
Wind (20 ft)........
 Slope/valley.......Light winds. Gusty and erratic winds
                    expected near thunderstorms in the evening.
 Ridgetop...........North around 8 mph.
Mixing height.......Decreasing to 400 ft AGL overnight.
Transport winds.....North around 10 mph.

.MONDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....88-92.
Min humidity........17-21 percent.
Wind (20 ft)........
 Slope/valley.......North winds 12 to 16 mph with gusts to 25 mph in
the afternoon.
 Ridgetop...........Northeast around 25 mph.
Mixing height.......Increasing to 7500 ft AGL in the afternoon.
Transport winds.....Northeast around 25 mph.

$$
Forecaster...Torgerson
Requested by...Michael Cobarrubias
Type of request...WILDFIRE
.TAG 2617715.0/BYZ
.DELDT 07/18/26
.FormatterVersion 2.0.0
.EMAIL colin.sturgill@mt.gov,mtmcc@firenet.gov