508
FNUS75 KBYZ 171433
FWSBYZ

Spot Forecast for Interior Smoke Highline Rx...BLM
National Weather Service Billings MT
833 AM MDT Sun May 17 2026

Forecast is based on forecast start time of 0900 MDT on May 17.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

There is a 15% chance of light showers through noon today. Then,
rain and snow showers move in overnight, with a 30% chance by
0200 MDT Monday, increasing to a 70% chance by 1000 MDT Monday.
Any showers will be light and less than 1 inch of snow is expected.
Winds will remain out of the northwest through Monday with gusts
around 20 to 30 mph. There is a 15% chance for a gust as high as
40 mph through this evening. Winds turn mostly light Tuesday.

.TODAY...

Sky/weather.........Mostly cloudy becoming partly sunny this
afternoon. Slight chance of showers before
noon.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....52-56.
Min humidity........32-36 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 15 to 20 mph with gusts up
to 30 mph.
 Ridgetop...........Northwest 20 to 30 mph.
Mixing height.......Increasing to 7200 ft AGL in the afternoon.
Transport winds.....Northwest 20 to 30 mph.

.TONIGHT...

Sky/weather.........Mostly cloudy becoming cloudy overnight.
Chance of rain and snow showers overnight.
CWR.................10 percent.
Chance of lightning.0 percent.
Min temperature.....31-35.
Max humidity........87-91 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 12 to 18 mph with gusts up
                    to 30 mph.
 Ridgetop...........Northwest 20 to 30 mph.
Mixing height.......Decreasing to 1600 ft AGL overnight.
Transport winds.....Northwest 20 to 30 mph.

.MONDAY...

Sky/weather.........Cloudy. Rain showers and snow showers
                    likely.
CWR.................15 percent.
Chance of lightning.Less than 5 percent.
Max temperature.....39-43.
Min humidity........55-59 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 10 to 15 mph with gusts up
                    to 25 mph.
 Ridgetop...........Northwest 15 to 25 mph.
Mixing height.......Increasing to 6100 ft AGL in the afternoon.
Transport winds.....Northwest 15 to 25 mph.

$$
Forecaster...Archer
Requested by...Donovan Birch
Type of request...WILDFIRE
.TAG 2613847.1/BYZ
.DELDT 05/17/26
.FormatterVersion 2.0.0
.EMAIL mtmcc@firenet.gov