Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

CW8386 Thermopolis (C8386)

Lat: 43.64283°NLon: 108.227°WElev: 4419.52ft.

NA

40°F

4°C

Humidity	69%
Wind Speed	N 0 MPH
Barometer	29.9 in (1012.53 mb)
Dewpoint	31°F (-1°C)
Visibility	NA
Last update	17 Mar 08:55 AM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles S East Thermopolis WY

Fire Weather Watch March 18, 12:00pm until March 21, 09:00pm

Click here for hazard details and duration

Fire Weather Watch

Today
High: 72 °F
Mostly Sunny
Tonight
Low: 39 °F
Partly Cloudy
Wednesday
High: 78 °F
Mostly Sunny
then Sunny
and Breezy
Wednesday Night
Low: 41 °F
Partly Cloudy
Thursday
High: 80 °F
Sunny
Thursday Night
Low: 45 °F
Partly Cloudy
Friday
High: 81 °F
Partly Sunny
then Mostly
Sunny and
Breezy
Friday Night
Low: 46 °F
Partly Cloudy
and Breezy
then Mostly
Cloudy
Saturday
High: 81 °F
Mostly Sunny
then Mostly
Sunny and
Breezy

Detailed Forecast

Today

Mostly sunny, with a high near 72. Light and variable wind becoming northwest 5 to 8 mph in the morning.

Tonight

Partly cloudy, with a low around 39. North northwest wind 5 to 8 mph becoming light and variable.

Wednesday

Mostly sunny, with a high near 78. Breezy, with a south wind 7 to 17 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

Wednesday Night

Partly cloudy, with a low around 41. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.

Thursday

Sunny, with a high near 80. South southwest wind 7 to 13 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

Thursday Night

Partly cloudy, with a low around 45. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.

Friday

Mostly sunny, with a high near 81. Breezy, with a west wind 7 to 16 mph, with gusts as high as 24 mph.

Friday Night

Mostly cloudy, with a low around 46. Breezy.

Saturday

Mostly sunny, with a high near 81. Breezy.

Saturday Night

Partly cloudy, with a low around 38. Breezy.

Sunday

Partly sunny, with a high near 65.

Sunday Night

Mostly cloudy, with a low around 37.

Monday

Partly sunny, with a high near 67. Breezy.

Additional Forecasts and Information

Zone Area Forecast for Southwest Bighorn Basin, WY

Basemap Options

Click map to change the forecast location

Loading map...

ABOUT THIS FORECAST

Point Forecast:

4 Miles S East Thermopolis WY
43.6°N 108.22°W (Elev. 4495 ft)

7:47 am MDT Mar 17, 2026

Forecast Valid:

9am MDT Mar 17, 2026-6pm MDT Mar 23, 2026

Forecast Discussion

Additional Resources

Radar & Satellite Image

Link to Local Radar Data

Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation