Thermopolis, WY Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Thermopolis, WY.

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Current Conditions — Thermopolis, WY

THERMOPOLIS (KHSG)

Light Snow

NULL F
Humidity:%
Wind Speed: mph
Barometer: in
Dewpoint: F
Visibility:7.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 27 2026, 02:35 AM MDT
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5-Day Forecast — Thermopolis, WY

Monday

High 50 °F
Chance of Snow
Monday
Night
Low 30 °F
Rain/Snow Mix Likely
Tuesday

High 55 °F
Chance of Scattered T-storms
Tuesday
Night
Low 30 °F
Partly Cloudy
Wednesday

High 60 °F
Chance of T-storms
Wednesday
Night
Low 35 °F
Chance of Rain
Thursday

High 62 °F
Chance of Showers
Thursday
Night
Low 35 °F
Mostly Clear
Friday

High 71 °F
Mostly Sunny

Detailed Forecast — Thermopolis, WY

Monday
Chance of Snow. High near 50°F. Wind 2 to 6 mph, with gusts as high as 9 mph.
Monday Night
Rain/Snow Mix Likely. Low around 30°F. Wind 2 to 6 mph, with gusts as high as 9 mph.
Tuesday
Chance of Scattered Thunderstorms. High near 55°F. Wind 2 to 6 mph, with gusts as high as 10 mph.
Tuesday Night
Partly Cloudy. Low around 30°F. Wind 2 to 3 mph, with gusts as high as 7 mph.
Wednesday
Chance of Thunderstorms. High near 60°F. Wind 2 to 9 mph, with gusts as high as 14 mph.
Wednesday Night
Chance of Rain. Low around 35°F. Wind 2 to 6 mph, with gusts as high as 9 mph.
Thursday
Chance of Showers. High near 62°F. Wind 6 to 7 mph, with gusts as high as 13 mph.
Thursday Night
Mostly Clear. Low around 35°F. Wind around 2 mph, with gusts as high as 6 mph.
Friday
Mostly Sunny. High near 71°F. Wind around 6 mph, with gusts as high as 12 mph.
Friday Night
Mostly Clear. Low around 39°F. Wind 2 to 3 mph, with gusts as high as 7 mph.
Saturday
Mostly Cloudy. High near 75°F. Wind 6 to 8 mph, with gusts as high as 13 mph.
Saturday Night
Partly Cloudy. Low around 41°F. Wind around 6 mph, with gusts as high as 9 mph.
Sunday
Chance of Thunderstorms. High near 73°F. Wind 9 to 12 mph, with gusts as high as 17 mph.
WY Radar
Current Radar • WY
Day 1 Outlook • April 27, 2026

Observation History — Thermopolis, WY

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
02:35 AM MDT 7.00 Light Snow -- NULL % NA NA M
02:15 AM MDT 4.6 4.00 Fog/Mist -- 27.1 24.1 88% 21.7 NA 29.94 1013.9
01:35 AM MDT 4.00 Light Snow -- NULL % NA NA M
01:15 AM MDT 4.6 3.00 Light Snow -- 27.5 24.6 89% 22.3 NA 29.94 1013.9
12:35 AM MDT 3.00 Light Snow -- NULL % NA NA M
12:15 AM MDT NW 10.4 G 16.1 2.50 Light Snow -- 27.9 24.8 88% 18.3 NA 29.93 1013.5
11:55 PM MDT 3.00 Light Snow -- NULL % NA NA M
11:35 PM MDT 2.50 Light Snow -- NULL % NA NA M
11:15 PM MDT NW 10.4 5.00 Light Snow -- 28.4 24.8 86% 19.0 NA 29.92 1013.2
10:35 PM MDT 7.00 Cloudy -- NULL % NA NA M
10:15 PM MDT NW 12.7 G 19.6 7.00 Cloudy -- 29.1 24.8 84% 18.9 NA 29.91 1012.9
09:35 PM MDT 2.00 Light Snow -- NULL % NA NA M
09:15 PM MDT NW 9.2 G 19.6 3.00 Light Snow -- 29.3 26.2 88% 20.8 NA 29.88 1011.9
07:35 PM MDT 18.4 G 29.9 1.75 Light Snow -- 30.6 28.0 90% 18.5 NA 29.80 1009.1
07:15 PM MDT 17.3 G 24.2 3.00 Light Snow -- 31.1 28.0 88% 19.6 NA 29.80 1009.1
06:35 PM MDT G 27.6 10.00 Cloudy -- NULL % NA NA M
06:15 PM MDT 20.7 G 26.5 10.00 Cloudy and Windy -- 33.1 28.8 84% 21.2 NA 29.77 1008.1
05:35 PM MDT G 23.0 10.00 Cloudy -- NULL % NA NA M
05:15 PM MDT 10.4 G 17.3 5.00 Light Rain -- 33.3 32.9 99% 25.2 NA 29.73 1006.8
04:35 PM MDT 10.4 7.00 Light Rain -- 34.9 34.5 99% 27.1 NA 29.71 1006.1
04:15 PM MDT 6.9 5.00 Light Rain -- 34.5 34.3 99% 28.6 NA 29.71 1006.1
03:35 PM MDT 7.00 Light Rain -- NULL % NA NA M
03:15 PM MDT 8.1 10.00 Light Rain -- 36.1 35.2 96% 29.8 NA 29.69 1005.4
02:35 PM MDT 10.00 Light Rain -- NULL % NA NA M

Regional Weather Observation

THERMOPOLIS (KHSG)

Light Snow
NULL F

BOYSEN/THERMOPOL (KTBX)

Cloudy
NULL F

WORLAND (KWRL)

Light Snow and Fog/Mist
30.2 F

RIVERTON (KRIW)

Cloudy
26.6 F

GREYBULL (KGEY)

Cloudy
30.2 F

CODY (KCOD)

Cloudy
26.6 F
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