Arapahoe, WY Weather Forecast & Alerts

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

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Current Conditions — Arapahoe, WY

RIVERTON (KRIW)

Cloudy

26.6 F
Humidity:80%
Wind Speed:E 4.6 mph
Barometer: in
Dewpoint:21.2 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:21.2 F
Apr 27 2026, 05:45 AM MDT
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5-Day Forecast — Arapahoe, WY

Monday

High 51 °F
Slight Chance of Snow
Monday
Night
Low 32 °F
Chance of Rain
Tuesday

High 57 °F
Isolated T-storm
Tuesday
Night
Low 28 °F
Partly Cloudy
Wednesday

High 60 °F
Isolated T-storm
Wednesday
Night
Low 35 °F
Slight Chance of Rain
Thursday

High 59 °F
Isolated T-storm
Thursday
Night
Low 35 °F
Mostly Clear
Friday

High 68 °F
Mostly Sunny

Detailed Forecast — Arapahoe, WY

Monday
Slight Chance of Snow. High near 51°F. Wind 6 to 8 mph, with gusts as high as 13 mph.
Monday Night
Chance of Rain. Low around 32°F. Wind 2 to 8 mph, with gusts as high as 13 mph.
Tuesday
Isolated T-storm. High near 57°F. Wind 2 to 8 mph, with gusts as high as 13 mph.
Tuesday Night
Partly Cloudy. Low around 28°F. Wind 5 to 6 mph, with gusts as high as 10 mph.
Wednesday
Isolated T-storm. High near 60°F. Wind 3 to 9 mph, with gusts as high as 14 mph.
Wednesday Night
Slight Chance of Rain. Low around 35°F. Wind 5 to 7 mph, with gusts as high as 12 mph.
Thursday
Isolated T-storm. High near 59°F. Wind around 8 mph, with gusts as high as 14 mph.
Thursday Night
Mostly Clear. Low around 35°F. Wind around 5 mph, with gusts as high as 6 mph.
Friday
Mostly Sunny. High near 68°F. Wind 5 to 7 mph, with gusts as high as 10 mph.
Friday Night
Mostly Clear. Low around 37°F. Wind 5 to 6 mph, with gusts as high as 8 mph.
Saturday
Partly Sunny. High near 73°F. Wind 7 to 9 mph, with gusts as high as 14 mph.
Saturday Night
Mostly Cloudy. Low around 41°F. Wind 6 to 7 mph, with gusts as high as 10 mph.
Sunday
Isolated T-storm. High near 73°F. Wind 10 to 13 mph, with gusts as high as 20 mph.
WY Radar
Current Radar • WY
Day 1 Outlook • April 27, 2026

Observation History — Arapahoe, 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)
05:45 AM MDT E 4.6 10.00 Cloudy -- 26.6 21.2 80% 21.2 NA M
05:40 AM MDT NE 4.6 10.00 Cloudy -- 26.6 21.2 80% 21.2 NA M
05:35 AM MDT NE 5.7 10.00 Cloudy -- 26.6 21.2 80% 19.9 NA M
05:25 AM MDT NE 6.9 10.00 Cloudy -- 26.6 21.2 80% 19.0 NA M
05:20 AM MDT 9.2 10.00 Cloudy -- 26.6 21.2 80% 17.4 NA M
05:05 AM MDT 10.4 10.00 Cloudy -- 26.6 21.2 80% 16.9 NA M
05:00 AM MDT 10.4 10.00 Cloudy -- 26.6 19.4 74% 16.9 NA M
04:50 AM MDT 11.5 10.00 Cloudy -- 26.6 21.2 80% 16.2 NA M
04:45 AM MDT 10.4 10.00 Cloudy -- 26.6 21.2 80% 16.9 NA M
04:40 AM MDT 12.7 10.00 Cloudy -- 26.6 21.2 80% 15.6 NA M
04:35 AM MDT 9.2 10.00 Cloudy -- 26.6 21.2 80% 17.4 NA M
04:30 AM MDT 9.2 10.00 Cloudy -- 26.6 21.2 80% 17.4 NA M
04:20 AM MDT NE 13.8 10.00 Cloudy -- 26.6 21.2 80% 15.1 NA M
04:15 AM MDT NE 12.7 10.00 Cloudy -- 26.6 21.2 80% 15.6 NA M
04:10 AM MDT 12.7 9.00 Cloudy -- 26.6 21.2 80% 15.6 NA M
04:05 AM MDT NE 12.7 9.00 Light Snow -- 26.6 21.2 80% 15.6 NA M
03:50 AM MDT NE 16.1 10.00 Cloudy -- 26.6 21.2 80% 14.2 NA M
03:45 AM MDT NE 17.3 10.00 Cloudy -- 26.6 21.2 80% 13.8 NA M
03:35 AM MDT NE 18.4 10.00 Cloudy -- 26.6 21.2 80% 13.5 NA M
03:30 AM MDT NE 18.4 G 25.3 10.00 Cloudy -- 26.6 21.2 80% 13.5 NA M
03:20 AM MDT NE 19.6 10.00 Cloudy and Windy -- 26.6 21.2 80% 13.1 NA M
03:15 AM MDT NE 17.3 10.00 Cloudy -- 26.6 21.2 80% 13.8 NA M
03:10 AM MDT NE 17.3 G 25.3 10.00 Cloudy -- 26.6 21.2 80% 13.8 NA M
03:05 AM MDT NE 15.0 10.00 Cloudy -- 26.6 21.2 80% 14.7 NA M

Regional Weather Observation

RIVERTON (KRIW)

Cloudy
26.6 F

BOYSEN/THERMOPOL (KTBX)

Cloudy
NULL F

LANDER (KLND)

Cloudy
26.6 F

THERMOPOLIS (KHSG)

Light Snow
27.5 F

BEAVER RIM (KBVR)

NULL
21.2 F

DUBOIS MUNI (KDUB)

Cloudy
23.0 F
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