Etna, WY Weather Forecast
Local 7-day forecast
Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Etna, WY in one place.
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 75. South southeast wind 1 to 5 mph.
Local Weather Overview
This forecast page for Etna, WY is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 14, 2026 11:09 PM MDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Etna, WY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 11:09 PM MDT
- Forecast office
- RIW
- Source
- NOAA / NWS
Daily Outlook
This Week in Etna
Wednesday looks like the warmest upcoming period in Etna at 75 degrees F.
Saturday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Thursday at about 0 to 6 mph SSE.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 11:09 PM MDT
- Coverage
- 6 days
- Time zone
- America/Denver
- Forecast office
- RIW
- Radar station
- KSFX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain showers after midnight. Partly cloudy, with a low around 39. Southeast wind around 5 mph. Chance of precipitation is 20%.
A chance of rain showers before noon, then a chance of showers and thunderstorms. Mostly sunny, with a high near 73. South southeast wind 0 to 6 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 37. South wind 0 to 5 mph. Chance of precipitation is 40%.
A slight chance of rain showers before noon, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 70. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 33. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 69.
Mostly clear, with a low around 31.
Sunny, with a high near 72.
Partly cloudy, with a low around 34.
Sunny, with a high near 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Sunny then Slight Chance Showers And Thunderstorms
|
75°F |
1 to 5 mph
SSE
|
|
Wednesday Night
Sep 16
|
Partly Cloudy then Slight Chance Rain Showers
|
39°F |
5 mph
SE
|
|
Thursday
Sep 17
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
73°F |
0 to 6 mph
SSE
|
|
Thursday Night
Sep 17
|
Chance Showers And Thunderstorms
|
37°F |
0 to 5 mph
S
|
|
Friday
Sep 18
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
70°F |
2 mph
WNW
|
|
Friday Night
Sep 18
|
Slight Chance Showers And Thunderstorms
|
33°F |
0 to 3 mph
NW
|
|
Saturday
Sep 19
|
Sunny then Slight Chance Showers And Thunderstorms
|
69°F |
2 mph
NW
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
31°F |
3 mph
SW
|
|
Sunday
Sep 20
|
Sunny
|
72°F |
1 mph
NW
|
|
Sunday Night
Sep 20
|
Partly Cloudy
|
34°F |
3 mph
NNE
|
|
Monday
Sep 21
|
Sunny
|
74°F |
1 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Etna.