Grass Creek, WY Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grass Creek, WY in one place.
Sunny. High near 68, with temperatures falling to around 64 in the afternoon. South southeast wind 5 to 15 mph, with gusts as high as 23 mph.
Local Weather Overview
This forecast page for Grass Creek, 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 11:10 PM MDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Grass Creek, WY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 14, 2026 11:10 PM MDT
- Forecast office
- RIW
- Source
- NOAA / NWS
Daily Outlook
This Week in Grass Creek
Thursday looks like the warmest upcoming period in Grass Creek at 72 degrees F.
Saturday Night is the coolest period ahead with temperatures near 47 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 15 mph SSE.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 11:10 PM MDT
- Coverage
- 7 days
- Time zone
- America/Denver
- Forecast office
- RIW
- Radar station
- KRIW
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 50. West northwest wind 3 to 12 mph.
Sunny, with a high near 66. North wind 3 to 12 mph.
Partly cloudy, with a low around 50. West northwest wind 3 to 12 mph.
A slight chance of rain showers before noon, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 72. South wind 3 to 10 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 53. West southwest wind 5 to 8 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms after noon. Sunny, with a high near 69. Chance of precipitation is 40%.
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49. Chance of precipitation is 40%.
A slight chance of rain showers before noon, then a chance of showers and thunderstorms. Sunny, with a high near 67.
A slight chance of showers and thunderstorms before midnight. Mostly clear, with a low around 47.
Sunny, with a high near 68.
Mostly clear, with a low around 49.
Sunny, with a high near 71.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Sep 15
|
Sunny
|
68°F |
5 to 15 mph
SSE
|
|
Tuesday Night
Sep 15
|
Mostly Clear
|
50°F |
3 to 12 mph
WNW
|
|
Wednesday
Sep 16
|
Sunny
|
66°F |
3 to 12 mph
N
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
50°F |
3 to 12 mph
WNW
|
|
Thursday
Sep 17
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
72°F |
3 to 10 mph
S
|
|
Thursday Night
Sep 17
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
53°F |
5 to 8 mph
WSW
|
|
Friday
Sep 18
|
Sunny then Chance Showers And Thunderstorms
|
69°F |
5 to 9 mph
N
|
|
Friday Night
Sep 18
|
Chance Showers And Thunderstorms then Partly Cloudy
|
49°F |
5 to 9 mph
WNW
|
|
Saturday
Sep 19
|
Chance Showers And Thunderstorms
|
67°F |
3 to 8 mph
NNW
|
|
Saturday Night
Sep 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
47°F |
8 mph
NW
|
|
Sunday
Sep 20
|
Sunny
|
68°F |
7 mph
NNW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
49°F |
7 mph
NW
|
|
Monday
Sep 21
|
Sunny
|
71°F |
5 to 8 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grass Creek.