Keystone, WY Weather Forecast
Local 7-day forecast
Slight Chance Snow Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Keystone, WY in one place.
A slight chance of snow showers between 9am and 4pm. Partly sunny, with a high near 38. West wind 5 to 10 mph. Chance of precipitation is 20%. Little or no snow accumulation expected.
Local Weather Overview
This forecast page for Keystone, 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: Nov 4, 2026 7:08 PM MST.
The active forecast window currently covers Nov 6 to Nov 11, 2026 for Keystone, WY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 6 to Nov 11, 2026
- Latest sync
- Nov 4, 2026 7:08 PM MST
- Forecast office
- CYS
- Source
- NOAA / NWS
Daily Outlook
This Week in Keystone
Sunday looks like the warmest upcoming period in Keystone at 50 degrees F.
Saturday Night is the coolest period ahead with temperatures near 21 degrees F.
The strongest winds are forecast for Friday at about 5 to 10 mph W.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Nov 4, 2026 7:08 PM MST
- Coverage
- 6 days
- Time zone
- America/Denver
- Forecast office
- CYS
- Radar station
- KCYS
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 24. West wind around 5 mph.
Sunny, with a high near 41.
Mostly clear, with a low around 21.
Sunny, with a high near 50.
Mostly clear, with a low around 24.
Sunny, with a high near 50.
Partly cloudy, with a low around 26.
Mostly sunny, with a high near 48.
Partly cloudy, with a low around 26.
Mostly sunny, with a high near 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Nov 6
|
Slight Chance Snow Showers
|
38°F |
5 to 10 mph
W
|
|
Friday Night
Nov 6
|
Mostly Clear
|
24°F |
5 mph
W
|
|
Saturday
Nov 7
|
Sunny
|
41°F |
0 to 5 mph
W
|
|
Saturday Night
Nov 7
|
Mostly Clear
|
21°F |
0 to 5 mph
WSW
|
|
Sunday
Nov 8
|
Sunny
|
50°F |
5 to 10 mph
SW
|
|
Sunday Night
Nov 8
|
Mostly Clear
|
24°F |
5 to 10 mph
WSW
|
|
Monday
Nov 9
|
Sunny
|
50°F |
0 to 5 mph
WSW
|
|
Monday Night
Nov 9
|
Partly Cloudy
|
26°F |
0 to 5 mph
SW
|
|
Tuesday
Nov 10
|
Mostly Sunny
|
48°F |
5 to 10 mph
WSW
|
|
Tuesday Night
Nov 10
|
Partly Cloudy
|
26°F |
5 mph
WSW
|
|
Veterans Day
Nov 11
|
Mostly Sunny
|
47°F |
5 to 10 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Keystone.