Guernsey, WY Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Guernsey, WY in one place.
Sunny, with a high near 97. East southeast wind 5 to 15 mph.
Local Weather Overview
This forecast page for Guernsey, 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: Jul 17, 2026 12:11 PM MDT.
The active forecast window currently covers Jul 17 to Jul 23, 2026 for Guernsey, WY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 12:11 PM MDT
- Forecast office
- CYS
- Source
- NOAA / NWS
Daily Outlook
This Week in Guernsey
Sunday looks like the warmest upcoming period in Guernsey at 99 degrees F.
Thursday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Tuesday Night at about 10 to 20 mph ESE.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 12:11 PM MDT
- Coverage
- 8 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. Low around 63, with temperatures rising to around 66 overnight. East southeast wind 5 to 15 mph.
Sunny, with a high near 98. East southeast wind 5 to 15 mph.
Mostly clear, with a low around 66. Southeast wind 5 to 15 mph, with gusts as high as 25 mph.
A slight chance of showers and thunderstorms after noon. Sunny, with a high near 99. East wind 5 to 10 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 65. Chance of precipitation is 20%.
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 97.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
A chance of rain showers before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 89.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Showers and thunderstorms likely after noon. Partly sunny, with a high near 88.
Showers and thunderstorms likely. Mostly cloudy, with a low around 62.
Showers and thunderstorms likely after noon. Partly sunny, with a high near 87.
Showers and thunderstorms likely. Mostly cloudy, with a low around 61.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 17
|
Sunny
|
97°F |
5 to 15 mph
ESE
|
|
Tonight
Jul 17
|
Mostly Clear
|
63°F |
5 to 15 mph
ESE
|
|
Saturday
Jul 18
|
Sunny
|
98°F |
5 to 15 mph
ESE
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
66°F |
5 to 15 mph
SE
|
|
Sunday
Jul 19
|
Sunny then Slight Chance Showers And Thunderstorms
|
99°F |
5 to 10 mph
E
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
65°F |
5 to 10 mph
NNW
|
|
Monday
Jul 20
|
Mostly Sunny then Chance Showers And Thunderstorms
|
97°F |
5 to 10 mph
NNE
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
65°F |
5 to 10 mph
NE
|
|
Tuesday
Jul 21
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
89°F |
5 to 15 mph
E
|
|
Tuesday Night
Jul 21
|
Chance Showers And Thunderstorms
|
63°F |
10 to 20 mph
ESE
|
|
Wednesday
Jul 22
|
Partly Sunny then Showers And Thunderstorms Likely
|
88°F |
5 to 10 mph
SE
|
|
Wednesday Night
Jul 22
|
Showers And Thunderstorms Likely
|
62°F |
0 to 10 mph
S
|
|
Thursday
Jul 23
|
Partly Sunny then Showers And Thunderstorms Likely
|
87°F |
0 to 5 mph
NNE
|
|
Thursday Night
Jul 23
|
Showers And Thunderstorms Likely
|
61°F |
0 to 5 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Guernsey.
