Casper, WY Weather Forecast
Local 7-day forecast
Mostly Sunny then Isolated Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Casper, WY in one place.
Isolated showers and thunderstorms after noon. Mostly sunny, with a high near 88. Southwest wind 7 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Casper, 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: Aug 27, 2026 7:55 PM MDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Casper, WY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 7:55 PM MDT
- Forecast office
- RIW
- Source
- NOAA / NWS
Daily Outlook
This Week in Casper
Saturday looks like the warmest upcoming period in Casper at 88 degrees F.
Sunday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Sunday at about 18 to 28 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 7:55 PM MDT
- Coverage
- 6 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
A slight chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 59. Southwest wind 13 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 20%.
Mostly sunny, with a high near 83. Southwest wind 18 to 28 mph, with gusts as high as 40 mph.
Partly cloudy, with a low around 55.
Mostly sunny, with a high near 83.
Partly cloudy, with a low around 56.
Mostly sunny, with a high near 84.
Partly cloudy, with a low around 57.
Mostly sunny, with a high near 84.
Partly cloudy, with a low around 57.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Mostly Sunny then Isolated Showers And Thunderstorms
|
88°F |
7 to 26 mph
SW
|
|
Saturday Night
Aug 29
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
59°F |
13 to 23 mph
SW
|
|
Sunday
Aug 30
|
Mostly Sunny
|
83°F |
18 to 28 mph
SW
|
|
Sunday Night
Aug 30
|
Partly Cloudy
|
55°F |
13 to 18 mph
SW
|
|
Monday
Aug 31
|
Mostly Sunny
|
83°F |
9 to 18 mph
SW
|
|
Monday Night
Aug 31
|
Partly Cloudy
|
56°F |
13 mph
SW
|
|
Tuesday
Sep 1
|
Mostly Sunny
|
84°F |
16 to 20 mph
SW
|
|
Tuesday Night
Sep 1
|
Partly Cloudy
|
57°F |
17 mph
SW
|
|
Wednesday
Sep 2
|
Mostly Sunny
|
84°F |
22 mph
SW
|
|
Wednesday Night
Sep 2
|
Partly Cloudy
|
57°F |
16 to 20 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Casper.
