Casper 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

Casper 7-day weather forecast

Stacker created the forecast for Casper, Wyoming using data from OpenWeather. This week's high is 87 °F on Wednesday, while the low is 47 °F on Monday. There are expected to be 2 sunny days and rain on 2 days this week.

There are currently no weather alerts.

Monday, September 8

- High of 81 °F, low of 47 °F (17% humidity)
- Mostly cloudy with a 66% chance of rain (0 mm of rain)
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (18 mph wind)
- Sunrise at 6:37 AM, sunset at 7:28 PM
1 / 6
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Tuesday, September 9

- High of 82 °F, low of 59 °F (20% humidity)
- Mostly cloudy with a 100% chance of rain (1 mm of rain)
- High risk of harm from sun exposure (6 UV index)
- Fresh breeze (20 mph wind)
- Sunrise at 6:39 AM, sunset at 7:26 PM
2 / 6
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Wednesday, September 10

- High of 87 °F, low of 62 °F (20% humidity)
- Mostly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (7 UV index)
- Fresh breeze (23 mph wind)
- Sunrise at 6:40 AM, sunset at 7:24 PM
3 / 6
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Thursday, September 11

- High of 84 °F, low of 66 °F (20% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Fresh breeze (19 mph wind)
- Sunrise at 6:41 AM, sunset at 7:22 PM
4 / 6
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Friday, September 12

- High of 80 °F, low of 63 °F (23% humidity)
- Mostly sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:42 AM, sunset at 7:21 PM
5 / 6
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Saturday, September 13

- High of 73 °F, low of 58 °F (34% humidity)
- Fair with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Strong breeze (30 mph wind)
- Sunrise at 6:43 AM, sunset at 7:19 PM
6 / 6
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Sunday, September 14

- High of 79 °F, low of 59 °F (23% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Strong breeze (26 mph wind)
- Sunrise at 6:44 AM, sunset at 7:17 PM
- Last quarter moon

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