See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
23°
Dry and Clear
Feels Like: 19°
Min: 14°
Max: 25°
The next few hours will be clear, with today reaching 25°C and dropping to 7°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:50
Sunrise
19:09
Sunset
Moon
Waxing Crescent
10:45
Moonrise
20:11
Moonset
Daily Forecast
Monday
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
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Weather in Casper tomorrow, September 15, 2026
Casper looks cloudy on September 15, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Cloud leads the morning, peaking close to 72% near 11:00. Sunshine has little room until later in the day.
The day peaks near 24°C and cools toward 7°C. Moisture in the air spans 35%-79%, with the highest values around 11:00. A lighter breeze peaks around 10:00 near 6.5 km/h.
Expect persistent cloud later on, with amounts around 83% by 13:00. Sunshine remains the exception, not the rule. Expect visibility around 16.1 km. Daylight runs from 06:51 to 19:07, lasting 12 hours 16 minutes of sunlight today.
The practical takeaway for Casper on September 15, 2026 is a cloudy day that stays usable, just not particularly bright, around 24°C.
Frequently asked questions about weather in Casper
How warm does it get in Casper?
The warmest month in Casper is July, with average high temperatures of 31°C. The average temperature during this period is around 22°C.
How cold does it get in Casper?
The coldest month in Casper is January, with average low temperatures of -11°C. The average temperature during this period is around -7°C.
What is the wettest time of year in Casper?
The wettest month in Casper is May, with an average of 65mm of precipitation.
What is the driest time of year in Casper?
The driest month in Casper is July, with an average of 12mm of precipitation.
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