Downtown Casper, Casper Weather
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Climate of Downtown Casper: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Downtown Casper, with average daytime highs around 32°C. January is the coolest, when nights typically fall to about -9°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 41°C, so the seasons feel very different from each other.
The area receives about 400 mm of rain in a typical year. Rainfall is modest in every month; May is the wettest at about 71 mm.
For outdoor plans and travel, June to September usually offer the most comfortable weather in Downtown Casper, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 2° | -9° | 18 mm | 70% |
| Feb | 3° | -9° | 22 mm | 66% |
| Mar | 9° | -4° | 34 mm | 59% |
| Apr | 13° | -1° | 47 mm | 57% |
| May | 19° | 4° | 71 mm | 54% |
| Jun | 27° | 11° | 39 mm | 46% |
| Jul | 32° | 16° | 34 mm | 41% |
| Aug | 30° | 14° | 24 mm | 40% |
| Sep | 24° | 9° | 30 mm | 43% |
| Oct | 14° | 1° | 35 mm | 54% |
| Nov | 7° | -4° | 20 mm | 60% |
| Dec | 1° | -9° | 21 mm | 69% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Downtown Casper. Values describe typical conditions, not a forecast.
About Downtown Casper weather
Downtown Casper is a place in Wyoming's high-plains and mountain climate, exposed and wind-prone, located about 2 km north-east of Casper. Downtown Casper gets warm days and cool nights (June–August) each year. Downtown Casper closes out the year with long, cold, windy winters (November–March) with significant snowfall. This page shows live, auto-refreshing weather for Downtown Casper: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Denver.
Frequently asked questions
Downtown Casper is about 2 km north-east of Casper, in Wyoming.
Downtown Casper sees long, cold, windy winters (November–March) with significant snowfall.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Downtown Casper's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Downtown Casper, with average daytime highs of about 32°C and nights around 16°C.
The coldest nights come in January, when the average low is about -9°C and daytime highs reach around 2°C. Frost is possible on clear, calm nights.
Downtown Casper receives about 400 mm of rain in a typical year. May is the wettest month at roughly 71 mm; no month averages more than 100 mm.
June to September usually offer the most comfortable weather in Downtown Casper, with mild daytime temperatures and little rain.
In November Downtown Casper typically sees daytime highs near 7°C and lows near -4°C, with about 20 mm of rain over the month and average humidity around 60%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Downtown Casper updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Downtown Casper's day-to-day weather follows the broader pattern of Wyoming described above. See the hourly weather forecast or the air quality index for more detail.