Campbell County Area, Gillette Weather
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Climate of Campbell County Area: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Campbell County Area, with average daytime highs around 32°C. February 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 390 mm of rain in a typical year. Rainfall is modest in every month; May is the wettest at about 79 mm. The driest stretch is November to February, with under 20 mm a month.
For outdoor plans and travel, May to September usually offer the most comfortable weather in Campbell County Area, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 2° | -8° | 13 mm | 71% |
| Feb | 3° | -9° | 17 mm | 68% |
| Mar | 9° | -4° | 24 mm | 62% |
| Apr | 14° | 0° | 45 mm | 59% |
| May | 20° | 5° | 79 mm | 58% |
| Jun | 27° | 11° | 53 mm | 53% |
| Jul | 32° | 16° | 39 mm | 46% |
| Aug | 30° | 15° | 29 mm | 45% |
| Sep | 24° | 9° | 29 mm | 47% |
| Oct | 14° | 1° | 32 mm | 59% |
| Nov | 7° | -4° | 14 mm | 63% |
| Dec | 1° | -8° | 13 mm | 71% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Campbell County Area. Values describe typical conditions, not a forecast.
About Campbell County Area weather
Campbell County Area lies in Wyoming's high-plains and mountain climate, exposed and wind-prone — about 173 km north of Casper. Expect warm days and cool nights (June–August). Winter brings long, cold, windy winters (November–March) with significant snowfall. This page shows live, auto-refreshing weather for Campbell County Area: 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
Campbell County Area is about 173 km north of Casper, in Wyoming.
Campbell County Area 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 Campbell County Area's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Campbell County Area, with average daytime highs of about 32°C and nights around 16°C.
The coldest nights come in February, when the average low is about -9°C and daytime highs reach around 3°C. Frost is possible on clear, calm nights.
Campbell County Area receives about 390 mm of rain in a typical year. May is the wettest month at roughly 79 mm; no month averages more than 100 mm.
May to September usually offer the most comfortable weather in Campbell County Area, with mild daytime temperatures and little rain.
In November Campbell County Area typically sees daytime highs near 7°C and lows near -4°C, with about 14 mm of rain over the month and average humidity around 63%. 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 Campbell County Area 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.
Campbell County Area'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.