South Cheyenne, Cheyenne Weather
South Cheyenne weather this week
Over the next 7 days in South Cheyenne, daytime highs range from 8°C to 15°C and night-time lows from 0°C to 5°C. The warmest afternoon is likely tomorrow at 15°C, while the coolest night is expected tomorrow night at 0°C. Temperatures trend cooler through the week, dropping by about 4°C. Expect a wide gap of around 14°C between afternoon and early-morning temperatures, so mornings will feel noticeably cooler.
Rain is most likely Friday. Snowfall is in the forecast Wednesday; check road conditions before travelling. Fog may reduce visibility in the mornings today, so drive with low-beam lights and extra caution.
It turns breezy on Saturday, with winds reaching about 58 km/h — secure loose objects on rooftops and balconies. UV levels stay moderate or lower, peaking at 4. Average humidity is a comfortable 43% or so.
| Day | Conditions | High / Low | Rain chance | Rain | Max wind |
|---|---|---|---|---|---|
| Today (Sunday) | Fog | 14° / 0° | 1% | 0.0 mm | 16 km/h |
| Tomorrow (Monday) | Overcast | 15° / 0° | 0% | 0.0 mm | 15 km/h |
| Tuesday | Overcast | 13° / 5° | 0% | 0.0 mm | 25 km/h |
| Wednesday | Slight snow | 10° / 2° | 2% | 0.1 mm | 57 km/h |
| Thursday | Overcast | 8° / 1° | 1% | 0.0 mm | 18 km/h |
| Friday | Partly cloudy | 11° / 3° | 52% | 0.0 mm | 41 km/h |
| Saturday | Mainly clear | 11° / 0° | 44% | 0.0 mm | 58 km/h |
Hourly forecast in South Cheyenne
16-day forecast for South Cheyenne
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South Cheyenne air quality & conditions
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Today's outlook for South Cheyenne
At 00:00 local time it is 4°C in South Cheyenne under overcast skies, feeling like 1°C. Today's forecast high is 14°C and the low is 0°C, and the day overall looks foggy. Rain is unlikely today (1% chance). Winds are blowing at about 9 km/h from the south. Humidity is 95%.
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Climate of South Cheyenne: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in South Cheyenne, with average daytime highs around 30°C. December is the coolest, when nights typically fall to about -8°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 39°C, so the seasons feel very different from each other.
The area receives about 430 mm of rain in a typical year. Rainfall is modest in every month; May is the wettest at about 65 mm. The driest stretch is December to January, with under 20 mm a month.
For outdoor plans and travel, June to September usually offer the most comfortable weather in South Cheyenne, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 3° | -8° | 16 mm | 63% |
| Feb | 3° | -8° | 20 mm | 63% |
| Mar | 9° | -4° | 31 mm | 57% |
| Apr | 14° | -1° | 49 mm | 54% |
| May | 19° | 4° | 65 mm | 54% |
| Jun | 27° | 10° | 49 mm | 46% |
| Jul | 30° | 14° | 53 mm | 46% |
| Aug | 28° | 13° | 42 mm | 47% |
| Sep | 24° | 8° | 36 mm | 47% |
| Oct | 15° | 1° | 33 mm | 53% |
| Nov | 8° | -4° | 20 mm | 57% |
| Dec | 2° | -8° | 19 mm | 64% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around South Cheyenne. Values describe typical conditions, not a forecast.
About South Cheyenne weather
South Cheyenne, in Wyoming's high-plains and mountain climate, exposed and wind-prone, is positioned about 227 km south-east of Casper. The warmer months mean warm days and cool nights (June–August). Finally, there's long, cold, windy winters (November–March) with significant snowfall. This page shows live, auto-refreshing weather for South Cheyenne: 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
South Cheyenne is about 227 km south-east of Casper, in Wyoming.
South Cheyenne 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 South Cheyenne's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in South Cheyenne, with average daytime highs of about 30°C and nights around 14°C.
The coldest nights come in December, when the average low is about -8°C and daytime highs reach around 2°C. Frost is possible on clear, calm nights.
South Cheyenne receives about 430 mm of rain in a typical year. May is the wettest month at roughly 65 mm; no month averages more than 100 mm.
June to September usually offer the most comfortable weather in South Cheyenne, with mild daytime temperatures and little rain.
In November South Cheyenne typically sees daytime highs near 8°C and lows near -4°C, with about 20 mm of rain over the month and average humidity around 57%. 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 South Cheyenne 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.
South Cheyenne'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.