Casper Mountain, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Casper Mountain, a community in Natrona County, Wyoming.
Today
65°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 65. East northeast wind around 9 mph.
7-day forecast for Casper Mountain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 65°F | Areas Of Smoke | 9 mph ENE | 1% |
| Tonight | 48°F | Areas Of Smoke | 3 to 13 mph ESE | 2% |
| Wednesday | 72°F | Sunny | 3 to 8 mph W | 0% |
| Wednesday Night | 52°F | Mostly Clear | 5 to 9 mph SSE | 0% |
| Thursday | 77°F | Sunny | 7 to 10 mph WSW | 0% |
| Thursday Night | 57°F | Clear | 3 to 10 mph SE | 0% |
| Friday | 81°F | Sunny | 6 to 9 mph WSW | 0% |
| Friday Night | 61°F | Mostly Clear | 9 mph SW | 0% |
| Saturday | 82°F | Sunny | 10 to 14 mph WSW | 0% |
| Saturday Night | 62°F | Mostly Clear | 8 mph SW | 0% |
| Sunday | 82°F | Sunny | 13 mph WSW | 1% |
| Sunday Night | 62°F | Partly Cloudy | 7 to 10 mph E | 5% |
| Monday | 81°F | Mostly Sunny | 10 mph W | 6% |
| Monday Night | 61°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 8 mph E | 19% |
Forecast source: National Weather Service (api.weather.gov) for Casper Mountain (42.742, -106.308). Updated through the day.
Growing snapshot for Casper Mountain
Last spring frost
May 10
First fall frost
Sep 29
Growing season
138 days
Hardiness zone
5a
More local growing data for Casper Mountain: nearby ZIP 82644 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
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Bessemer Bend
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Meadow Acres
Midwest
Mills
Mountain View
Powder River
Red Butte
Vista West
Climate data from the nearest NOAA station, Casper Wwtp, Wy (4.3 mi from Casper Mountain). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.