Mills, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mills, a town in Natrona County, Wyoming.
This Afternoon
50°F
Sunny
Sunny. High near 50, with temperatures falling to around 45 in the afternoon. Southwest wind 8 to 12 mph.
7-day forecast for Mills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 50°F | Sunny | 8 to 12 mph SW | 1% |
| Tonight | 27°F | Mostly Clear | 5 to 8 mph SW | 0% |
| Wednesday | 52°F | Partly Sunny | 6 mph WNW | 0% |
| Wednesday Night | 27°F | Mostly Cloudy | 2 to 8 mph W | 0% |
| Thursday | 55°F | Mostly Sunny | 8 to 15 mph SSW | 0% |
| Thursday Night | 31°F | Partly Cloudy | 10 mph SW | 0% |
| Friday | 53°F | Sunny | 8 to 12 mph SW | 0% |
| Friday Night | 30°F | Mostly Clear | 8 to 14 mph SW | 4% |
| Saturday | 56°F | Sunny | 8 to 14 mph SW | 3% |
| Saturday Night | 33°F | Mostly Clear | 8 to 24 mph SSW | 0% |
| Sunday | 62°F | Sunny | 21 to 26 mph SW | 0% |
| Sunday Night | 38°F | Mostly Clear | 16 to 21 mph SW | 0% |
| Monday | 62°F | Mostly Sunny | 10 to 16 mph SW | 0% |
| Monday Night | 38°F | Partly Cloudy | 10 to 16 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mills (42.850, -106.391). Updated through the day.
Growing snapshot for Mills
Last spring frost
May 10
First fall frost
Sep 29
Growing season
138 days
Hardiness zone
5a
More local growing data for Mills: nearby ZIP 82644 weather · frost dates · planting calendar · Wyoming frost dates
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Midwest
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Climate data from the nearest NOAA station, Casper Wwtp, Wy (4.3 mi from Mills). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.