Mills, WY Weather & Growing Conditions
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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 50°F | Sunny | 8 to 12 mph SW | 1% |
| Tonight | 27°F | Mostly Clear | 7 mph WSW | 0% |
| Wednesday | 52°F | Patchy Fog then Partly Sunny | 6 mph WNW | 0% |
| Wednesday Night | 27°F | Mostly Cloudy | 2 to 7 mph WNW | 0% |
| Thursday | 56°F | Mostly Sunny | 7 to 13 mph SSW | 0% |
| Thursday Night | 31°F | Partly Cloudy | 9 mph SW | 0% |
| Friday | 54°F | Sunny | 7 to 10 mph SW | 0% |
| Friday Night | 31°F | Mostly Clear | 8 to 14 mph SW | 4% |
| Saturday | 57°F | Sunny | 8 to 14 mph SW | 3% |
| Saturday Night | 33°F | Mostly Clear | 8 to 24 mph SSW | 0% |
| Sunday | 63°F | Sunny | 21 to 28 mph SW | 0% |
| Sunday Night | 39°F | Mostly Clear | 15 to 21 mph SW | 0% |
| Monday | 63°F | Mostly Sunny | 10 to 15 mph SW | 0% |
| Monday Night | 39°F | Partly Cloudy | 10 to 16 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mills, WY
Last spring frost
May 10
First fall frost
Sep 29
Growing season
138 days
Hardiness zone
5a
Explore more for Mills, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Casper Wwtp, Wy (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.