Mills, WY Weather & Growing Conditions
Tonight
53°F
Partly Cloudy then Isolated Showers And Thunderstorms
Isolated showers and thunderstorms between midnight and 2am. Partly cloudy. Low around 53, with temperatures rising to around 56 overnight. West southwest wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Partly Cloudy then Isolated Showers And Thunderstorms | 5 mph WSW | 14% |
| Saturday | 73°F | Mostly Sunny then Isolated Showers And Thunderstorms | 5 to 10 mph WSW | 22% |
| Saturday Night | 45°F | Isolated Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 8 mph WNW | 73% |
| Sunday | 64°F | Showers And Thunderstorms Likely | 7 to 10 mph W | 63% |
| Sunday Night | 41°F | Partly Cloudy | 1 to 6 mph WNW | 9% |
| Monday | 70°F | Sunny | 1 to 6 mph SW | 0% |
| Monday Night | 44°F | Mostly Clear | 6 mph SE | 0% |
| Tuesday | 78°F | Sunny | 3 to 7 mph SW | 0% |
| Tuesday Night | 49°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SE | 12% |
| Wednesday | 78°F | Mostly Sunny | 8 to 12 mph SW | 8% |
| Wednesday Night | 49°F | Mostly Clear | 5 mph SW | 5% |
| Thursday | 79°F | Mostly Sunny | 7 mph SW | 4% |
| Thursday Night | 50°F | Partly Cloudy | 7 mph SE | 9% |
| Friday | 81°F | Mostly Sunny | 6 to 12 mph SW | 7% |
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 Sep 19, 2026.