Mills, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mills, a town in Natrona County, Wyoming.
Today
73°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 73. West southwest wind 6 to 12 mph. Chance of precipitation is 30%.
7-day forecast for Mills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph WSW | 29% |
| Tonight | 42°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 8 mph NW | 68% |
| Sunday | 64°F | Showers And Thunderstorms Likely | 8 to 13 mph W | 66% |
| Sunday Night | 38°F | Mostly Cloudy | 2 to 8 mph SW | 9% |
| Monday | 70°F | Sunny | 5 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 3 to 9 mph SSE | 0% |
| Tuesday | 76°F | Sunny | 2 to 6 mph SSW | 0% |
| Tuesday Night | 46°F | Slight Chance Showers And Thunderstorms | 6 mph SE | 17% |
| Wednesday | 77°F | Mostly Sunny | 10 to 14 mph SW | 7% |
| Wednesday Night | 46°F | Partly Cloudy | 6 mph SW | 6% |
| Thursday | 80°F | Sunny | 9 mph SW | 0% |
| Thursday Night | 47°F | Mostly Clear | 5 mph SSE | 1% |
| Friday | 81°F | Mostly Sunny | 7 to 13 mph SW | 5% |
| Friday Night | 49°F | Partly Cloudy | 8 to 12 mph SSW | 8% |
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
Nearby towns & communities
Alcova
Antelope Hills
Bar Nunn
Bessemer Bend
Brookhurst
Casper
Casper Mountain
Edgerton
Evansville
Hartrandt
Homa Hills
Meadow Acres
Midwest
Mountain View
Powder River
Red Butte
Vista West
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 Sep 19, 2026.