Harman US

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

WhenTempForecastWindPrecip
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.