Gillette, WY Weather & Growing Conditions
This Afternoon
83°F
Mostly Sunny
Mostly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Northeast wind around 5 mph, with gusts as high as 17 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 83°F | Mostly Sunny | 5 mph NE | 12% |
| Tonight | 52°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph S | 73% |
| Saturday | 71°F | Rain Showers Likely | 2 to 6 mph SE | 68% |
| Saturday Night | 48°F | Showers And Thunderstorms Likely | 6 mph SE | 74% |
| Sunday | 64°F | Rain Showers | 3 to 7 mph NW | 91% |
| Sunday Night | 44°F | Showers And Thunderstorms Likely then Mostly Cloudy | 6 mph SE | 65% |
| Monday | 69°F | Partly Sunny | 3 to 8 mph SE | 8% |
| Monday Night | 45°F | Mostly Clear | 9 to 16 mph SE | 1% |
| Tuesday | 76°F | Mostly Sunny | 9 to 15 mph SE | 1% |
| Tuesday Night | 49°F | Partly Cloudy | 7 to 12 mph SE | 12% |
| Wednesday | 80°F | Mostly Sunny | 8 mph SE | 13% |
| Wednesday Night | 49°F | Mostly Clear | 6 mph SE | 7% |
| Thursday | 81°F | Sunny | 5 to 8 mph S | 3% |
| Thursday Night | 50°F | Partly Cloudy | 7 to 10 mph SE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Gillette, WY
Last spring frost
May 15
First fall frost
Oct 1
Growing season
136 days
Hardiness zone
4b
Explore more for Gillette, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Gillette 4Se, Wy (13.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.