Gillette, WY Weather & Growing Conditions
This Afternoon
69°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 69, with temperatures falling to around 64 in the afternoon. North wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Showers And Thunderstorms | 7 mph N | 79% |
| Tonight | 50°F | Showers And Thunderstorms | 6 mph W | 95% |
| Sunday | 62°F | Showers And Thunderstorms | 3 to 8 mph NW | 83% |
| Sunday Night | 47°F | Showers And Thunderstorms Likely | 1 to 7 mph N | 71% |
| Monday | 68°F | Partly Sunny | 1 to 8 mph SE | 8% |
| Monday Night | 47°F | Mostly Clear | 9 to 17 mph SE | 1% |
| Tuesday | 77°F | Sunny | 14 mph SE | 0% |
| Tuesday Night | 52°F | Mostly Clear | 10 to 16 mph SE | 6% |
| Wednesday | 80°F | Slight Chance Rain Showers | 7 to 10 mph SW | 18% |
| Wednesday Night | 51°F | Partly Cloudy | 1 to 6 mph SW | 6% |
| Thursday | 83°F | Sunny | 3 to 7 mph S | 1% |
| Thursday Night | 55°F | Mostly Clear | 7 to 15 mph SE | 1% |
| Friday | 83°F | Mostly Sunny | 14 to 18 mph S | 2% |
| Friday Night | 53°F | Partly Cloudy | 9 to 16 mph S | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Gillette, WY
Last spring frost
May 21
First fall frost
Sep 23
Growing season
123 days
Hardiness zone
5a
Explore more for Gillette, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Echeta 2 Nw, Wy (13.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.