Gillette, WY Weather & Growing Conditions
Overnight
23°F
Mostly Clear
Mostly clear. Low around 23, with temperatures rising to around 25 overnight. Southwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 23°F | Mostly Clear | 1 mph SW | 0% |
| Wednesday | 55°F | Mostly Sunny | 1 to 6 mph NW | 0% |
| Wednesday Night | 28°F | Partly Cloudy | 1 to 5 mph SW | 0% |
| Thursday | 63°F | Sunny | 5 to 10 mph S | 0% |
| Thursday Night | 34°F | Partly Cloudy | 3 to 7 mph SW | 1% |
| Friday | 56°F | Sunny | 0 to 5 mph W | 1% |
| Friday Night | 33°F | Mostly Clear | 1 to 5 mph S | 0% |
| Saturday | 61°F | Sunny | 1 to 8 mph W | 0% |
| Saturday Night | 35°F | Mostly Clear | 0 to 8 mph SW | 0% |
| Sunday | 70°F | Sunny | 2 to 12 mph SW | 0% |
| Sunday Night | 37°F | Partly Cloudy | 2 mph W | 0% |
| Monday | 62°F | Sunny | 1 to 5 mph N | 0% |
| Monday Night | 37°F | Partly Cloudy | 3 mph SE | 0% |
| Tuesday | 65°F | Mostly Sunny | 2 to 6 mph SW | 0% |
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 Nov 4, 2026.