Gillette, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gillette, a city in Campbell County, Wyoming.
This Afternoon
81°F
Slight Chance Rain Showers
A slight chance of rain showers after 4pm. Sunny. High near 81, with temperatures falling to around 78 in the afternoon. Northeast wind around 6 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
7-day forecast for Gillette
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Slight Chance Rain Showers | 6 mph NE | 20% |
| Tonight | 55°F | Showers And Thunderstorms Likely | 6 mph S | 73% |
| Saturday | 69°F | Chance Rain Showers | 2 to 8 mph S | 54% |
| Saturday Night | 51°F | Showers And Thunderstorms Likely | 8 mph SE | 74% |
| Sunday | 61°F | Rain Showers | 5 to 8 mph NW | 87% |
| Sunday Night | 47°F | Showers And Thunderstorms Likely | 7 mph W | 58% |
| Monday | 67°F | Mostly Sunny | 5 to 10 mph S | 7% |
| Monday Night | 49°F | Mostly Clear | 10 to 20 mph SE | 1% |
| Tuesday | 75°F | Mostly Sunny | 9 to 17 mph SE | 1% |
| Tuesday Night | 52°F | Partly Cloudy | 9 to 13 mph SE | 10% |
| Wednesday | 77°F | Mostly Sunny | 10 mph SE | 10% |
| Wednesday Night | 52°F | Mostly Clear | 7 mph SE | 6% |
| Thursday | 79°F | Sunny | 7 to 10 mph S | 4% |
| Thursday Night | 53°F | Partly Cloudy | 10 to 14 mph SE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Gillette (44.273, -105.499). Updated through the day.
Growing snapshot for Gillette
Last spring frost
May 15
First fall frost
Oct 1
Growing season
136 days
Hardiness zone
4b
More local growing data for Gillette: nearby ZIP 82727 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Gillette 4Se, Wy (13.1 mi from Gillette). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.