Guernsey, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Guernsey, a town in Platte County, Wyoming.
Overnight
53°F
Smoke
Smoke. Mostly cloudy, with a low around 53. East northeast wind around 5 mph.
7-day forecast for Guernsey
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Smoke | 5 mph ENE | 1% |
| Tuesday | 76°F | Smoke then Partly Sunny | 5 to 15 mph ESE | 2% |
| Tuesday Night | 56°F | Mostly Clear | 10 to 15 mph ESE | 13% |
| Wednesday | 85°F | Sunny | 0 to 5 mph SE | 3% |
| Wednesday Night | 58°F | Mostly Clear | 5 to 10 mph ESE | 1% |
| Thursday | 94°F | Sunny | 0 to 5 mph NNW | 0% |
| Thursday Night | 61°F | Clear | 0 to 5 mph ENE | 0% |
| Friday | 99°F | Sunny | 0 to 5 mph NNW | 0% |
| Friday Night | 65°F | Mostly Clear | 0 to 5 mph S | 0% |
| Saturday | 101°F | Sunny | 0 to 10 mph NNW | 0% |
| Saturday Night | 65°F | Mostly Clear | 0 to 15 mph ENE | 0% |
| Sunday | 100°F | Sunny | 0 to 10 mph NE | 3% |
| Sunday Night | 66°F | Partly Cloudy | 5 to 10 mph NNE | 7% |
| Monday | 98°F | Sunny | 5 to 10 mph NNE | 10% |
Forecast source: National Weather Service (api.weather.gov) for Guernsey (42.265, -104.743). Updated through the day.
Growing snapshot for Guernsey
Last spring frost
May 7
First fall frost
Oct 6
Growing season
152 days
Hardiness zone
5a
More local growing data for Guernsey: nearby ZIP 82214 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Chugcreek
Chugwater
El Rancho
Glendo
Hartville
Lakeview North
Orin
Slater
Westview Circle
Wheatland
Whiting
Y-O Ranch
Climate data from the nearest NOAA station, Guernsey 2Nw, Wy (1.5 mi from Guernsey). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.