Hartville, WY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartville, a town in Platte County, Wyoming.
Overnight
55°F
Mostly Cloudy
Mostly cloudy, with a low around 55. West wind around 5 mph.
7-day forecast for Hartville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Cloudy | 5 mph W | 4% |
| Saturday | 71°F | Chance Showers And Thunderstorms | 5 mph W | 45% |
| Saturday Night | 49°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph E | 64% |
| Sunday | 63°F | Rain Showers Likely | 5 to 10 mph NNW | 58% |
| Sunday Night | 47°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 15 mph NW | 39% |
| Monday | 67°F | Mostly Sunny | 5 to 10 mph S | 3% |
| Monday Night | 47°F | Mostly Clear | 10 to 15 mph ESE | 1% |
| Tuesday | 74°F | Sunny | 10 to 15 mph SE | 2% |
| Tuesday Night | 51°F | Partly Cloudy | 10 to 15 mph SE | 12% |
| Wednesday | 76°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSE | 15% |
| Wednesday Night | 50°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSW | 22% |
| Thursday | 78°F | Sunny | 0 to 5 mph NW | 3% |
| Thursday Night | 52°F | Mostly Clear | 5 mph ESE | 5% |
| Friday | 80°F | Mostly Sunny | 5 to 15 mph SSE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Hartville (42.328, -104.725). Updated through the day.
Growing snapshot for Hartville
Last spring frost
May 7
First fall frost
Oct 6
Growing season
152 days
Hardiness zone
5a
More local growing data for Hartville: nearby ZIP 82214 weather · frost dates · planting calendar · Wyoming frost dates
Nearby towns & communities
Chugcreek
Chugwater
El Rancho
Glendo
Guernsey
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 Hartville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.