Hartsel, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartsel, a community in Park County, Colorado.
Overnight
42°F
Partly Cloudy
Partly cloudy. Low around 42, with temperatures rising to around 44 overnight. West wind around 5 mph.
7-day forecast for Hartsel
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Partly Cloudy | 5 mph W | 1% |
| Saturday | 67°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 14 mph WSW | 39% |
| Saturday Night | 37°F | Mostly Clear | 2 to 14 mph W | 9% |
| Sunday | 66°F | Sunny | 1 to 14 mph W | 3% |
| Sunday Night | 37°F | Partly Cloudy | 2 to 12 mph NW | 4% |
| Monday | 68°F | Mostly Sunny | 1 to 10 mph WSW | 0% |
| Monday Night | 41°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 10 mph SSE | 19% |
| Tuesday | 67°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 12 mph WSW | 34% |
| Tuesday Night | 40°F | Chance Showers And Thunderstorms then Mostly Cloudy | 2 to 10 mph W | 42% |
| Wednesday | 66°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 2 to 9 mph SW | 24% |
| Wednesday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 9 mph WNW | 23% |
| Thursday | 65°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 12 mph SSW | 28% |
| Thursday Night | 41°F | Chance Rain Showers | 1 to 12 mph S | 41% |
| Friday | 66°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 12 mph SW | 31% |
Forecast source: National Weather Service (api.weather.gov) for Hartsel (39.023, -105.801). Updated through the day.
Growing snapshot for Hartsel
Growing season
57 days
Hardiness zone
4a
More local growing data for Hartsel: nearby ZIP 80449 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Antero Rsvr, Co (7 mi from Hartsel). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.