Hartman, CO Weather & Growing Conditions
Tonight
34°F
Mostly Clear
Mostly clear, with a low around 34. West northwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 34°F | Mostly Clear | 5 mph WNW | 0% |
| Wednesday | 60°F | Mostly Sunny | 5 to 10 mph SE | 9% |
| Wednesday Night | 37°F | Rain Showers | 10 to 15 mph NNE | 80% |
| Thursday | 59°F | Mostly Sunny | 5 to 15 mph NNW | 4% |
| Thursday Night | 30°F | Mostly Clear | 0 to 5 mph WNW | 0% |
| Friday | 61°F | Mostly Sunny | 0 to 10 mph S | 2% |
| Friday Night | 33°F | Partly Cloudy | 5 mph WSW | 3% |
| Saturday | 62°F | Sunny | 5 mph WNW | 4% |
| Saturday Night | 32°F | Clear | 5 mph W | 2% |
| Sunday | 66°F | Sunny | 5 mph SW | 0% |
| Sunday Night | 35°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Monday | 68°F | Sunny | 5 to 10 mph N | 0% |
| Monday Night | 37°F | Partly Cloudy | 5 mph N | 0% |
| Tuesday | 64°F | Mostly Sunny | 5 mph SW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hartman, CO
Last spring frost
May 1
First fall frost
Oct 12
Growing season
163 days
Hardiness zone
6a
Explore more for Hartman, CO: full frost dates · planting calendar · Colorado frost dates
Climate data from the nearest NOAA station, Holly, Co (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.