Jansen, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jansen, a community in Las Animas County, Colorado.
Overnight
31°F
Mostly Clear
Mostly clear, with a low around 31. West southwest wind around 5 mph.
7-day forecast for Jansen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 31°F | Mostly Clear | 5 mph WSW | 0% |
| Wednesday | 58°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph SE | 18% |
| Wednesday Night | 29°F | Slight Chance Showers And Thunderstorms then Chance Rain And Snow Showers | 5 to 10 mph NNW | 54% |
| Thursday | 53°F | Slight Chance Snow Showers then Sunny | 0 to 10 mph NNE | 24% |
| Thursday Night | 27°F | Partly Cloudy | 0 to 5 mph WSW | 0% |
| Friday | 58°F | Mostly Sunny | 0 to 5 mph SSE | 4% |
| Friday Night | 28°F | Partly Cloudy | 0 to 5 mph WSW | 7% |
| Saturday | 58°F | Sunny | 0 to 5 mph NNW | 8% |
| Saturday Night | 27°F | Mostly Clear | 0 to 10 mph W | 1% |
| Sunday | 66°F | Sunny | 5 to 10 mph SSW | 0% |
| Sunday Night | 30°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Monday | 69°F | Sunny | 0 to 10 mph WSW | 0% |
| Monday Night | 32°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Tuesday | 67°F | Mostly Sunny | 0 to 5 mph SSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Jansen (37.158, -104.550). Updated through the day.
Growing snapshot for Jansen
Last spring frost
Apr 30
First fall frost
Oct 15
Growing season
167 days
Hardiness zone
6a
More local growing data for Jansen: nearby ZIP 81082 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Aguilar
Branson
Cokedale
El Moro
Hoehne
Kim
Lynn
Segundo
Starkville
Stonewall Gap
Trinidad
Valdez
Weston
Climate data from the nearest NOAA station, Trinidad, Co (4.1 mi from Jansen). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.