Jansen, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jansen, a community in Las Animas County, Colorado.
This Afternoon
58°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 58. Northeast wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Jansen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 58°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 18% |
| Tonight | 29°F | Showers And Thunderstorms | 5 to 20 mph N | 93% |
| Thursday | 53°F | Chance Snow Showers then Sunny | 0 to 15 mph NNE | 36% |
| Thursday Night | 28°F | Partly Cloudy | 0 to 5 mph SSW | 0% |
| Friday | 57°F | Partly Sunny | 0 to 10 mph SSE | 2% |
| Friday Night | 28°F | Partly Cloudy | 0 to 5 mph WSW | 4% |
| Saturday | 57°F | Sunny | 0 to 5 mph N | 4% |
| Saturday Night | 27°F | Mostly Clear | 0 to 5 mph WNW | 1% |
| Sunday | 63°F | Sunny | 5 mph SSW | 0% |
| Sunday Night | 30°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Monday | 68°F | Sunny | 0 to 10 mph W | 1% |
| Monday Night | 32°F | Mostly Clear | 0 to 5 mph W | 1% |
| Tuesday | 67°F | Mostly Sunny | 0 to 5 mph SSW | 1% |
| Tuesday Night | 32°F | Partly Cloudy | 0 to 5 mph WSW | 1% |
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 5, 2026.