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
82°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Southwest wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Jansen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Slight Chance Showers And Thunderstorms | 10 mph SW | 14% |
| Tonight | 49°F | Partly Cloudy | 5 to 15 mph W | 6% |
| Sunday | 82°F | Sunny | 5 mph SW | 4% |
| Sunday Night | 46°F | Mostly Cloudy then Rain Showers Likely | 5 mph N | 64% |
| Monday | 76°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph NE | 15% |
| Monday Night | 49°F | Chance Showers And Thunderstorms | 5 to 10 mph SSE | 25% |
| Tuesday | 73°F | Partly Sunny then Chance Showers And Thunderstorms | 10 to 15 mph SSW | 49% |
| Tuesday Night | 49°F | Chance Showers And Thunderstorms | 15 to 20 mph SSW | 54% |
| Wednesday | 72°F | Chance Rain Showers then Chance Showers And Thunderstorms | 15 mph SSW | 44% |
| Wednesday Night | 49°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 10 to 15 mph SSW | 22% |
| Thursday | 74°F | Partly Sunny then Chance Showers And Thunderstorms | 5 mph NNW | 45% |
| Thursday Night | 49°F | Showers And Thunderstorms Likely | 5 mph S | 55% |
| Friday | 73°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph S | 52% |
| Friday Night | 49°F | Chance Showers And Thunderstorms | 10 to 15 mph SSW | 45% |
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 Sep 20, 2026.