Cortez, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cortez, a city in Montezuma County, Colorado.
Tonight
29°F
Partly Cloudy
Partly cloudy, with a low around 29. East southeast wind 0 to 5 mph.
7-day forecast for Cortez
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 29°F | Partly Cloudy | 0 to 5 mph ESE | 0% |
| Wednesday | 55°F | Sunny then Slight Chance Showers And Thunderstorms | 5 to 15 mph SW | 14% |
| Wednesday Night | 26°F | Mostly Clear | 0 to 5 mph N | 11% |
| Thursday | 55°F | Sunny | 0 to 5 mph SSE | 0% |
| Thursday Night | 28°F | Partly Cloudy | 0 mph | 0% |
| Friday | 57°F | Sunny | 0 to 5 mph WNW | 0% |
| Friday Night | 27°F | Mostly Clear | 0 to 5 mph NNE | 0% |
| Saturday | 58°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 28°F | Clear | 0 mph | 0% |
| Sunday | 60°F | Sunny | 0 to 5 mph SSW | 0% |
| Sunday Night | 30°F | Mostly Clear | 0 mph | 1% |
| Monday | 61°F | Mostly Sunny | 0 mph | 3% |
| Monday Night | 32°F | Partly Cloudy | 0 mph | 2% |
| Tuesday | 60°F | Mostly Sunny | 0 to 5 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov) for Cortez (37.350, -108.577). Updated through the day.
Growing snapshot for Cortez
Last spring frost
May 6
First fall frost
Oct 14
Growing season
158 days
Hardiness zone
7a
More local growing data for Cortez: nearby ZIP 81330 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cortez 8 Se, Co (2 mi from Cortez). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.