Cortez, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cortez, a city in Montezuma County, Colorado.
Tonight
47°F
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before midnight, then showers and thunderstorms likely between midnight and 4am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 47. East wind 5 to 15 mph. Chance of precipitation is 60%.
7-day forecast for Cortez
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 15 mph E | 55% |
| Saturday | 76°F | Sunny | 5 to 10 mph SSE | 11% |
| Saturday Night | 44°F | Mostly Clear | 5 mph ENE | 1% |
| Sunday | 76°F | Sunny | 0 to 10 mph WSW | 0% |
| Sunday Night | 43°F | Partly Cloudy | 5 mph N | 0% |
| Monday | 76°F | Mostly Sunny | 5 mph SE | 0% |
| Monday Night | 46°F | Partly Cloudy | 5 to 10 mph ESE | 10% |
| Tuesday | 74°F | Showers And Thunderstorms Likely | 10 mph SE | 62% |
| Tuesday Night | 45°F | Showers And Thunderstorms Likely | 5 to 15 mph ESE | 63% |
| Wednesday | 72°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 mph SE | 43% |
| Wednesday Night | 44°F | Slight Chance Showers And Thunderstorms | 5 mph ESE | 22% |
| Thursday | 73°F | Chance Rain Showers | 5 mph SE | 42% |
| Thursday Night | 46°F | Chance Showers And Thunderstorms | 5 mph SE | 38% |
| Friday | 72°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 mph SSE | 52% |
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 Sep 19, 2026.