Grand Junction, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Junction, a city in Mesa County, Colorado.
Tonight
56°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am, then showers and thunderstorms likely. Mostly cloudy, with a low around 56. East wind 5 to 10 mph. Chance of precipitation is 70%.
7-day forecast for Grand Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 71% |
| Saturday | 78°F | Chance Showers And Thunderstorms | 0 to 5 mph ESE | 61% |
| Saturday Night | 55°F | Slight Chance Rain Showers then Mostly Clear | 0 to 5 mph NE | 16% |
| Sunday | 77°F | Sunny | 0 to 5 mph NE | 0% |
| Sunday Night | 53°F | Mostly Clear | 0 to 5 mph E | 0% |
| Monday | 80°F | Mostly Sunny | 0 to 5 mph ENE | 0% |
| Monday Night | 56°F | Partly Cloudy | 0 to 10 mph E | 5% |
| Tuesday | 79°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 10 mph SW | 41% |
| Tuesday Night | 55°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph SSE | 58% |
| Wednesday | 77°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph ENE | 39% |
| Wednesday Night | 56°F | Partly Cloudy | 0 to 5 mph ESE | 6% |
| Thursday | 79°F | Mostly Sunny | 0 to 5 mph E | 9% |
| Thursday Night | 58°F | Partly Cloudy then Slight Chance Rain Showers | 0 mph | 21% |
| Friday | 78°F | Chance Rain Showers | 0 to 5 mph ENE | 37% |
Forecast source: National Weather Service (api.weather.gov) for Grand Junction (39.089, -108.567). Updated through the day.
Growing snapshot for Grand Junction
Last spring frost
Apr 14
First fall frost
Oct 23
Growing season
190 days
Hardiness zone
7a
More local growing data for Grand Junction: nearby ZIP 81501 weather · frost dates · planting calendar · Colorado frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grand Junction Wfo, Co (3.5 mi from Grand Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.