Grand Junction, CO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Junction, a city in Mesa County, Colorado.
Today
102°F
Patchy Smoke
Patchy smoke. Sunny, with a high near 102. North wind 0 to 15 mph.
7-day forecast for Grand Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 102°F | Patchy Smoke | 0 to 15 mph N | 0% |
| Tonight | 67°F | Patchy Smoke then Mostly Clear | 5 to 15 mph WNW | 1% |
| Wednesday | 100°F | Sunny then Patchy Smoke | 0 to 10 mph NNE | 0% |
| Wednesday Night | 66°F | Mostly Clear | 5 to 10 mph S | 0% |
| Thursday | 102°F | Sunny | 0 to 10 mph NE | 0% |
| Thursday Night | 69°F | Mostly Clear | 0 to 10 mph SSW | 0% |
| Friday | 103°F | Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 71°F | Mostly Clear | 0 to 5 mph S | 0% |
| Saturday | 104°F | Sunny | 0 to 10 mph E | 0% |
| Saturday Night | 73°F | Mostly Clear | 5 to 10 mph SSW | 0% |
| Sunday | 102°F | Sunny | 0 to 10 mph NNW | 1% |
| Sunday Night | 73°F | Partly Cloudy | 5 to 10 mph SW | 5% |
| Monday | 100°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph NNE | 15% |
| Monday Night | 70°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph SSW | 26% |
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 Aug 4, 2026.