Grand Junction, CO Weather & Climate Normals
What a normal year in Grand Junction actually looks like
On the 30-year record NOAA keeps for Grand Junction, CO, the comfort score comes out to 36/100, weather-driven: Heat, cold, snow, or rainfall here are heavy enough that they shape daily life for a large part of the year. Only 3 months a year land in the 55–75°F range this site treats as mild.
How much Grand Junction's weather actually swings
Average temperatures in Grand Junction run from 29°F in Jan up to 80°F in Jul, a 51.1°F seasonal swing, one of the widest gaps in this dataset.
Grand Junction, month by month
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 39°F | 19°F | 0.77in |
| Feb | 47°F | 26°F | 0.65in |
| Mar | 59°F | 35°F | 0.87in |
| Apr | 67°F | 41°F | 1.06in |
| May | 77°F | 50°F | 1.27in |
| Jun | 89°F | 59°F | 0.6in |
| Jul | 95°F | 66°F | 0.89in |
| Aug | 91°F | 64°F | 1.03in |
| Sep | 82°F | 55°F | 1.47in |
| Oct | 67°F | 42°F | 1.27in |
| Nov | 52°F | 30°F | 0.81in |
| Dec | 39°F | 21°F | 0.68in |
If you're timing a visit, May, Jun, and Sep are Grand Junction's mildest stretch; if you're moving there, you should plan around Jul's heat and Jan's cold instead.
How wet Grand Junction actually gets
Grand Junction averages 11.37in of precipitation a year across roughly 0 days with measurable rain or snow; the nearest NOAA station does not record snowfall, so no snow figure is shown rather than guessed.
Grand Junction against the rest of the country
Out of 4876 cities scored here, Grand Junction comes in at 4791; within CO alone it ranks 69 of 79. Population is about 70,554.
Checking the actual forecast
These figures come from Grand Junction Wfo, CO US, the NOAA station 3.1 miles from Grand Junction, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is