Weather in Grand Junction, CO
Grand Junction, Saturday, 8 August, 18:31
Mostly clear. Feels like 97°. High 101°, low 69°.
Monthly outlook for Grand Junction, CO: average high 94.6°, average low 69.7°. That is 3.6° above the climate normal for August. Precipitation is expected on 6 days (about 0.6 inches), against a normal of 6 days and 1.6 inches. The warmest day looks like 9 August (101.4°), the coolest 10 August (62.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 94.4° | 88.9° | +3° |
| 18 August – 27 August | 94.8° | 86.5° | +4.6° |
| 28 August – 6 September | at normal | 85.7° | — |
August records over 66 years
0.03
Grand Junction, Sunday, 9 August
Light rain. High 101°, low 62°.
0Grand Junction, Monday, 10 August
Light rain. High 99°, low 62°.
0
Grand Junction, Tuesday, 11 August
Overcast. High 100°, low 71°.
0.01Grand Junction, Wednesday, 12 August
Light rain. High 94°, low 74°.
0Grand Junction, Thursday, 13 August
Overcast. High 96°, low 69°.
0.06Grand Junction, Friday, 14 August
Light rain. High 85°, low 70°.
0.15Grand Junction, Saturday, 15 August
Light rain. High 92°, low 67°.
0.02Grand Junction, Sunday, 16 August
Light rain. High 89°, low 74°.
0.08Grand Junction, Monday, 17 August
Light rain. High 88°, low 70°.
0.04Grand Junction, Tuesday, 18 August
Light rain. High 92°, low 68°.
0.16Grand Junction, Wednesday, 19 August
Light rain. High 88°, low 67°.
0.05Grand Junction, Thursday, 20 August
Light rain. High 93°, low 68°.
0Grand Junction, Friday, 21 August
Mostly clear. High 99°, low 74°.
0
Grand Junction, Saturday, 22 August
Partly cloudy. High 99°, low 75°.
0Grand Junction, Sunday, 23 August
Mostly clear. High 98°, low 74°.
0.09Grand Junction, Monday, 24 August
Climate normal for this date — 60-year average.
0.13
Grand Junction, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.12Grand Junction, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Grand Junction, Thursday, 27 August
Climate normal for this date — 60-year average.
0.08Grand Junction, Friday, 28 August
Climate normal for this date — 60-year average.
0.06Grand Junction, Saturday, 29 August
Climate normal for this date — 60-year average.
0.04Grand Junction, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Grand Junction, Monday, 31 August
Climate normal for this date — 60-year average.
0.08Grand Junction, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.05Grand Junction, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.07Grand Junction, Thursday, 3 September
Climate normal for this date — 60-year average.
0.08Grand Junction, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Grand Junction, Saturday, 5 September
Climate normal for this date — 60-year average.
0.1Grand Junction, Sunday, 6 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Grand Junction, CO are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Grand Junction, CO since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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