Weather in Cheyenne, WY
Cheyenne, Saturday, 8 August, 14:09
Partly cloudy. Feels like 89°. High 94°, low 61°.
Monthly outlook for Cheyenne, WY: average high 86.5°, average low 62.6°. That is 3.8° above the climate normal for August. Precipitation is expected on 7 days (about 2.5 inches), against a normal of 5 days and 0.7 inches. The warmest day looks like 11 August (94.2°), the coolest 10 August (57.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 88.2° | 79.6° | +4.8° |
| 18 August – 27 August | 83.7° | 79.6° | +2.3° |
| 28 August – 6 September | at normal | 78° | — |
August records over 66 years
0.07
Cheyenne, Sunday, 9 August
Rain. High 91°, low 63°.
0Cheyenne, Monday, 10 August
Partly cloudy. High 94°, low 58°.
0.01Cheyenne, Tuesday, 11 August
Light rain. High 94°, low 70°.
0
Cheyenne, Wednesday, 12 August
Overcast. High 92°, low 63°.
0.92Cheyenne, Thursday, 13 August
Heavy rain. High 82°, low 61°.
0.48Cheyenne, Friday, 14 August
Rain. High 77°, low 60°.
0.13Cheyenne, Saturday, 15 August
Light rain. High 83°, low 64°.
0Cheyenne, Sunday, 16 August
Overcast. High 87°, low 64°.
0.03Cheyenne, Monday, 17 August
Light rain. High 89°, low 67°.
0Cheyenne, Tuesday, 18 August
Overcast. High 87°, low 63°.
0.04Cheyenne, Wednesday, 19 August
Light rain. High 89°, low 66°.
0.47Cheyenne, Thursday, 20 August
Rain. High 74°, low 61°.
0
Cheyenne, Friday, 21 August
Clear. High 88°, low 60°.
0.33Cheyenne, Saturday, 22 August
Rain. High 80°, low 62°.
0Cheyenne, Sunday, 23 August
Light rain. High 84°, low 59°.
0.08
Cheyenne, Monday, 24 August
Climate normal for this date — 60-year average.
0.03Cheyenne, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.04Cheyenne, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.05Cheyenne, Thursday, 27 August
Climate normal for this date — 60-year average.
0.04Cheyenne, Friday, 28 August
Climate normal for this date — 60-year average.
0.04Cheyenne, Saturday, 29 August
Climate normal for this date — 60-year average.
0.03Cheyenne, Sunday, 30 August
Climate normal for this date — 60-year average.
0.03Cheyenne, Monday, 31 August
Climate normal for this date — 60-year average.
0.04Cheyenne, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Cheyenne, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.03Cheyenne, Thursday, 3 September
Climate normal for this date — 60-year average.
0.04Cheyenne, Friday, 4 September
Climate normal for this date — 60-year average.
0.04Cheyenne, Saturday, 5 September
Climate normal for this date — 60-year average.
0.03Cheyenne, 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 Cheyenne, WY 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 Cheyenne, WY 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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