Weather in Des Moines, IA
Des Moines, Saturday, 8 August, 15:38
Clear. Feels like 85°. High 83°, low 61°.
Monthly outlook for Des Moines, IA: average high 88.9°, average low 65.4°. That is 3.8° above the climate normal for August. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 10 August (99.2°), the coolest 23 August (50.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 89.5° | 82.1° | +4.1° |
| 18 August – 27 August | 88° | 82.2° | +3.2° |
| 28 August – 6 September | at normal | 80.7° | — |
August records over 66 years
0.06
Des Moines, Sunday, 9 August
Rain. High 96°, low 70°.
0.03Des Moines, Monday, 10 August
Light rain. High 99°, low 68°.
0.02Des Moines, Tuesday, 11 August
Light rain. High 99°, low 72°.
0.24Des Moines, Wednesday, 12 August
Rain. High 92°, low 72°.
0.29Des Moines, Thursday, 13 August
Light rain. High 80°, low 66°.
0
Des Moines, Friday, 14 August
Mostly clear. High 81°, low 57°.
0
Des Moines, Saturday, 15 August
Overcast. High 82°, low 59°.
0Des Moines, Sunday, 16 August
Overcast. High 84°, low 66°.
0.01Des Moines, Monday, 17 August
Light rain. High 97°, low 70°.
0.01Des Moines, Tuesday, 18 August
Light rain. High 93°, low 70°.
0.25Des Moines, Wednesday, 19 August
Rain. High 99°, low 71°.
0.14Des Moines, Thursday, 20 August
Light rain. High 87°, low 65°.
0
Des Moines, Friday, 21 August
Partly cloudy. High 87°, low 64°.
0.05Des Moines, Saturday, 22 August
Light rain. High 86°, low 65°.
0Des Moines, Sunday, 23 August
Mostly clear. High 76°, low 51°.
0.11Des Moines, Monday, 24 August
Climate normal for this date — 60-year average.
0.12Des Moines, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.19
Des Moines, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.17Des Moines, Thursday, 27 August
Climate normal for this date — 60-year average.
0.14Des Moines, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Des Moines, Saturday, 29 August
Climate normal for this date — 60-year average.
0.16Des Moines, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Des Moines, Monday, 31 August
Climate normal for this date — 60-year average.
0.09Des Moines, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Des Moines, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Des Moines, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07Des Moines, Friday, 4 September
Climate normal for this date — 60-year average.
0.08Des Moines, Saturday, 5 September
Climate normal for this date — 60-year average.
0.08Des Moines, 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 Des Moines, IA 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 Des Moines, IA 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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