Weather in Cou Falls, IA
Cou Falls, Saturday, 8 August, 23:06
Overcast. Feels like 69°. High 82°, low 63°.
Monthly outlook for Cou Falls, IA: average high 80.6°, average low 62.7°. That is 0.2° below the climate normal for August. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 9 August (91.7°), the coolest 21 August (51.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 81.1° | 81° | +0.1° |
| 18 August – 27 August | 79.7° | 81° | -0.7° |
| 28 August – 6 September | at normal | 79.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Tiffin (8 mi).
0
Cou Falls, Sunday, 9 August
Partly cloudy. High 92°, low 67°.
0Cou Falls, Monday, 10 August
Partly cloudy. High 88°, low 72°.
0Cou Falls, Tuesday, 11 August
Overcast. High 91°, low 71°.
0Cou Falls, Wednesday, 12 August
Overcast. High 84°, low 68°.
0.05
Cou Falls, Thursday, 13 August
Light rain. High 72°, low 62°.
0Cou Falls, Friday, 14 August
Overcast. High 77°, low 60°.
0.04Cou Falls, Saturday, 15 August
Light rain. High 67°, low 60°.
0Cou Falls, Sunday, 16 August
Overcast. High 75°, low 61°.
0Cou Falls, Monday, 17 August
Partly cloudy. High 85°, low 65°.
0Cou Falls, Tuesday, 18 August
Overcast. High 89°, low 67°.
0.04Cou Falls, Wednesday, 19 August
Light rain. High 76°, low 61°.
0.13Cou Falls, Thursday, 20 August
Light rain. High 68°, low 54°.
0Cou Falls, Friday, 21 August
Overcast. High 74°, low 52°.
0Cou Falls, Saturday, 22 August
Light rain. High 86°, low 58°.
0
Cou Falls, Sunday, 23 August
Clear. High 85°, low 64°.
0.09Cou Falls, Monday, 24 August
Climate normal for this date — 60-year average.
0.17Cou Falls, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.17
Cou Falls, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12Cou Falls, Thursday, 27 August
Climate normal for this date — 60-year average.
0.2Cou Falls, Friday, 28 August
Climate normal for this date — 60-year average.
0.1Cou Falls, Saturday, 29 August
Climate normal for this date — 60-year average.
0.09Cou Falls, Sunday, 30 August
Climate normal for this date — 60-year average.
0.1Cou Falls, Monday, 31 August
Climate normal for this date — 60-year average.
0.09Cou Falls, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.12Cou Falls, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Cou Falls, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07Cou Falls, Friday, 4 September
Climate normal for this date — 60-year average.
0.07
Cou Falls, Saturday, 5 September
Climate normal for this date — 60-year average.
0.11Cou Falls, 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 Cou Falls, 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 Cou Falls, 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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