Weather in Cottage Grove, OH
Cottage Grove, Sunday, 9 August, 03:19
Clear. Feels like 69°. High 87°, low 65°.
Monthly outlook for Cottage Grove, OH: average high 81.3°, average low 62.2°. That is 1° above the climate normal for August. Precipitation is expected on 3 days (about 3.2 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 23 August (93.3°), the coolest 16 August (53°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 77.6° | 79.8° | -1.2° |
| 19 August – 28 August | 87.4° | 79.4° | +4.5° |
| 29 August – 7 September | at normal | 77.7° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Portage Lakes (2 mi).
1.98
Cottage Grove, Monday, 10 August
Heavy rain. High 87°, low 64°.
1.15Cottage Grove, Tuesday, 11 August
Heavy rain. High 85°, low 63°.
0.06Cottage Grove, Wednesday, 12 August
Light rain. High 78°, low 63°.
0Cottage Grove, Thursday, 13 August
Light rain. High 71°, low 60°.
0
Cottage Grove, Friday, 14 August
Overcast. High 72°, low 55°.
0Cottage Grove, Saturday, 15 August
Overcast. High 72°, low 53°.
0.01Cottage Grove, Sunday, 16 August
Light rain. High 70°, low 53°.
0.01Cottage Grove, Monday, 17 August
Light rain. High 76°, low 55°.
0.01Cottage Grove, Tuesday, 18 August
Light rain. High 79°, low 60°.
0Cottage Grove, Wednesday, 19 August
Overcast. High 82°, low 60°.
0.02Cottage Grove, Thursday, 20 August
Light rain. High 87°, low 66°.
0
Cottage Grove, Friday, 21 August
Partly cloudy. High 91°, low 70°.
0
Cottage Grove, Saturday, 22 August
Mostly clear. High 87°, low 65°.
0Cottage Grove, Sunday, 23 August
Overcast. High 93°, low 70°.
0Cottage Grove, Monday, 24 August
Overcast. High 85°, low 73°.
0.1
Cottage Grove, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.07Cottage Grove, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13Cottage Grove, Thursday, 27 August
Climate normal for this date — 60-year average.
0.16Cottage Grove, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Cottage Grove, Saturday, 29 August
Climate normal for this date — 60-year average.
0.12Cottage Grove, Sunday, 30 August
Climate normal for this date — 60-year average.
0.13Cottage Grove, Monday, 31 August
Climate normal for this date — 60-year average.
0.09Cottage Grove, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.13Cottage Grove, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Cottage Grove, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Cottage Grove, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Cottage Grove, Saturday, 5 September
Climate normal for this date — 60-year average.
0.07Cottage Grove, Sunday, 6 September
Climate normal for this date — 60-year average.
0.13Cottage Grove, Monday, 7 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 Cottage Grove, OH 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 Cottage Grove, OH 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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