Weather in Carpentersville, IL
Carpentersville, Sunday, 9 August, 15:26
Overcast. Feels like 76°. High 80°, low 62°.
Monthly outlook for Carpentersville, IL: average high 80.1°, average low 65.1°. That is 0.2° above the climate normal for August. Precipitation is expected on 10 days (about 2.8 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 10 August (88.6°), the coolest 22 August (58.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.3° | 79.8° | +0.3° |
| 19 August – 28 August | 79.8° | 79.9° | -0° |
| 29 August – 7 September | at normal | 78.1° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Elgin (6 mi).
0.33
Carpentersville, Monday, 10 August
Rain. High 89°, low 72°.
0.48Carpentersville, Tuesday, 11 August
Heavy rain. High 80°, low 69°.
0Carpentersville, Wednesday, 12 August
Overcast. High 82°, low 64°.
0.04Carpentersville, Thursday, 13 August
Light rain. High 79°, low 64°.
0.15Carpentersville, Friday, 14 August
Light rain. High 75°, low 66°.
0.45Carpentersville, Saturday, 15 August
Rain. High 87°, low 69°.
0Carpentersville, Sunday, 16 August
Overcast. High 76°, low 66°.
0.11Carpentersville, Monday, 17 August
Light rain. High 72°, low 61°.
0.02Carpentersville, Tuesday, 18 August
Light rain. High 84°, low 70°.
0Carpentersville, Wednesday, 19 August
Overcast. High 82°, low 65°.
0.21Carpentersville, Thursday, 20 August
Light rain. High 83°, low 69°.
0.19Carpentersville, Friday, 21 August
Light rain. High 74°, low 60°.
0
Carpentersville, Saturday, 22 August
Clear. High 78°, low 59°.
0Carpentersville, Sunday, 23 August
Overcast. High 79°, low 60°.
0.05Carpentersville, Monday, 24 August
Light rain. High 84°, low 67°.
0.08
Carpentersville, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.16
Carpentersville, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Carpentersville, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13Carpentersville, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Carpentersville, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Carpentersville, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Carpentersville, Monday, 31 August
Climate normal for this date — 60-year average.
0.12Carpentersville, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Carpentersville, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Carpentersville, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1Carpentersville, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Carpentersville, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12Carpentersville, Sunday, 6 September
Climate normal for this date — 60-year average.
0.09Carpentersville, 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 Carpentersville, IL 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 Carpentersville, IL 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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