Weather in Coal Valley, IL
Coal Valley, Sunday, 9 August, 06:01
Overcast. Feels like 69°. High 92°, low 67°.
Monthly outlook for Coal Valley, IL: average high 85.4°, average low 68.6°. That is 2.4° above the climate normal for August. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 22 August (94.9°), the coolest 15 August (60.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 82.3° | 81.1° | +0.7° |
| 19 August – 28 August | 90.5° | 81.2° | +5.2° |
| 29 August – 7 September | at normal | 79.4° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Panorama Park (8 mi).
0.02
Coal Valley, Monday, 10 August
Light rain. High 90°, low 70°.
0.02Coal Valley, Tuesday, 11 August
Light rain. High 90°, low 71°.
0.07Coal Valley, Wednesday, 12 August
Light rain. High 84°, low 69°.
0.11Coal Valley, Thursday, 13 August
Light rain. High 76°, low 62°.
1.15Coal Valley, Friday, 14 August
Heavy rain. High 73°, low 62°.
0.05Coal Valley, Saturday, 15 August
Light rain. High 74°, low 61°.
0.02Coal Valley, Sunday, 16 August
Light rain. High 78°, low 66°.
0Coal Valley, Monday, 17 August
Overcast. High 83°, low 65°.
0Coal Valley, Tuesday, 18 August
Overcast. High 83°, low 66°.
0Coal Valley, Wednesday, 19 August
Overcast. High 92°, low 72°.
0Coal Valley, Thursday, 20 August
Overcast. High 91°, low 77°.
0
Coal Valley, Friday, 21 August
Partly cloudy. High 87°, low 73°.
0
Coal Valley, Saturday, 22 August
Clear. High 95°, low 69°.
0.02Coal Valley, Sunday, 23 August
Light rain. High 92°, low 78°.
0.43Coal Valley, Monday, 24 August
Rain. High 86°, low 69°.
0.12Coal Valley, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.19Coal Valley, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Coal Valley, Thursday, 27 August
Climate normal for this date — 60-year average.
0.14
Coal Valley, Friday, 28 August
Climate normal for this date — 60-year average.
0.09Coal Valley, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Coal Valley, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Coal Valley, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Coal Valley, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.08Coal Valley, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Coal Valley, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1Coal Valley, Friday, 4 September
Climate normal for this date — 60-year average.
0.06Coal Valley, Saturday, 5 September
Climate normal for this date — 60-year average.
0.13Coal Valley, Sunday, 6 September
Climate normal for this date — 60-year average.
0.12Coal Valley, 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 Coal Valley, 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 Coal Valley, 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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