Weather in Crest Hill, IL
Crest Hill, Saturday, 8 August, 19:40
Clear. Feels like 77°. High 83°, low 69°.
Monthly outlook for Crest Hill, IL: average high 78.9°, average low 63.3°. That is 1.1° below the climate normal for August. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 9 August (88.6°), the coolest 23 August (52.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 79.6° | 81° | -0.8° |
| 18 August – 27 August | 77.7° | 81° | -1.8° |
| 28 August – 6 September | at normal | 79.5° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Joliet (4 mi).
0.33
Crest Hill, Sunday, 9 August
Rain. High 89°, low 64°.
0.03Crest Hill, Monday, 10 August
Light rain. High 88°, low 72°.
0.15Crest Hill, Tuesday, 11 August
Rain. High 86°, low 73°.
0.01Crest Hill, Wednesday, 12 August
Light rain. High 79°, low 68°.
0.04Crest Hill, Thursday, 13 August
Light rain. High 72°, low 60°.
0Crest Hill, Friday, 14 August
Clear. High 74°, low 58°.
0
Crest Hill, Saturday, 15 August
Overcast. High 73°, low 55°.
0
Crest Hill, Sunday, 16 August
Mostly clear. High 75°, low 57°.
0.04Crest Hill, Monday, 17 August
Light rain. High 76°, low 67°.
0Crest Hill, Tuesday, 18 August
Light rain. High 84°, low 66°.
0.43Crest Hill, Wednesday, 19 August
Rain. High 82°, low 63°.
0.02Crest Hill, Thursday, 20 August
Light rain. High 78°, low 66°.
0.01Crest Hill, Friday, 21 August
Light rain. High 79°, low 64°.
0.02Crest Hill, Saturday, 22 August
Light rain. High 76°, low 60°.
0Crest Hill, Sunday, 23 August
Mostly clear. High 66°, low 52°.
0.12
Crest Hill, Monday, 24 August
Climate normal for this date — 60-year average.
0.11Crest Hill, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.17
Crest Hill, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12Crest Hill, Thursday, 27 August
Climate normal for this date — 60-year average.
0.11Crest Hill, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Crest Hill, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Crest Hill, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Crest Hill, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Crest Hill, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06Crest Hill, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08Crest Hill, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1Crest Hill, Friday, 4 September
Climate normal for this date — 60-year average.
0.06Crest Hill, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12Crest Hill, 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 Crest Hill, 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 Crest Hill, 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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