Weather in Rainbow Hills, IL
Rainbow Hills, Saturday, 8 August, 23:17
Clear. Feels like 67°. High 83°, low 66°.
Monthly outlook for Rainbow Hills, IL: average high 76.8°, average low 61.2°. That is 1.7° below the climate normal for August. Precipitation is expected on 2 days (about 1.2 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 9 August (88.2°), the coolest 20 August (51.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 78.9° | 80° | -0.6° |
| 18 August – 27 August | 73.4° | 79.9° | -3.6° |
| 28 August – 6 September | at normal | 78.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Elgin (9 mi).
0.57
Rainbow Hills, Sunday, 9 August
Rain. High 88°, low 62°.
0.52Rainbow Hills, Monday, 10 August
Heavy rain. High 87°, low 70°.
0.03Rainbow Hills, Tuesday, 11 August
Light rain. High 84°, low 70°.
0.02Rainbow Hills, Wednesday, 12 August
Light rain. High 79°, low 65°.
0
Rainbow Hills, Thursday, 13 August
Overcast. High 74°, low 60°.
0
Rainbow Hills, Friday, 14 August
Mostly clear. High 76°, low 58°.
0Rainbow Hills, Saturday, 15 August
Overcast. High 68°, low 60°.
0Rainbow Hills, Sunday, 16 August
Overcast. High 74°, low 61°.
0.01Rainbow Hills, Monday, 17 August
Light rain. High 77°, low 63°.
0Rainbow Hills, Tuesday, 18 August
Overcast. High 80°, low 64°.
0.02Rainbow Hills, Wednesday, 19 August
Light rain. High 73°, low 58°.
0Rainbow Hills, Thursday, 20 August
Overcast. High 66°, low 51°.
0
Rainbow Hills, Friday, 21 August
Clear. High 74°, low 52°.
0.01Rainbow Hills, Saturday, 22 August
Light rain. High 69°, low 55°.
0Rainbow Hills, Sunday, 23 August
Clear. High 79°, low 62°.
0.13
Rainbow Hills, Monday, 24 August
Climate normal for this date — 60-year average.
0.08Rainbow Hills, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.16
Rainbow Hills, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Rainbow Hills, Thursday, 27 August
Climate normal for this date — 60-year average.
0.13Rainbow Hills, Friday, 28 August
Climate normal for this date — 60-year average.
0.13Rainbow Hills, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Rainbow Hills, Sunday, 30 August
Climate normal for this date — 60-year average.
0.09Rainbow Hills, Monday, 31 August
Climate normal for this date — 60-year average.
0.12Rainbow Hills, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.04Rainbow Hills, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.09Rainbow Hills, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1Rainbow Hills, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Rainbow Hills, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12Rainbow Hills, 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 Rainbow Hills, 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 Rainbow Hills, 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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