Weather in Bonnie Brae, IL
Bonnie Brae, Sunday, 9 August, 05:08
Clear. Feels like 65°. High 85°, low 64°.
Monthly outlook for Bonnie Brae, IL: average high 83.1°, average low 66.9°. That is 1.3° above the climate normal for August. Precipitation is expected on 8 days (about 1.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 22 August (92°), the coolest 14 August (59.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 80.2° | 80.9° | -0.4° |
| 19 August – 28 August | 87.9° | 80.9° | +3.9° |
| 29 August – 7 September | at normal | 79.3° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Joliet (8 mi).
0.19
Bonnie Brae, Monday, 10 August
Rain. High 90°, low 71°.
0.19Bonnie Brae, Tuesday, 11 August
Rain. High 80°, low 69°.
0.04Bonnie Brae, Wednesday, 12 August
Light rain. High 83°, low 70°.
0.07Bonnie Brae, Thursday, 13 August
Light rain. High 76°, low 63°.
0.03Bonnie Brae, Friday, 14 August
Light rain. High 74°, low 59°.
0.06Bonnie Brae, Saturday, 15 August
Light rain. High 76°, low 61°.
0.03Bonnie Brae, Sunday, 16 August
Light rain. High 77°, low 62°.
0.02Bonnie Brae, Monday, 17 August
Light rain. High 80°, low 65°.
0
Bonnie Brae, Tuesday, 18 August
Partly cloudy. High 78°, low 65°.
0.07Bonnie Brae, Wednesday, 19 August
Light rain. High 85°, low 67°.
0
Bonnie Brae, Thursday, 20 August
Overcast. High 88°, low 73°.
0
Bonnie Brae, Friday, 21 August
Mostly clear. High 86°, low 72°.
0
Bonnie Brae, Saturday, 22 August
Clear. High 92°, low 70°.
0Bonnie Brae, Sunday, 23 August
Overcast. High 91°, low 72°.
0.18Bonnie Brae, Monday, 24 August
Rain. High 86°, low 69°.
0.11Bonnie Brae, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.17
Bonnie Brae, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.12Bonnie Brae, Thursday, 27 August
Climate normal for this date — 60-year average.
0.11Bonnie Brae, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Bonnie Brae, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07Bonnie Brae, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Bonnie Brae, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Bonnie Brae, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.06Bonnie Brae, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08Bonnie Brae, Thursday, 3 September
Climate normal for this date — 60-year average.
0.1Bonnie Brae, Friday, 4 September
Climate normal for this date — 60-year average.
0.06Bonnie Brae, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12Bonnie Brae, Sunday, 6 September
Climate normal for this date — 60-year average.
0.13Bonnie Brae, 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 Bonnie Brae, 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 Bonnie Brae, 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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