Weather in Brussels, IL
Brussels, Saturday, 10 October, 09:03
Overcast. Feels like 64°. High 82°, low 59°.
Monthly outlook for Brussels, IL: average high 70°, average low 50.1°. That is 2.1° above the climate normal for October. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (90°), the coolest 18 October (28.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 71.7° | 67.1° | +2.6° |
| 20 October – 29 October | 67° | 63.4° | +2° |
| 30 October – 8 November | at normal | 59.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — O'Fallon (13 mi).
0
Brussels, Sunday, 11 October
Clear. High 87°, low 50°.
0Brussels, Monday, 12 October
Clear. High 89°, low 61°.
0Brussels, Tuesday, 13 October
Clear. High 90°, low 72°.
0.19
Brussels, Wednesday, 14 October
Light rain. High 78°, low 68°.
1.36Brussels, Thursday, 15 October
Heavy rain. High 67°, low 59°.
0.02Brussels, Friday, 16 October
Light rain. High 64°, low 46°.
0Brussels, Saturday, 17 October
Overcast. High 45°, low 35°.
0Brussels, Sunday, 18 October
Clear. High 51°, low 29°.
0
Brussels, Monday, 19 October
Partly cloudy. High 64°, low 36°.
0Brussels, Tuesday, 20 October
Overcast. High 67°, low 43°.
0.34Brussels, Wednesday, 21 October
Rain. High 58°, low 49°.
0Brussels, Thursday, 22 October
Clear. High 71°, low 45°.
0
Brussels, Friday, 23 October
Mostly clear. High 69°, low 49°.
0Brussels, Saturday, 24 October
Overcast. High 68°, low 52°.
0.31Brussels, Sunday, 25 October
Rain. High 68°, low 49°.
0.13
Brussels, Monday, 26 October
Climate normal for this date — 60-year average.
0.09Brussels, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.05Brussels, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.13Brussels, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Brussels, Friday, 30 October
Climate normal for this date — 60-year average.
0.16Brussels, Saturday, 31 October
Climate normal for this date — 60-year average.
0.19Brussels, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Brussels, Monday, 2 November
Climate normal for this date — 60-year average.
0.12Brussels, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.15Brussels, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.17Brussels, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Brussels, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Brussels, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Brussels, Sunday, 8 November
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 Brussels, 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 Brussels, 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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