Weather in Brighton, IL
Brighton, Friday, 9 October, 03:24
Partly cloudy. Feels like 50°. High 89°, low 51°.
Monthly outlook for Brighton, IL: average high 72.8°, average low 52.9°. That is 4.1° above the climate normal for October. Precipitation is expected on 2 days (about 1.6 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 13 October (91.7°), the coolest 18 October (36.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 77.5° | 66.6° | +6° |
| 19 October – 28 October | 65.1° | 62.4° | +1.5° |
| 29 October – 7 November | at normal | 58.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Jerseyville (11 mi).
0
Brighton, Saturday, 10 October
Overcast. High 81°, low 55°.
0
Brighton, Sunday, 11 October
Clear. High 84°, low 61°.
0Brighton, Monday, 12 October
Clear. High 91°, low 67°.
0Brighton, Tuesday, 13 October
Clear. High 92°, low 71°.
1.14
Brighton, Wednesday, 14 October
Rain. High 81°, low 68°.
0.42Brighton, Thursday, 15 October
Rain. High 89°, low 63°.
0Brighton, Friday, 16 October
Overcast. High 60°, low 48°.
0Brighton, Saturday, 17 October
Overcast. High 51°, low 40°.
0Brighton, Sunday, 18 October
Clear. High 58°, low 37°.
0
Brighton, Monday, 19 October
Partly cloudy. High 65°, low 42°.
0.02Brighton, Tuesday, 20 October
Light rain. High 53°, low 46°.
0Brighton, Wednesday, 21 October
Clear. High 72°, low 50°.
0Brighton, Thursday, 22 October
Partly cloudy. High 73°, low 55°.
0Brighton, Friday, 23 October
Clear. High 64°, low 49°.
0Brighton, Saturday, 24 October
Clear. High 64°, low 42°.
0.13Brighton, Sunday, 25 October
Climate normal for this date — 60-year average.
0.14
Brighton, Monday, 26 October
Climate normal for this date — 60-year average.
0.09Brighton, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.04Brighton, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.11Brighton, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Brighton, Friday, 30 October
Climate normal for this date — 60-year average.
0.15Brighton, Saturday, 31 October
Climate normal for this date — 60-year average.
0.2Brighton, Sunday, 1 November
Climate normal for this date — 60-year average.
0.08Brighton, Monday, 2 November
Climate normal for this date — 60-year average.
0.11Brighton, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.15Brighton, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.16Brighton, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Brighton, Friday, 6 November
Climate normal for this date — 60-year average.
0.07
Brighton, Saturday, 7 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 Brighton, 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 Brighton, 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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