Weather in Fairmont, IL
Fairmont, Tuesday, 20 October, 18:23
Clear. Feels like 60°. High 69°, low 42°.
Monthly outlook for Fairmont, IL: average high 60.3°, average low 44.2°. That is 1.6° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 21 October (71.9°), the coolest 30 October (33.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 63.4° | 58.6° | +2.7° |
| 30 October – 8 November | 55.1° | 54.5° | +0.3° |
| 9 November – 18 November | at normal | 49° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Joliet (6 mi).
0
Fairmont, Wednesday, 21 October
Clear. High 72°, low 43°.
0
Fairmont, Thursday, 22 October
Partly cloudy. High 70°, low 47°.
0Fairmont, Friday, 23 October
Clear. High 67°, low 51°.
0Fairmont, Saturday, 24 October
Partly cloudy. High 67°, low 49°.
0
Fairmont, Sunday, 25 October
Overcast. High 70°, low 52°.
0Fairmont, Monday, 26 October
Overcast. High 70°, low 54°.
0.23
Fairmont, Tuesday, 27 October
Light rain. High 53°, low 48°.
0.39Fairmont, Wednesday, 28 October
Light rain. High 49°, low 40°.
0Fairmont, Thursday, 29 October
Clear. High 47°, low 35°.
0
Fairmont, Friday, 30 October
Mostly clear. High 49°, low 33°.
0.01Fairmont, Saturday, 31 October
Light rain. High 54°, low 40°.
0.18Fairmont, Sunday, 1 November
Light rain. High 64°, low 52°.
0.29Fairmont, Monday, 2 November
Light rain. High 62°, low 43°.
0Fairmont, Tuesday, 3 November
Clear. High 51°, low 37°.
0Fairmont, Wednesday, 4 November
Overcast. High 51°, low 40°.
0.11Fairmont, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Fairmont, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Fairmont, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Fairmont, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13
Fairmont, Monday, 9 November
Climate normal for this date — 60-year average.
0.13Fairmont, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Fairmont, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Fairmont, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Fairmont, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Fairmont, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Fairmont, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Fairmont, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Fairmont, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.15Fairmont, Wednesday, 18 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 Fairmont, 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 Fairmont, 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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