Weather in Chillicothe, IL
Chillicothe, Wednesday, 28 October, 01:55
Overcast. Feels like 58°. High 75°, low 55°.
Monthly outlook for Chillicothe, IL: average high 59°, average low 46°. That is 2.7° above the climate normal for October. Precipitation is expected on 6 days (about 2.7 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 28 October (75.2°), the coolest 12 November (27.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 64.8° | 55.8° | +5° |
| 7 November – 16 November | 49.3° | 50.3° | -0.5° |
| 17 November – 26 November | at normal | 46.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Peoria (13 mi).
0.05
Chillicothe, Thursday, 29 October
Light rain. High 70°, low 52°.
0.03Chillicothe, Friday, 30 October
Light rain. High 68°, low 46°.
0.04Chillicothe, Saturday, 31 October
Light rain. High 70°, low 55°.
0Chillicothe, Sunday, 1 November
Overcast. High 72°, low 51°.
0.02Chillicothe, Monday, 2 November
Light rain. High 63°, low 57°.
1.52Chillicothe, Tuesday, 3 November
Rain. High 61°, low 48°.
0Chillicothe, Wednesday, 4 November
Light rain. High 57°, low 46°.
0Chillicothe, Thursday, 5 November
Overcast. High 58°, low 51°.
0.09Chillicothe, Friday, 6 November
Light rain. High 53°, low 47°.
0.02Chillicothe, Saturday, 7 November
Light rain. High 49°, low 43°.
0
Chillicothe, Sunday, 8 November
Clear. High 47°, low 35°.
0Chillicothe, Monday, 9 November
Overcast. High 53°, low 35°.
0.18Chillicothe, Tuesday, 10 November
Light rain. High 53°, low 51°.
0.72Chillicothe, Wednesday, 11 November
Heavy rain. High 54°, low 38°.
0Chillicothe, Thursday, 12 November
Clear. High 39°, low 28°.
0.06
Chillicothe, Friday, 13 November
Climate normal for this date — 60-year average.
0.07
Chillicothe, Saturday, 14 November
Climate normal for this date — 60-year average.
0.07Chillicothe, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Chillicothe, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Chillicothe, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.14
Chillicothe, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Chillicothe, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Chillicothe, Friday, 20 November
Climate normal for this date — 60-year average.
0.09Chillicothe, Saturday, 21 November
Climate normal for this date — 60-year average.
0.05Chillicothe, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07Chillicothe, Monday, 23 November
Climate normal for this date — 60-year average.
0.09Chillicothe, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.07Chillicothe, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.14Chillicothe, Thursday, 26 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 Chillicothe, 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 Chillicothe, 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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