Weather in Chillicothe, IL
Chillicothe, Friday, 23 October, 07:45
Clear. Feels like 51°. High 75°, low 50°.
Monthly outlook for Chillicothe, IL: average high 64.2°, average low 47.7°. That is 4.3° above the climate normal for October. Precipitation is expected on 2 days (about 1.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 29 October (75.6°), the coolest 3 November (35.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 68.8° | 58° | +6° |
| 2 November – 11 November | 56.6° | 53° | +2° |
| 12 November – 21 November | at normal | 48.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Peoria (13 mi).
0
Chillicothe, Saturday, 24 October
Overcast. High 73°, low 49°.
0Chillicothe, Sunday, 25 October
Clear. High 73°, low 51°.
0Chillicothe, Monday, 26 October
Overcast. High 70°, low 52°.
0Chillicothe, Tuesday, 27 October
Overcast. High 68°, low 49°.
0.02
Chillicothe, Wednesday, 28 October
Light rain. High 72°, low 55°.
0Chillicothe, Thursday, 29 October
Overcast. High 76°, low 61°.
0.79Chillicothe, Friday, 30 October
Rain. High 68°, low 57°.
0.31Chillicothe, Saturday, 31 October
Rain. High 60°, low 55°.
0.01Chillicothe, Sunday, 1 November
Light rain. High 52°, low 44°.
0.01Chillicothe, Monday, 2 November
Light rain. High 50°, low 41°.
0Chillicothe, Tuesday, 3 November
Clear. High 54°, low 35°.
0Chillicothe, Wednesday, 4 November
Clear. High 57°, low 38°.
0Chillicothe, Thursday, 5 November
Clear. High 60°, low 41°.
0Chillicothe, Friday, 6 November
Overcast. High 59°, low 42°.
0Chillicothe, Saturday, 7 November
Overcast. High 59°, low 43°.
0.05
Chillicothe, Sunday, 8 November
Climate normal for this date — 60-year average.
0.14
Chillicothe, Monday, 9 November
Climate normal for this date — 60-year average.
0.15Chillicothe, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Chillicothe, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Chillicothe, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06
Chillicothe, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Chillicothe, 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.
0.14Chillicothe, 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.
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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