Weather in Tonica, IL
Tonica, Tuesday, 20 October, 07:10
Partly cloudy. Feels like 44°. High 71°, low 44°.
Monthly outlook for Tonica, IL: average high 59.6°, average low 41.2°. That is 0.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (73.3°), the coolest 28 October (26.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 63.5° | 59.4° | +2.3° |
| 30 October – 8 November | 53.1° | 55.3° | -1.2° |
| 9 November – 18 November | at normal | 49.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Toluca (15 mi).
0
Tonica, Wednesday, 21 October
Clear. High 72°, low 42°.
0Tonica, Thursday, 22 October
Clear. High 70°, low 48°.
0
Tonica, Friday, 23 October
Partly cloudy. High 69°, low 49°.
0Tonica, Saturday, 24 October
Partly cloudy. High 69°, low 49°.
0
Tonica, Sunday, 25 October
Overcast. High 73°, low 54°.
0.08
Tonica, Monday, 26 October
Light rain. High 69°, low 48°.
0Tonica, Tuesday, 27 October
Overcast. High 51°, low 37°.
0Tonica, Wednesday, 28 October
Clear. High 41°, low 27°.
0Tonica, Thursday, 29 October
Clear. High 50°, low 29°.
0Tonica, Friday, 30 October
Overcast. High 53°, low 42°.
0Tonica, Saturday, 31 October
Clear. High 54°, low 42°.
0Tonica, Sunday, 1 November
Overcast. High 52°, low 38°.
0Tonica, Monday, 2 November
Overcast. High 51°, low 36°.
0Tonica, Tuesday, 3 November
Overcast. High 52°, low 35°.
0Tonica, Wednesday, 4 November
Overcast. High 56°, low 40°.
0.11Tonica, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Tonica, Friday, 6 November
Climate normal for this date — 60-year average.
0.04
Tonica, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05Tonica, Sunday, 8 November
Climate normal for this date — 60-year average.
0.14
Tonica, Monday, 9 November
Climate normal for this date — 60-year average.
0.14Tonica, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Tonica, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Tonica, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Tonica, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Tonica, Saturday, 14 November
Climate normal for this date — 60-year average.
0.08Tonica, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Tonica, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Tonica, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.12Tonica, 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 Tonica, 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 Tonica, 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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