Weather in Keys, IL
Keys, Sunday, 11 October, 02:42
Clear. Feels like 53°. High 83°, low 52°.
Monthly outlook for Keys, IL: average high 67.3°, average low 48.9°. That is 1.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 13 October (89.6°), the coolest 18 October (30.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 68.2° | 64.9° | +1.8° |
| 21 October – 30 October | 65.8° | 61.2° | +2.6° |
| 31 October – 9 November | at normal | 56.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Springfield (4 mi).
0
Keys, Monday, 12 October
Clear. High 88°, low 61°.
0Keys, Tuesday, 13 October
Clear. High 90°, low 73°.
0.15
Keys, Wednesday, 14 October
Light rain. High 77°, low 68°.
0.31Keys, Thursday, 15 October
Rain. High 64°, low 58°.
0.22Keys, Friday, 16 October
Rain. High 60°, low 41°.
0Keys, Saturday, 17 October
Clear. High 45°, low 34°.
0
Keys, Sunday, 18 October
Partly cloudy. High 51°, low 31°.
0Keys, Monday, 19 October
Clear. High 60°, low 37°.
0Keys, Tuesday, 20 October
Clear. High 65°, low 41°.
0Keys, Wednesday, 21 October
Partly cloudy. High 70°, low 45°.
0Keys, Thursday, 22 October
Clear. High 70°, low 49°.
0
Keys, Friday, 23 October
Mostly clear. High 65°, low 46°.
0
Keys, Saturday, 24 October
Overcast. High 61°, low 50°.
0.07Keys, Sunday, 25 October
Light rain. High 55°, low 48°.
0.02Keys, Monday, 26 October
Light rain. High 74°, low 49°.
0.09Keys, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.05Keys, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.08Keys, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11
Keys, Friday, 30 October
Climate normal for this date — 60-year average.
0.17Keys, Saturday, 31 October
Climate normal for this date — 60-year average.
0.21Keys, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Keys, Monday, 2 November
Climate normal for this date — 60-year average.
0.12Keys, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.11Keys, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.16Keys, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Keys, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Keys, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Keys, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Keys, Monday, 9 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 Keys, 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 Keys, 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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