Weather in Joliet, IL
Joliet, Sunday, 25 October, 05:39
Clear. Feels like 47°. High 72°, low 49°.
Monthly outlook for Joliet, IL: average high 64.2°, average low 49.5°. That is 5° above the climate normal for October. Precipitation is expected on 4 days (about 2.3 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (72.3°), the coolest 8 November (35.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 69.2° | 56.5° | +7° |
| 4 November – 13 November | 55.9° | 51.3° | +2.6° |
| 14 November – 23 November | at normal | 47.3° | — |
October records over 66 years
0
Joliet, Monday, 26 October
Overcast. High 68°, low 49°.
0Joliet, Tuesday, 27 October
Overcast. High 70°, low 51°.
0.01
Joliet, Wednesday, 28 October
Light rain. High 72°, low 53°.
0.04Joliet, Thursday, 29 October
Light rain. High 72°, low 56°.
0.03Joliet, Friday, 30 October
Light rain. High 71°, low 54°.
0Joliet, Saturday, 31 October
Overcast. High 72°, low 59°.
0.21Joliet, Sunday, 1 November
Light rain. High 63°, low 59°.
0.67Joliet, Monday, 2 November
Rain. High 68°, low 59°.
1.11Joliet, Tuesday, 3 November
Heavy rain. High 64°, low 47°.
0Joliet, Wednesday, 4 November
Overcast. High 52°, low 46°.
0Joliet, Thursday, 5 November
Overcast. High 56°, low 43°.
0Joliet, Friday, 6 November
Overcast. High 58°, low 45°.
0Joliet, Saturday, 7 November
Overcast. High 55°, low 41°.
0
Joliet, Sunday, 8 November
Mostly clear. High 54°, low 36°.
0.2Joliet, Monday, 9 November
Rain. High 60°, low 46°.
0.13
Joliet, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07
Joliet, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Joliet, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Joliet, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Joliet, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Joliet, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Joliet, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Joliet, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.15Joliet, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Joliet, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Joliet, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Joliet, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Joliet, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Joliet, Monday, 23 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 Joliet, 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 Joliet, 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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