Weather in Joliet, IL
Joliet, Wednesday, 28 October, 18:58
Clear. Feels like 68°. High 76°, low 52°.
Monthly outlook for Joliet, IL: average high 56.2°, average low 45.5°. That is 1.4° above the climate normal for October. Precipitation is expected on 8 days (about 3.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 28 October (75.7°), the coolest 12 November (29.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 62.7° | 55.4° | +4.1° |
| 7 November – 16 November | 45.3° | 49.7° | -2.5° |
| 17 November – 26 November | at normal | 46.1° | — |
October records over 66 years
0.06
Joliet, Thursday, 29 October
Light rain. High 68°, low 51°.
0.14Joliet, Friday, 30 October
Rain. High 64°, low 46°.
0.84Joliet, Saturday, 31 October
Heavy rain. High 61°, low 52°.
0
Joliet, Sunday, 1 November
Overcast. High 68°, low 55°.
0.04Joliet, Monday, 2 November
Light rain. High 67°, low 53°.
0.54Joliet, Tuesday, 3 November
Light rain. High 61°, low 58°.
0.54Joliet, Wednesday, 4 November
Rain. High 58°, low 56°.
0.49Joliet, Thursday, 5 November
Rain. High 58°, low 49°.
0
Joliet, Friday, 6 November
Clear. High 46°, low 37°.
0Joliet, Saturday, 7 November
Clear. High 47°, low 33°.
0.42Joliet, Sunday, 8 November
Rain. High 45°, low 40°.
0.1Joliet, Monday, 9 November
Light rain. High 50°, low 44°.
0.01Joliet, Tuesday, 10 November
Light rain. High 47°, low 40°.
0
Joliet, Wednesday, 11 November
Mostly clear. High 41°, low 32°.
0Joliet, Thursday, 12 November
Mostly clear. High 42°, low 30°.
0.06Joliet, Friday, 13 November
Climate normal for this date — 60-year average.
0.07
Joliet, 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.
0.08
Joliet, 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.
0.08Joliet, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.08Joliet, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.12Joliet, 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 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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