Weather in Joliet, IL
Joliet, Monday, 26 October, 19:00
Clear. Feels like 56°. High 65°, low 50°.
Monthly outlook for Joliet, IL: average high 60.2°, average low 48.5°. That is 3° above the climate normal for October. Precipitation is expected on 6 days (about 2.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 28 October (72°), the coolest 6 November (37.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 63.8° | 56.1° | +4.2° |
| 5 November – 14 November | 54.3° | 50.8° | +2° |
| 15 November – 24 November | at normal | 46.8° | — |
October records over 66 years
0
Joliet, Tuesday, 27 October
Overcast. High 69°, low 49°.
0
Joliet, Wednesday, 28 October
Mostly clear. High 72°, low 52°.
0.04
Joliet, Thursday, 29 October
Light rain. High 69°, low 58°.
0Joliet, Friday, 30 October
Overcast. High 67°, low 47°.
0.45Joliet, Saturday, 31 October
Rain. High 69°, low 55°.
0.03Joliet, Sunday, 1 November
Light rain. High 62°, low 58°.
0Joliet, Monday, 2 November
Overcast. High 60°, low 54°.
1.43Joliet, Tuesday, 3 November
Heavy rain. High 58°, low 47°.
0.15Joliet, Wednesday, 4 November
Light rain. High 47°, low 45°.
0.01Joliet, Thursday, 5 November
Light rain. High 49°, low 41°.
0Joliet, Friday, 6 November
Mostly clear. High 52°, low 38°.
0
Joliet, Saturday, 7 November
Clear. High 56°, low 39°.
0.04Joliet, Sunday, 8 November
Light rain. High 57°, low 49°.
0Joliet, Monday, 9 November
Overcast. High 60°, low 49°.
0.07Joliet, Tuesday, 10 November
Light rain. High 52°, low 44°.
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.
0.08
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.
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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