Weather in Joliet, IL
Joliet, Tuesday, 27 October, 12:03
Overcast. Feels like 65°. High 67°, low 51°.
Monthly outlook for Joliet, IL: average high 59.5°, average low 48.5°. That is 2.9° above the climate normal for October. Precipitation is expected on 4 days (about 1.6 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 28 October (72.4°), the coolest 11 November (29.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 64° | 55.8° | +4.6° |
| 6 November – 15 November | 52° | 50.3° | +1° |
| 16 November – 25 November | at normal | 46.4° | — |
October records over 66 years
0
Joliet, Wednesday, 28 October
Mostly clear. High 72°, low 56°.
0.02
Joliet, Thursday, 29 October
Light rain. High 69°, low 52°.
0Joliet, Friday, 30 October
Light rain. High 66°, low 45°.
0.32Joliet, Saturday, 31 October
Rain. High 66°, low 53°.
0Joliet, Sunday, 1 November
Overcast. High 69°, low 51°.
0Joliet, Monday, 2 November
Overcast. High 60°, low 56°.
0Joliet, Tuesday, 3 November
Overcast. High 59°, low 56°.
0.31Joliet, Wednesday, 4 November
Rain. High 56°, low 53°.
0.71Joliet, Thursday, 5 November
Rain. High 56°, low 54°.
0.02Joliet, Friday, 6 November
Light rain. High 53°, low 50°.
0.01Joliet, Saturday, 7 November
Light rain. High 55°, low 46°.
0Joliet, Sunday, 8 November
Overcast. High 57°, low 42°.
0.25Joliet, Monday, 9 November
Rain. High 57°, low 47°.
0Joliet, Tuesday, 10 November
Overcast. High 47°, low 37°.
0Joliet, Wednesday, 11 November
Overcast. High 42°, low 29°.
0.07
Joliet, 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.
0.08Joliet, Wednesday, 25 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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