Weather in Joliet, IL
Joliet, Friday, 30 October, 09:28
Overcast. Feels like 51°. High 57°, low 45°.
Monthly outlook for Joliet, IL: average high 56.4°, average low 47.6°. That is 2.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 3 November (72.5°), the coolest 12 November (36.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 30 October – 8 November | 60.6° | 54.5° | +3.4° |
| 9 November – 18 November | 49.3° | 49° | +0.2° |
| 19 November – 28 November | at normal | 44.8° | — |
October records over 66 years
0.16
Joliet, Saturday, 31 October
Rain. High 67°, low 51°.
0Joliet, Sunday, 1 November
Overcast. High 67°, low 55°.
0Joliet, Monday, 2 November
Overcast. High 65°, low 56°.
0Joliet, Tuesday, 3 November
Overcast. High 73°, low 63°.
0.54Joliet, Wednesday, 4 November
Rain. High 66°, low 59°.
0.05Joliet, Thursday, 5 November
Light rain. High 59°, low 53°.
0Joliet, Friday, 6 November
Overcast. High 53°, low 48°.
0
Joliet, Saturday, 7 November
Partly cloudy. High 52°, low 44°.
0Joliet, Sunday, 8 November
Overcast. High 48°, low 39°.
0Joliet, Monday, 9 November
Light rain. High 48°, low 43°.
0Joliet, Tuesday, 10 November
Overcast. High 47°, low 43°.
0
Joliet, Wednesday, 11 November
Clear. High 50°, low 38°.
0Joliet, Thursday, 12 November
Clear. High 51°, low 37°.
0.25Joliet, Friday, 13 November
Rain. High 48°, low 42°.
0.12Joliet, Saturday, 14 November
Light rain. High 51°, low 46°.
0.09Joliet, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05
Joliet, 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.
0.22Joliet, Friday, 27 November
Climate normal for this date — 60-year average.
0.13Joliet, Saturday, 28 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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