Weather in Joliet, IL
Joliet, Sunday, 25 October, 10:11
Clear. Feels like 60°. High 71°, low 50°.
Monthly outlook for Joliet, IL: average high 62.9°, average low 50.8°. That is 4.3° above the climate normal for October. Precipitation is expected on 6 days (about 1.3 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (71.3°), the coolest 9 November (40.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 67.5° | 56.5° | +6.1° |
| 4 November – 13 November | 55.2° | 51.3° | +2.2° |
| 14 November – 23 November | at normal | 47.3° | — |
October records over 66 years
0
Joliet, Monday, 26 October
Overcast. High 68°, low 50°.
0Joliet, Tuesday, 27 October
Overcast. High 67°, low 50°.
0Joliet, Wednesday, 28 October
Overcast. High 69°, low 52°.
0.56
Joliet, Thursday, 29 October
Rain. High 70°, low 56°.
0.01Joliet, Friday, 30 October
Light rain. High 66°, low 53°.
0.12Joliet, Saturday, 31 October
Light rain. High 67°, low 54°.
0.35Joliet, Sunday, 1 November
Light rain. High 59°, low 59°.
0Joliet, Monday, 2 November
Overcast. High 68°, low 58°.
0.08Joliet, Tuesday, 3 November
Light rain. High 69°, low 56°.
0
Joliet, Wednesday, 4 November
Partly cloudy. High 57°, low 49°.
0Joliet, Thursday, 5 November
Overcast. High 53°, low 46°.
0Joliet, Friday, 6 November
Partly cloudy. High 55°, low 45°.
0Joliet, Saturday, 7 November
Light rain. High 60°, low 43°.
0.11Joliet, Sunday, 8 November
Light rain. High 56°, low 51°.
0.09Joliet, Monday, 9 November
Light rain. High 50°, low 40°.
0.13
Joliet, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.07Joliet, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Joliet, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06
Joliet, 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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