Weather in Joliet, IL
Joliet, Thursday, 29 October, 12:11
Overcast. Feels like 67°. High 68°, low 54°.
Monthly outlook for Joliet, IL: average high 60°, average low 48.7°. That is 3.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 4 November (72°), the coolest 7 November (34.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 63.2° | 54.9° | +4.6° |
| 8 November – 17 November | 54.8° | 49.3° | +3° |
| 18 November – 27 November | at normal | 45.6° | — |
October records over 66 years
0.09
Joliet, Friday, 30 October
Rain. High 65°, low 48°.
0.85Joliet, Saturday, 31 October
Heavy rain. High 57°, low 51°.
0Joliet, Sunday, 1 November
Overcast. High 63°, low 53°.
0.01Joliet, Monday, 2 November
Light rain. High 63°, low 54°.
0.12Joliet, Tuesday, 3 November
Light rain. High 71°, low 60°.
0.02Joliet, Wednesday, 4 November
Light rain. High 72°, low 64°.
0.11Joliet, Thursday, 5 November
Light rain. High 65°, low 58°.
0.24Joliet, Friday, 6 November
Light rain. High 57°, low 40°.
0
Joliet, Saturday, 7 November
Partly cloudy. High 51°, low 34°.
0Joliet, Sunday, 8 November
Overcast. High 51°, low 39°.
0Joliet, Monday, 9 November
Overcast. High 48°, low 45°.
0Joliet, Tuesday, 10 November
Light rain. High 53°, low 44°.
0
Joliet, Wednesday, 11 November
Clear. High 57°, low 41°.
0Joliet, Thursday, 12 November
Overcast. High 58°, low 44°.
0.01Joliet, Friday, 13 November
Light rain. High 61°, low 52°.
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.
0.05
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.
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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