Weather in Joliet, IL
Joliet, Friday, 23 October, 23:27
Clear. Feels like 54°. High 72°, low 46°.
Monthly outlook for Joliet, IL: average high 65.9°, average low 49.3°. That is 5.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 29 October (74.8°), the coolest 4 November (41.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 69.8° | 57.5° | +6.8° |
| 2 November – 11 November | 59.4° | 52.6° | +3.7° |
| 12 November – 21 November | at normal | 47.7° | — |
October records over 66 years
0
Joliet, Saturday, 24 October
Overcast. High 70°, low 48°.
0Joliet, Sunday, 25 October
Overcast. High 73°, low 48°.
0Joliet, Monday, 26 October
Overcast. High 68°, low 49°.
0Joliet, Tuesday, 27 October
Overcast. High 66°, low 51°.
0Joliet, Wednesday, 28 October
Overcast. High 72°, low 54°.
0
Joliet, Thursday, 29 October
Partly cloudy. High 75°, low 54°.
0Joliet, Friday, 30 October
Overcast. High 70°, low 62°.
0.09
Joliet, Saturday, 31 October
Light rain. High 71°, low 58°.
0.06Joliet, Sunday, 1 November
Light rain. High 61°, low 49°.
0
Joliet, Monday, 2 November
Clear. High 55°, low 42°.
0Joliet, Tuesday, 3 November
Overcast. High 49°, low 43°.
0Joliet, Wednesday, 4 November
Overcast. High 53°, low 42°.
0Joliet, Thursday, 5 November
Overcast. High 63°, low 42°.
0
Joliet, Friday, 6 November
Mostly clear. High 72°, low 49°.
0Joliet, Saturday, 7 November
Overcast. High 64°, low 51°.
0.06Joliet, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13
Joliet, Monday, 9 November
Climate normal for this date — 60-year average.
0.13Joliet, 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.
0.06Joliet, 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.
0.08Joliet, 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.
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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