Weather in Illiana, IL
Illiana, Thursday, 29 October, 21:57
Clear. Feels like 59°. High 75°, low 57°.
Monthly outlook for Illiana, IL: average high 60°, average low 49.4°. That is 2.8° above the climate normal for October. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 29 October (74.8°), the coolest 11 November (39.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 66.3° | 56.8° | +5.3° |
| 8 November – 17 November | 49.6° | 51.1° | -0.8° |
| 18 November – 27 November | at normal | 47.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Pence (12 mi).
0
Illiana, Friday, 30 October
Partly cloudy. High 71°, low 50°.
0.02
Illiana, Saturday, 31 October
Light rain. High 68°, low 52°.
0
Illiana, Sunday, 1 November
Overcast. High 67°, low 56°.
0Illiana, Monday, 2 November
Overcast. High 63°, low 57°.
0.06Illiana, Tuesday, 3 November
Light rain. High 74°, low 61°.
0.07Illiana, Wednesday, 4 November
Light rain. High 65°, low 61°.
0.35Illiana, Thursday, 5 November
Light rain. High 61°, low 52°.
0.09Illiana, Friday, 6 November
Light rain. High 60°, low 49°.
0Illiana, Saturday, 7 November
Partly cloudy. High 59°, low 43°.
0Illiana, Sunday, 8 November
Overcast. High 55°, low 43°.
0.84Illiana, Monday, 9 November
Heavy rain. High 49°, low 44°.
0Illiana, Tuesday, 10 November
Overcast. High 46°, low 40°.
0Illiana, Wednesday, 11 November
Overcast. High 49°, low 40°.
0.42Illiana, Thursday, 12 November
Rain. High 44°, low 41°.
0.01Illiana, Friday, 13 November
Light rain. High 56°, low 45°.
0.1Illiana, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13
Illiana, Sunday, 15 November
Climate normal for this date — 60-year average.
0.09Illiana, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Illiana, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.14Illiana, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Illiana, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Illiana, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Illiana, Saturday, 21 November
Climate normal for this date — 60-year average.
0.08Illiana, Sunday, 22 November
Climate normal for this date — 60-year average.
0.11Illiana, Monday, 23 November
Climate normal for this date — 60-year average.
0.1Illiana, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.16Illiana, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.13Illiana, Thursday, 26 November
Climate normal for this date — 60-year average.
0.23Illiana, 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 Illiana, 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 Illiana, 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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