Weather in Illiana, IL
Illiana, Friday, 30 October, 09:39
Clear. Feels like 54°. High 68°, low 48°.
Monthly outlook for Illiana, IL: average high 58.4°, average low 47.1°. That is 2.2° above the climate normal for October. Precipitation is expected on 6 days (about 2.1 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 3 November (71.3°), the coolest 12 November (35.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 30 October – 8 November | 64.1° | 56.3° | +4.3° |
| 9 November – 18 November | 48.9° | 50.7° | -1° |
| 19 November – 28 November | at normal | 46.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Pence (12 mi).
0
Illiana, Saturday, 31 October
Overcast. High 70°, low 52°.
0Illiana, Sunday, 1 November
Overcast. High 70°, low 56°.
0Illiana, Monday, 2 November
Overcast. High 68°, low 57°.
0.3
Illiana, Tuesday, 3 November
Rain. High 71°, low 63°.
0.49Illiana, Wednesday, 4 November
Rain. High 65°, low 60°.
0.01Illiana, Thursday, 5 November
Light rain. High 65°, low 54°.
0Illiana, Friday, 6 November
Overcast. High 56°, low 51°.
0Illiana, Saturday, 7 November
Overcast. High 55°, low 43°.
0
Illiana, Sunday, 8 November
Partly cloudy. High 51°, low 37°.
0.05Illiana, Monday, 9 November
Light rain. High 49°, low 40°.
0.86Illiana, Tuesday, 10 November
Rain. High 42°, low 41°.
0Illiana, Wednesday, 11 November
Clear. High 49°, low 36°.
0Illiana, Thursday, 12 November
Clear. High 52°, low 35°.
0.15Illiana, Friday, 13 November
Light rain. High 50°, low 39°.
0.2Illiana, Saturday, 14 November
Light rain. High 50°, low 42°.
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.
0.13Illiana, 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 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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