Weather in Piasa, IL
Piasa, Tuesday, 27 October, 10:30
Overcast. Feels like 67°. High 71°, low 50°.
Monthly outlook for Piasa, IL: average high 63.4°, average low 51.1°. That is 3.1° above the climate normal for October. Precipitation is expected on 7 days (about 2.8 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 28 October (77.9°), the coolest 11 November (33.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 68.6° | 59.2° | +5.2° |
| 6 November – 15 November | 54.8° | 54.2° | +0.3° |
| 16 November – 25 November | at normal | 51° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Jerseyville (11 mi).
0
Piasa, Wednesday, 28 October
Clear. High 78°, low 51°.
0
Piasa, Thursday, 29 October
Mostly clear. High 77°, low 54°.
0.07
Piasa, Friday, 30 October
Light rain. High 72°, low 58°.
0Piasa, Saturday, 31 October
Overcast. High 70°, low 61°.
0.06Piasa, Sunday, 1 November
Light rain. High 67°, low 61°.
0.03Piasa, Monday, 2 November
Light rain. High 71°, low 59°.
0.37Piasa, Tuesday, 3 November
Rain. High 60°, low 59°.
1.03Piasa, Wednesday, 4 November
Heavy rain. High 58°, low 54°.
0.81Piasa, Thursday, 5 November
Rain. High 62°, low 55°.
0.05Piasa, Friday, 6 November
Light rain. High 53°, low 49°.
0Piasa, Saturday, 7 November
Mostly clear. High 58°, low 46°.
0Piasa, Sunday, 8 November
Overcast. High 61°, low 43°.
0.34Piasa, Monday, 9 November
Rain. High 56°, low 48°.
0Piasa, Tuesday, 10 November
Clear. High 52°, low 39°.
0
Piasa, Wednesday, 11 November
Partly cloudy. High 49°, low 33°.
0.08Piasa, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Piasa, Friday, 13 November
Climate normal for this date — 60-year average.
0.08Piasa, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12Piasa, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1Piasa, Monday, 16 November
Climate normal for this date — 60-year average.
0.13Piasa, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.16
Piasa, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Piasa, Thursday, 19 November
Climate normal for this date — 60-year average.
0.11Piasa, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Piasa, Saturday, 21 November
Climate normal for this date — 60-year average.
0.08Piasa, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Piasa, Monday, 23 November
Climate normal for this date — 60-year average.
0.13Piasa, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.13Piasa, Wednesday, 25 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 Piasa, 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 Piasa, 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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