Weather in Piasa, IL
Piasa, Sunday, 15 November, 15:31
Clear. Feels like 48°. High 52°, low 26°.
Monthly outlook for Piasa, IL: average high 55.3°, average low 40°. That is 3.1° above the climate normal for November. Precipitation is expected on 6 days (about 3.0 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 21 November (67.8°), the coolest 15 November (26.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 58.3° | 51.4° | +3.9° |
| 25 November – 4 December | 50.4° | 46.3° | +2.3° |
| 5 December – 14 December | at normal | 42.4° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Jerseyville (11 mi).
0Piasa, Monday, 16 November
Clear. High 55°, low 28°.
0Piasa, Tuesday, 17 November
Clear. High 56°, low 29°.
0
Piasa, Wednesday, 18 November
Overcast. High 59°, low 39°.
0Piasa, Thursday, 19 November
Clear. High 65°, low 46°.
0Piasa, Friday, 20 November
Clear. High 67°, low 47°.
0Piasa, Saturday, 21 November
Clear. High 68°, low 51°.
0
Piasa, Sunday, 22 November
Partly cloudy. High 58°, low 42°.
0Piasa, Monday, 23 November
Overcast. High 54°, low 37°.
0.15
Piasa, Tuesday, 24 November
Light rain. High 50°, low 36°.
0.07Piasa, Wednesday, 25 November
Light rain. High 54°, low 48°.
1.07Piasa, Thursday, 26 November
Heavy rain. High 58°, low 51°.
0.37Piasa, Friday, 27 November
Rain. High 49°, low 41°.
0Piasa, Saturday, 28 November
Partly cloudy. High 51°, low 40°.
0.93Piasa, Sunday, 29 November
Rain. High 46°, low 43°.
0.35
Piasa, Monday, 30 November
Snow. High 44°, low 35°.
0.11Piasa, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.08Piasa, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.11Piasa, Thursday, 3 December
Climate normal for this date — 60-year average.
0.08Piasa, Friday, 4 December
Climate normal for this date — 60-year average.
0.08Piasa, Saturday, 5 December
Climate normal for this date — 60-year average.
0.06
Piasa, Sunday, 6 December
Climate normal for this date — 60-year average.
0.1Piasa, Monday, 7 December
Climate normal for this date — 60-year average.
0.07Piasa, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.07Piasa, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.11Piasa, Thursday, 10 December
Climate normal for this date — 60-year average.
0.09Piasa, Friday, 11 December
Climate normal for this date — 60-year average.
0.07Piasa, Saturday, 12 December
Climate normal for this date — 60-year average.
0.07Piasa, Sunday, 13 December
Climate normal for this date — 60-year average.
0.12Piasa, Monday, 14 December
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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