Weather in Summerville, IL
Summerville, Sunday, 1 November, 14:21
Overcast. Feels like 63°. High 64°, low 59°.
Monthly outlook for Summerville, IL: average high 66.5°, average low 51.5°. That is 6.3° above the climate normal for November. Precipitation is expected on 2 days (about 1.8 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 16 November (77.7°), the coolest 13 November (41.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 1 November – 10 November | 64.9° | 56.9° | +4.5° |
| 11 November – 20 November | 69.2° | 52.4° | +9.3° |
| 21 November – 30 November | at normal | 48.1° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Jerseyville (12 mi).
0Summerville, Monday, 2 November
Overcast. High 72°, low 59°.
1.61
Summerville, Tuesday, 3 November
Heavy rain. High 71°, low 64°.
0Summerville, Wednesday, 4 November
Overcast. High 63°, low 55°.
0
Summerville, Thursday, 5 November
Partly cloudy. High 60°, low 51°.
0Summerville, Friday, 6 November
Overcast. High 59°, low 51°.
0
Summerville, Saturday, 7 November
Mostly clear. High 64°, low 46°.
0Summerville, Sunday, 8 November
Mostly clear. High 64°, low 42°.
0
Summerville, Monday, 9 November
Clear. High 67°, low 44°.
0Summerville, Tuesday, 10 November
Overcast. High 66°, low 45°.
0Summerville, Wednesday, 11 November
Overcast. High 70°, low 53°.
0Summerville, Thursday, 12 November
Mostly clear. High 58°, low 45°.
0Summerville, Friday, 13 November
Clear. High 67°, low 42°.
0.15Summerville, Saturday, 14 November
Light rain. High 69°, low 50°.
0Summerville, Sunday, 15 November
Overcast. High 73°, low 57°.
0Summerville, Monday, 16 November
Partly cloudy. High 78°, low 61°.
0.13Summerville, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.16
Summerville, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Summerville, Thursday, 19 November
Climate normal for this date — 60-year average.
0.11Summerville, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Summerville, Saturday, 21 November
Climate normal for this date — 60-year average.
0.08Summerville, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Summerville, Monday, 23 November
Climate normal for this date — 60-year average.
0.13Summerville, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.13Summerville, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.15Summerville, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Summerville, Friday, 27 November
Climate normal for this date — 60-year average.
0.09Summerville, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Summerville, Sunday, 29 November
Climate normal for this date — 60-year average.
0.17Summerville, Monday, 30 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 Summerville, 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 Summerville, 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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