Weather in Saint Thomas, IL
Saint Thomas, Saturday, 17 October, 16:48
Clear. Feels like 57°. High 60°, low 41°.
Monthly outlook for Saint Thomas, IL: average high 72.6°, average low 54.2°. That is 5.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 1 November (80.8°), the coolest 17 October (40.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 17 October – 26 October | 71.6° | 64.1° | +4.2° |
| 27 October – 5 November | 74.2° | 60.2° | +7.7° |
| 6 November – 15 November | at normal | 55.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (7 mi).
0Saint Thomas, Sunday, 18 October
Clear. High 67°, low 44°.
0
Saint Thomas, Monday, 19 October
Overcast. High 65°, low 46°.
0Saint Thomas, Tuesday, 20 October
Clear. High 68°, low 48°.
0Saint Thomas, Wednesday, 21 October
Clear. High 71°, low 52°.
0Saint Thomas, Thursday, 22 October
Clear. High 72°, low 51°.
0
Saint Thomas, Friday, 23 October
Mostly clear. High 76°, low 53°.
0Saint Thomas, Saturday, 24 October
Overcast. High 78°, low 58°.
0Saint Thomas, Sunday, 25 October
Overcast. High 80°, low 62°.
0
Saint Thomas, Monday, 26 October
Light rain. High 80°, low 64°.
0.03Saint Thomas, Tuesday, 27 October
Light rain. High 63°, low 56°.
0
Saint Thomas, Wednesday, 28 October
Partly cloudy. High 69°, low 48°.
0.09Saint Thomas, Thursday, 29 October
Light rain. High 78°, low 58°.
0.19Saint Thomas, Friday, 30 October
Light rain. High 78°, low 64°.
0.61Saint Thomas, Saturday, 31 October
Heavy rain. High 75°, low 62°.
0.02Saint Thomas, Sunday, 1 November
Light rain. High 81°, low 60°.
0.08Saint Thomas, Monday, 2 November
Climate normal for this date — 60-year average.
0.11Saint Thomas, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.16Saint Thomas, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.16Saint Thomas, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09
Saint Thomas, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Saint Thomas, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Saint Thomas, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Saint Thomas, Monday, 9 November
Climate normal for this date — 60-year average.
0.13Saint Thomas, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.11Saint Thomas, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.09Saint Thomas, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Saint Thomas, Friday, 13 November
Climate normal for this date — 60-year average.
0.1Saint Thomas, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13Saint Thomas, Sunday, 15 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 Saint Thomas, 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 Saint Thomas, 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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