Weather in Saint Thomas, IL
Saint Thomas, Wednesday, 28 October, 13:54
Clear. Feels like 78°. High 78°, low 51°.
Monthly outlook for Saint Thomas, IL: average high 63.7°, average low 52.6°. That is 3° above the climate normal for October. Precipitation is expected on 6 days (about 3.2 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 29 October (78.9°), the coolest 8 November (42.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 69.6° | 59.8° | +5.4° |
| 7 November – 16 November | 53.9° | 54.8° | -0.5° |
| 17 November – 26 November | at normal | 51.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (7 mi).
0Saint Thomas, Thursday, 29 October
Clear. High 79°, low 53°.
0
Saint Thomas, Friday, 30 October
Overcast. High 76°, low 56°.
0.01
Saint Thomas, Saturday, 31 October
Light rain. High 69°, low 60°.
0
Saint Thomas, Sunday, 1 November
Mostly clear. High 72°, low 59°.
0.03Saint Thomas, Monday, 2 November
Light rain. High 70°, low 58°.
0.16Saint Thomas, Tuesday, 3 November
Rain. High 66°, low 63°.
1Saint Thomas, Wednesday, 4 November
Heavy rain. High 64°, low 62°.
0.72Saint Thomas, Thursday, 5 November
Rain. High 62°, low 58°.
0Saint Thomas, Friday, 6 November
Overcast. High 60°, low 50°.
0Saint Thomas, Saturday, 7 November
Overcast. High 56°, low 45°.
0Saint Thomas, Sunday, 8 November
Overcast. High 55°, low 43°.
0.41Saint Thomas, Monday, 9 November
Rain. High 56°, low 43°.
0.73Saint Thomas, Tuesday, 10 November
Rain. High 57°, low 52°.
0.16Saint Thomas, Wednesday, 11 November
Light rain. High 51°, low 44°.
0Saint Thomas, Thursday, 12 November
Overcast. High 47°, low 43°.
0.06
Saint 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.
0.11Saint Thomas, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Saint Thomas, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.17Saint Thomas, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Saint Thomas, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1
Saint Thomas, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Saint Thomas, Saturday, 21 November
Climate normal for this date — 60-year average.
0.09Saint Thomas, Sunday, 22 November
Climate normal for this date — 60-year average.
0.1Saint Thomas, Monday, 23 November
Climate normal for this date — 60-year average.
0.15Saint Thomas, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.17Saint Thomas, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.17Saint Thomas, Thursday, 26 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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