Weather in Saint Thomas, IL
Saint Thomas, Friday, 30 October, 21:26
Partly cloudy. Feels like 65°. High 75°, low 57°.
Monthly outlook for Saint Thomas, IL: average high 71.5°, average low 59.7°. That is 7.9° above the climate normal for October. Precipitation is expected on 7 days (about 2.4 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 12 November (78.1°), the coolest 14 November (54.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 30 October – 8 November | 71.6° | 59° | +7° |
| 9 November – 18 November | 71.4° | 54.2° | +9.6° |
| 19 November – 28 November | at normal | 50.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Edwardsville (7 mi).
0
Saint Thomas, Saturday, 31 October
Overcast. High 69°, low 61°.
0Saint Thomas, Sunday, 1 November
Overcast. High 67°, low 58°.
0Saint Thomas, Monday, 2 November
Overcast. High 70°, low 58°.
0.41
Saint Thomas, Tuesday, 3 November
Rain. High 70°, low 65°.
0.61Saint Thomas, Wednesday, 4 November
Rain. High 69°, low 62°.
0
Saint Thomas, Thursday, 5 November
Partly cloudy. High 74°, low 58°.
0Saint Thomas, Friday, 6 November
Partly cloudy. High 74°, low 56°.
0Saint Thomas, Saturday, 7 November
Overcast. High 73°, low 58°.
0.04Saint Thomas, Sunday, 8 November
Light rain. High 74°, low 61°.
0.06Saint Thomas, Monday, 9 November
Light rain. High 73°, low 64°.
0.84Saint Thomas, Tuesday, 10 November
Rain. High 72°, low 64°.
0
Saint Thomas, Wednesday, 11 November
Clear. High 74°, low 59°.
0.12Saint Thomas, Thursday, 12 November
Light rain. High 78°, low 61°.
0.35Saint Thomas, Friday, 13 November
Light rain. High 69°, low 59°.
0Saint Thomas, Saturday, 14 November
Overcast. High 62°, low 54°.
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.
0.21Saint Thomas, Friday, 27 November
Climate normal for this date — 60-year average.
0.11Saint Thomas, Saturday, 28 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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