Weather in St. Jacob, IL
St. Jacob, Wednesday, 28 October, 15:53
Clear. Feels like 79°. High 79°, low 51°.
Monthly outlook for St. Jacob, IL: average high 63.1°, average low 50.2°. That is 2.6° above the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 28 October (79°), the coolest 12 November (32.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 68.2° | 59.8° | +4.7° |
| 7 November – 16 November | 54.5° | 54.8° | -0.2° |
| 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 (13 mi).
0St. Jacob, Thursday, 29 October
Clear. High 78°, low 53°.
0.28
St. Jacob, Friday, 30 October
Rain. High 74°, low 56°.
0
St. Jacob, Saturday, 31 October
Overcast. High 72°, low 60°.
0
St. Jacob, Sunday, 1 November
Mostly clear. High 73°, low 55°.
0.01St. Jacob, Monday, 2 November
Light rain. High 70°, low 55°.
0.63St. Jacob, Tuesday, 3 November
Rain. High 63°, low 60°.
0.48St. Jacob, Wednesday, 4 November
Rain. High 61°, low 59°.
0.2St. Jacob, Thursday, 5 November
Light rain. High 61°, low 52°.
0St. Jacob, Friday, 6 November
Mostly clear. High 53°, low 40°.
0St. Jacob, Saturday, 7 November
Overcast. High 55°, low 40°.
0St. Jacob, Sunday, 8 November
Overcast. High 63°, low 46°.
0.07St. Jacob, Monday, 9 November
Light rain. High 60°, low 57°.
0.01St. Jacob, Tuesday, 10 November
Light rain. High 57°, low 48°.
0St. Jacob, Wednesday, 11 November
Clear. High 46°, low 37°.
0St. Jacob, Thursday, 12 November
Overcast. High 46°, low 33°.
0.06
St. Jacob, Friday, 13 November
Climate normal for this date — 60-year average.
0.1St. Jacob, Saturday, 14 November
Climate normal for this date — 60-year average.
0.13St. Jacob, Sunday, 15 November
Climate normal for this date — 60-year average.
0.11St. Jacob, Monday, 16 November
Climate normal for this date — 60-year average.
0.12St. Jacob, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.17St. Jacob, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07St. Jacob, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1
St. Jacob, Friday, 20 November
Climate normal for this date — 60-year average.
0.1St. Jacob, Saturday, 21 November
Climate normal for this date — 60-year average.
0.09St. Jacob, Sunday, 22 November
Climate normal for this date — 60-year average.
0.1St. Jacob, Monday, 23 November
Climate normal for this date — 60-year average.
0.15St. Jacob, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.17St. Jacob, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.17St. Jacob, 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 St. Jacob, 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 St. Jacob, 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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