As of 00:25 CDT

Weather in St. Jacob, IL

54°Current weather

St. Jacob, Saturday, 24 October, 00:25

Partly cloudy. Feels like 53°. High 75°, low 48°.

Pressure30.30 inHg
Wind6.7 mph SE
Humidity76%
Visibility6.2 mi
Dew point47°

Monthly outlook for St. Jacob, IL: average high 71.3°, average low 51.6°. That is 6.3° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 30 October (77.8°), the coolest 4 November (41.5°).

71.3°/51.6°
Average high / low
+6.3°
Above normal
2 / 5
Wet days / normal
0.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
24 October – 2 November72.2°61.6°+5.9°
3 November – 12 November69.9°56.5°+7.4°
13 November – 22 Novemberat normal52.9°—

October records over 66 years

91.4°1 October 2019All-time high
28.6°24 October 1981All-time low

Climate normals and records are computed from the nearest reference point — Edwardsville (13 mi).

Sun, 2577° / 48°0Overcast
77 °Overcast

St. Jacob, Sunday, 25 October

Overcast. High 77°, low 48°.

Pressure30.39 inHg
Wind2.9 mph S
Humidity51%
Visibility6.2 mi
Dew point52°
Mon, 2674° / 54°0Overcast
74 °Overcast

St. Jacob, Monday, 26 October

Overcast. High 74°, low 54°.

Pressure30.33 inHg
Wind3.5 mph SW
Humidity50%
Visibility6.2 mi
Dew point52°
Tue, 2772° / 53°0Overcast
72 °Overcast

St. Jacob, Tuesday, 27 October

Overcast. High 72°, low 53°.

Pressure30.24 inHg
Wind4.4 mph S
Humidity57%
Visibility6.2 mi
Dew point51°
Wed, 2875° / 53°0Clear
75 °Clear

St. Jacob, Wednesday, 28 October

Clear. High 75°, low 53°.

Pressure30.21 inHg
Wind7.3 mph S
Humidity45%
Visibility—
Dew point49°
Thu, 2978° / 54°0Mostly clear
78 °Mostly clear

St. Jacob, Thursday, 29 October

Mostly clear. High 78°, low 54°.

Pressure30.24 inHg
Wind8 mph S
Humidity36%
Visibility—
Dew point44°
Fri, 3078° / 59°0Overcast
78 °Overcast

St. Jacob, Friday, 30 October

Overcast. High 78°, low 59°.

Pressure30.18 inHg
Wind7.7 mph S
Humidity31%
Visibility—
Dew point39°
Sat, 3165° / 61°0.03Light rain
65 °Light rain

St. Jacob, Saturday, 31 October

Light rain. High 65°, low 61°.

Pressure30.12 inHg
Wind12.8 mph S
Humidity44%
Visibility—
Dew point42°
Sun, 0167° / 54°0.15Light rain
67 °Light rain

St. Jacob, Sunday, 1 November

Light rain. High 67°, low 54°.

Pressure30.00 inHg
Wind14.5 mph S
Humidity83%
Visibility—
Dew point57°
Mon, 0262° / 43°0Mostly clear
62 °Mostly clear

St. Jacob, Monday, 2 November

Mostly clear. High 62°, low 43°.

Pressure30.18 inHg
Wind13.4 mph NW
Humidity30%
Visibility—
Dew point27°
Tue, 0360° / 44°0Overcast
60 °Overcast

St. Jacob, Tuesday, 3 November

Overcast. High 60°, low 44°.

Pressure30.12 inHg
Wind11.9 mph NW
Humidity35%
Visibility—
Dew point30°
Wed, 0466° / 42°0Overcast
66 °Overcast

St. Jacob, Wednesday, 4 November

Overcast. High 66°, low 42°.

Pressure30.03 inHg
Wind10.6 mph SE
Humidity33%
Visibility—
Dew point30°
Thu, 0574° / 51°0Mostly clear
74 °Mostly clear

St. Jacob, Thursday, 5 November

Mostly clear. High 74°, low 51°.

Pressure30.06 inHg
Wind8.7 mph SW
Humidity44%
Visibility—
Dew point45°
Fri, 0677° / 57°0.01Light rain
77 °Light rain

St. Jacob, Friday, 6 November

Light rain. High 77°, low 57°.

Pressure30.09 inHg
Wind12.5 mph SW
Humidity40%
Visibility—
Dew point47°
Sat, 0775° / 57°0.06Light rain
75 °Light rain

St. Jacob, Saturday, 7 November

Light rain. High 75°, low 57°.

Pressure30.15 inHg
Wind12.9 mph NW
Humidity37%
Visibility—
Dew point44°
Sun, 0868° / 49°0Partly cloudy
68 °Partly cloudy

St. Jacob, Sunday, 8 November

Partly cloudy. High 68°, low 49°.

Pressure30.18 inHg
Wind7.4 mph NW
Humidity26%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0958° / 43°0.1Climate normal
58 °Climate normal

St. Jacob, Monday, 9 November

Climate normal for this date — 60-year average.

Average high58°
Average low43°
Average precipitation0.1 in
Chance of precipitation30%
Record high76° (2022)
Record low8° (1991)
Tue, 1056° / 41°0.13Climate normal
56 °Climate normal

St. Jacob, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high56°
Average low41°
Average precipitation0.13 in
Chance of precipitation30%
Record high74° (2020)
Record low20° (2018)
Wed, 1154° / 39°0.11Climate normal
54 °Climate normal

St. Jacob, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.11 in
Chance of precipitation27%
Record high74° (1989)
Record low23° (2019)
Thu, 1252° / 37°0.09Climate normal
52 °Climate normal

St. Jacob, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.09 in
Chance of precipitation25%
Record high72° (2010)
Record low12° (2019)
Fri, 1353° / 38°0.06Climate normal
53 °Climate normal

St. Jacob, Friday, 13 November

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.06 in
Chance of precipitation22%
Record high77° (1999)
Record low11° (1986)
Sat, 1454° / 39°0.1Climate normal
54 °Climate normal

St. Jacob, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.1 in
Chance of precipitation28%
Record high77° (1971)
Record low16° (1986)
Sun, 1554° / 39°0.13Climate normal
54 °Climate normal

St. Jacob, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.13 in
Chance of precipitation32%
Record high76° (2025)
Record low22° (2019)
Mon, 1653° / 38°0.11Climate normal
53 °Climate normal

St. Jacob, Monday, 16 November

Climate normal for this date — 60-year average.

Average high53°
Average low38°
Average precipitation0.11 in
Chance of precipitation23%
Record high71° (2001)
Record low24° (1997)
Tue, 1754° / 39°0.12Climate normal
54 °Climate normal

St. Jacob, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high54°
Average low39°
Average precipitation0.12 in
Chance of precipitation25%
Record high75° (2016)
Record low14° (1997)
Wed, 1854° / 40°0.17Climate normal
54 °Climate normal

St. Jacob, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high54°
Average low40°
Average precipitation0.17 in
Chance of precipitation32%
Record high70° (2024)
Record low14° (2014)
Thu, 1953° / 39°0.07Climate normal
53 °Climate normal

St. Jacob, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high53°
Average low39°
Average precipitation0.07 in
Chance of precipitation32%
Record high72° (1985)
Record low21° (2022)
Fri, 2052° / 38°0.1Climate normal
52 °Climate normal

St. Jacob, Friday, 20 November

Climate normal for this date — 60-year average.

Average high52°
Average low38°
Average precipitation0.1 in
Chance of precipitation33%
Record high71° (2007)
Record low18° (1984)
Sat, 2151° / 38°0.1Climate normal
51 °Climate normal

St. Jacob, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high51°
Average low38°
Average precipitation0.1 in
Chance of precipitation25%
Record high71° (1990)
Record low17° (1964)
Sun, 2251° / 37°0.09Climate normal
51 °Climate normal

St. Jacob, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high51°
Average low37°
Average precipitation0.09 in
Chance of precipitation30%
Record high71° (2010)
Record low17° (1964)

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.