As of 04:21 CDT

Weather in Sangamon, IL

54°

Sangamon, Saturday, 10 October, 04:21

Clear. Feels like 52°. High 80°, low 54°.

Pressure30.09 inHg

Wind0 mph N

Humidity76%

Visibility6.2 mi

Dew point46°

See detailed hourly forecast

Monthly outlook for Sangamon, IL: average high 67.1°, average low 49.5°. That is 1.7° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (88.4°), the coolest 18 October (34°).

67.1°/49.5°

Average high / low

+1.7°

Above normal

4 / 4

Wet days / normal

0.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	69.8°	65.1°	+2.6°
20 October – 29 October	62.6°	61.2°	+0.8°
30 October – 8 November	at normal	57.2°	—

October records over 66 years

88.7°7 October 2007All-time high

22.5°26 October 1962All-time low

Climate normals and records are computed from the nearest reference point — Lake City (11 mi).

Sun, 1181° / 52°

81 °

Sangamon, Sunday, 11 October

Clear. High 81°, low 52°.

Pressure29.97 inHg

Wind1.8 mph NE

Humidity50%

Visibility6.2 mi

Dew point54°

Mon, 1288° / 64°

88 °

Sangamon, Monday, 12 October

Clear. High 88°, low 64°.

Pressure29.88 inHg

Wind10.7 mph SW

Humidity43%

Visibility6.2 mi

Dew point59°

Tue, 1388° / 72°

88 °

Sangamon, Tuesday, 13 October

Clear. High 88°, low 72°.

Pressure29.85 inHg

Wind9.8 mph W

Humidity49%

Visibility6.2 mi

Dew point62°

Wed, 1477° / 64°

0.22

77 °

Sangamon, Wednesday, 14 October

Rain. High 77°, low 64°.

Pressure30.03 inHg

Wind13.6 mph NE

Humidity66%

Visibility—

Dew point63°

Thu, 1564° / 56°

0.27

64 °

Sangamon, Thursday, 15 October

Rain. High 64°, low 56°.

Pressure30.27 inHg

Wind14.5 mph NW

Humidity64%

Visibility—

Dew point48°

Fri, 1668° / 54°

68 °

Sangamon, Friday, 16 October

Overcast. High 68°, low 54°.

Pressure29.97 inHg

Wind18.1 mph NW

Humidity34%

Visibility—

Dew point37°

Sat, 1749° / 41°

0.02

49 °

Sangamon, Saturday, 17 October

Light rain. High 49°, low 41°.

Pressure30.18 inHg

Wind17.1 mph NW

Humidity67%

Visibility—

Dew point33°

Sun, 1849° / 34°

49 °

Sangamon, Sunday, 18 October

Overcast. High 49°, low 34°.

Pressure30.47 inHg

Wind15.2 mph NW

Humidity52%

Visibility—

Dew point29°

Mon, 1954° / 35°

54 °

Sangamon, Monday, 19 October

Overcast. High 54°, low 35°.

Pressure30.42 inHg

Wind7.3 mph S

Humidity33%

Visibility—

Dew point21°

Tue, 2060° / 39°

60 °

Sangamon, Tuesday, 20 October

Overcast. High 60°, low 39°.

Pressure30.33 inHg

Wind9.2 mph S

Humidity29%

Visibility—

Dew point24°

Wed, 2166° / 42°

66 °

Sangamon, Wednesday, 21 October

Clear. High 66°, low 42°.

Pressure30.30 inHg

Wind10.3 mph S

Humidity30%

Visibility—

Dew point29°

Thu, 2270° / 47°

70 °

Sangamon, Thursday, 22 October

Clear. High 70°, low 47°.

Pressure30.15 inHg

Wind15.5 mph S

Humidity33%

Visibility—

Dew point36°

Fri, 2357° / 49°

0.06

57 °

Sangamon, Friday, 23 October

Light rain. High 57°, low 49°.

Pressure29.97 inHg

Wind12.3 mph S

Humidity81%

Visibility—

Dew point48°

Sat, 2465° / 47°

0.08

65 °

Sangamon, Saturday, 24 October

Light rain. High 65°, low 47°.

Pressure29.83 inHg

Wind15.2 mph S

Humidity51%

Visibility—

Dew point44°

Sun, 2558° / 44°

58 °

Sangamon, Sunday, 25 October

Clear. High 58°, low 44°.

Pressure29.94 inHg

Wind15.6 mph W

Humidity42%

Visibility—

Dew point32°

From day 17 onward the outlook is built from 60-year climate statistics

Mon, 2660° / 44°

0.13

60 °

Sangamon, Monday, 26 October

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.13 in

Chance of precipitation30%

Record high82° (1963)

Record low22° (1962)

Tue, 2760° / 44°

0.09

60 °

Sangamon, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high60°

Average low44°

Average precipitation0.09 in

Chance of precipitation33%

Record high76° (2023)

Record low32° (2001)

Wed, 2859° / 43°

0.06

59 °

Sangamon, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high59°

Average low43°

Average precipitation0.06 in

Chance of precipitation18%

Record high77° (1999)

Record low27° (1976)

Thu, 2959° / 43°

0.07

59 °

Sangamon, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high59°

Average low43°

Average precipitation0.07 in

Chance of precipitation22%

Record high79° (2004)

Record low25° (1980)

Fri, 3061° / 45°

0.11

61 °

Sangamon, Friday, 30 October

Climate normal for this date — 60-year average.

Average high61°

Average low45°

Average precipitation0.11 in

Chance of precipitation32%

Record high80° (1971)

Record low25° (1980)

Sat, 3160° / 45°

0.17

60 °

Sangamon, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.17 in

Chance of precipitation40%

Record high76° (1974)

Record low27° (2023)

Sun, 0159° / 44°

0.2

59 °

Sangamon, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high59°

Average low44°

Average precipitation0.2 in

Chance of precipitation32%

Record high77° (2016)

Record low26° (1993)

Mon, 0258° / 42°

0.09

58 °

Sangamon, Monday, 2 November

Climate normal for this date — 60-year average.

Average high58°

Average low42°

Average precipitation0.09 in

Chance of precipitation30%

Record high77° (2016)

Record low26° (2020)

Tue, 0356° / 41°

0.09

56 °

Sangamon, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.09 in

Chance of precipitation30%

Record high76° (1987)

Record low19° (1991)

Wed, 0456° / 43°

0.1

56 °

Sangamon, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°

Average low43°

Average precipitation0.1 in

Chance of precipitation28%

Record high75° (2022)

Record low17° (1991)

Thu, 0556° / 41°

0.11

56 °

Sangamon, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.11 in

Chance of precipitation28%

Record high76° (1978)

Record low20° (1991)

Fri, 0655° / 40°

0.08

55 °

Sangamon, Friday, 6 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.08 in

Chance of precipitation28%

Record high73° (2023)

Record low26° (1982)

Sat, 0755° / 40°

0.09

55 °

Sangamon, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.09 in

Chance of precipitation23%

Record high71° (1980)

Record low18° (1991)

Sun, 0855° / 40°

0.04

55 °

Sangamon, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high55°

Average low40°

Average precipitation0.04 in

Chance of precipitation18%

Record high77° (1999)

Record low10° (1991)

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 Sangamon, 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 Sangamon, 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.