As of 19:31 CDT

Weather in Belvidere, IL

58°

Belvidere, Thursday, 22 October, 19:31

Clear. Feels like 57°. High 73°, low 45°.

Pressure30.24 inHg

Wind2.3 mph E

Humidity76%

Visibility6.2 mi

Dew point50°

See detailed hourly forecast

Monthly outlook for Belvidere, IL: average high 59.7°, average low 45.4°. That is 2.9° above the climate normal for October. Precipitation is expected on 2 days (about 1.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 October (72.7°), the coolest 3 November (38.1°).

59.7°/45.4°

Average high / low

+2.9°

Above normal

2 / 5

Wet days / normal

1.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
22 October – 31 October	62.9°	56°	+3.8°
1 November – 10 November	54.4°	51°	+1.9°
11 November – 20 November	at normal	45.7°	—

October records over 66 years

88°3 October 2025All-time high

22.1°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Rockford (10 mi).

Fri, 2372° / 46°

72 °

Belvidere, Friday, 23 October

Clear. High 72°, low 46°.

Pressure30.30 inHg

Wind6.7 mph S

Humidity58%

Visibility6.2 mi

Dew point51°

Sat, 2467° / 45°

67 °

Belvidere, Saturday, 24 October

Overcast. High 67°, low 45°.

Pressure30.36 inHg

Wind7.3 mph S

Humidity62%

Visibility6.2 mi

Dew point51°

Sun, 2571° / 53°

71 °

Belvidere, Sunday, 25 October

Clear. High 71°, low 53°.

Pressure30.39 inHg

Wind4.5 mph S

Humidity63%

Visibility6.2 mi

Dew point53°

Mon, 2662° / 52°

62 °

Belvidere, Monday, 26 October

Overcast. High 62°, low 52°.

Pressure30.42 inHg

Wind7.4 mph NE

Humidity73%

Visibility6.2 mi

Dew point52°

Tue, 2761° / 50°

61 °

Belvidere, Tuesday, 27 October

Overcast. High 61°, low 50°.

Pressure30.33 inHg

Wind8.1 mph E

Humidity67%

Visibility—

Dew point48°

Wed, 2860° / 49°

0.01

60 °

Belvidere, Wednesday, 28 October

Light rain. High 60°, low 49°.

Pressure30.12 inHg

Wind7.9 mph W

Humidity74%

Visibility—

Dew point50°

Thu, 2955° / 50°

0.27

55 °

Belvidere, Thursday, 29 October

Rain. High 55°, low 50°.

Pressure30.15 inHg

Wind6.3 mph SW

Humidity79%

Visibility—

Dew point48°

Fri, 3054° / 45°

0.96

54 °

Belvidere, Friday, 30 October

Rain. High 54°, low 45°.

Pressure30.03 inHg

Wind11 mph N

Humidity89%

Visibility—

Dew point48°

Sat, 3155° / 39°

55 °

Belvidere, Saturday, 31 October

Partly cloudy. High 55°, low 39°.

Pressure30.15 inHg

Wind6.9 mph N

Humidity55%

Visibility—

Dew point37°

Sun, 0154° / 45°

54 °

Belvidere, Sunday, 1 November

Overcast. High 54°, low 45°.

Pressure30.09 inHg

Wind8.1 mph N

Humidity41%

Visibility—

Dew point29°

Mon, 0254° / 41°

54 °

Belvidere, Monday, 2 November

Overcast. High 54°, low 41°.

Pressure30.21 inHg

Wind7.2 mph N

Humidity57%

Visibility—

Dew point37°

Tue, 0354° / 38°

54 °

Belvidere, Tuesday, 3 November

Overcast. High 54°, low 38°.

Pressure30.39 inHg

Wind4.1 mph E

Humidity46%

Visibility—

Dew point31°

Wed, 0455° / 41°

55 °

Belvidere, Wednesday, 4 November

Overcast. High 55°, low 41°.

Pressure30.53 inHg

Wind3.4 mph SE

Humidity47%

Visibility—

Dew point33°

Thu, 0556° / 42°

56 °

Belvidere, Thursday, 5 November

Overcast. High 56°, low 42°.

Pressure30.45 inHg

Wind5.9 mph SW

Humidity50%

Visibility—

Dew point36°

Fri, 0654° / 44°

54 °

Belvidere, Friday, 6 November

Overcast. High 54°, low 44°.

Pressure30.27 inHg

Wind5.3 mph SW

Humidity59%

Visibility—

Dew point37°

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

Sat, 0750° / 36°

0.03

50 °

Belvidere, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°

Average low36°

Average precipitation0.03 in

Chance of precipitation17%

Record high67° (2020)

Record low10° (1991)

Sun, 0850° / 36°

0.05

50 °

Belvidere, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°

Average low36°

Average precipitation0.05 in

Chance of precipitation20%

Record high71° (2020)

Record low13° (1991)

Mon, 0950° / 37°

0.11

50 °

Belvidere, Monday, 9 November

Climate normal for this date — 60-year average.

Average high50°

Average low37°

Average precipitation0.11 in

Chance of precipitation32%

Record high73° (2020)

Record low17° (1991)

Tue, 1049° / 35°

0.11

49 °

Belvidere, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.11 in

Chance of precipitation30%

Record high71° (2022)

Record low15° (2017)

Wed, 1146° / 33°

0.06

46 °

Belvidere, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high46°

Average low33°

Average precipitation0.06 in

Chance of precipitation25%

Record high69° (1964)

Record low13° (2019)

Thu, 1245° / 32°

0.07

45 °

Belvidere, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high45°

Average low32°

Average precipitation0.07 in

Chance of precipitation25%

Record high64° (1964)

Record low3° (2019)

Fri, 1345° / 32°

0.04

45 °

Belvidere, Friday, 13 November

Climate normal for this date — 60-year average.

Average high45°

Average low32°

Average precipitation0.04 in

Chance of precipitation18%

Record high69° (1999)

Record low8° (1986)

Sat, 1446° / 32°

0.06

46 °

Belvidere, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high46°

Average low32°

Average precipitation0.06 in

Chance of precipitation28%

Record high67° (1971)

Record low10° (1995)

Sun, 1546° / 33°

0.07

46 °

Belvidere, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high46°

Average low33°

Average precipitation0.07 in

Chance of precipitation27%

Record high69° (2025)

Record low9° (1995)

Mon, 1646° / 32°

0.05

46 °

Belvidere, Monday, 16 November

Climate normal for this date — 60-year average.

Average high46°

Average low32°

Average precipitation0.05 in

Chance of precipitation17%

Record high62° (1988)

Record low19° (2019)

Tue, 1746° / 33°

0.11

46 °

Belvidere, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high46°

Average low33°

Average precipitation0.11 in

Chance of precipitation27%

Record high71° (2016)

Record low15° (2005)

Wed, 1846° / 33°

0.09

46 °

Belvidere, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high46°

Average low33°

Average precipitation0.09 in

Chance of precipitation30%

Record high67° (1999)

Record low11° (2014)

Thu, 1946° / 33°

0.06

46 °

Belvidere, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high46°

Average low33°

Average precipitation0.06 in

Chance of precipitation25%

Record high64° (1983)

Record low16° (1986)

Fri, 2044° / 32°

0.07

44 °

Belvidere, Friday, 20 November

Climate normal for this date — 60-year average.

Average high44°

Average low32°

Average precipitation0.07 in

Chance of precipitation33%

Record high62° (1982)

Record low13° (2022)

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 Belvidere, 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 Belvidere, 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.