As of 01:48 CDT

Weather in Spring Bay, IL

75°

Spring Bay, Tuesday, 13 October, 01:48

Clear. Feels like 75°. High 86°, low 66°.

Pressure29.80 inHg

Wind4 mph SW

Humidity68%

Visibility6.2 mi

Dew point62°

See detailed hourly forecast

Monthly outlook for Spring Bay, IL: average high 65.5°, average low 51.2°. That is 2.8° above the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 13 October (85.8°), the coolest 17 October (39.4°).

65.5°/51.2°

Average high / low

+2.8°

Above normal

5 / 5

Wet days / normal

1.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 October – 22 October	68.9°	61.9°	+3.9°
23 October – 1 November	59.8°	58°	+1°
2 November – 11 November	at normal	53°	—

October records over 66 years

89.1°3 October 2025All-time high

21°22 October 1976All-time low

Climate normals and records are computed from the nearest reference point — Peoria (7 mi).

Wed, 1476° / 62°

0.06

76 °

Spring Bay, Wednesday, 14 October

Rain. High 76°, low 62°.

Pressure30.06 inHg

Wind8.1 mph NE

Humidity67%

Visibility6.2 mi

Dew point59°

Thu, 1565° / 58°

0.98

65 °

Spring Bay, Thursday, 15 October

Rain. High 65°, low 58°.

Pressure30.00 inHg

Wind6.9 mph NE

Humidity99%

Visibility1.4 mi

Dew point60°

Fri, 1658° / 48°

58 °

Spring Bay, Friday, 16 October

Overcast. High 58°, low 48°.

Pressure30.30 inHg

Wind21.7 mph NW

Humidity51%

Visibility6.2 mi

Dew point36°

Sat, 1759° / 39°

59 °

Spring Bay, Saturday, 17 October

Clear. High 59°, low 39°.

Pressure30.50 inHg

Wind8.2 mph SW

Humidity41%

Visibility—

Dew point31°

Sun, 1864° / 46°

64 °

Spring Bay, Sunday, 18 October

Partly cloudy. High 64°, low 46°.

Pressure30.24 inHg

Wind12.4 mph S

Humidity45%

Visibility—

Dew point38°

Mon, 1963° / 49°

0.07

63 °

Spring Bay, Monday, 19 October

Light rain. High 63°, low 49°.

Pressure30.21 inHg

Wind8.1 mph S

Humidity47%

Visibility—

Dew point40°

Tue, 2069° / 54°

0.14

69 °

Spring Bay, Tuesday, 20 October

Light rain. High 69°, low 54°.

Pressure30.15 inHg

Wind10.3 mph SE

Humidity83%

Visibility—

Dew point58°

Wed, 2172° / 60°

72 °

Spring Bay, Wednesday, 21 October

Overcast. High 72°, low 60°.

Pressure30.15 inHg

Wind13.4 mph S

Humidity66%

Visibility—

Dew point59°

Thu, 2278° / 63°

0.02

78 °

Spring Bay, Thursday, 22 October

Light rain. High 78°, low 63°.

Pressure29.97 inHg

Wind22.9 mph S

Humidity58%

Visibility—

Dew point59°

Fri, 2368° / 52°

0.24

68 °

Spring Bay, Friday, 23 October

Rain. High 68°, low 52°.

Pressure30.06 inHg

Wind26.5 mph S

Humidity54%

Visibility—

Dew point45°

Sat, 2461° / 48°

61 °

Spring Bay, Saturday, 24 October

Overcast. High 61°, low 48°.

Pressure30.33 inHg

Wind11.4 mph NW

Humidity40%

Visibility—

Dew point35°

Sun, 2555° / 42°

55 °

Spring Bay, Sunday, 25 October

Overcast. High 55°, low 42°.

Pressure30.30 inHg

Wind6.9 mph W

Humidity44%

Visibility—

Dew point32°

Mon, 2659° / 43°

0.01

59 °

Spring Bay, Monday, 26 October

Light rain. High 59°, low 43°.

Pressure30.06 inHg

Wind9.7 mph W

Humidity56%

Visibility—

Dew point40°

Tue, 2762° / 44°

0.03

62 °

Spring Bay, Tuesday, 27 October

Light rain. High 62°, low 44°.

Pressure29.65 inHg

Wind16.4 mph NW

Humidity59%

Visibility—

Dew point45°

Wed, 2854° / 46°

54 °

Spring Bay, Wednesday, 28 October

Overcast. High 54°, low 46°.

Pressure29.85 inHg

Wind16.5 mph NW

Humidity48%

Visibility—

Dew point34°

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

Thu, 2957° / 42°

0.08

57 °

Spring Bay, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.08 in

Chance of precipitation25%

Record high78° (2024)

Record low23° (1980)

Fri, 3059° / 43°

0.11

59 °

Spring Bay, Friday, 30 October

Climate normal for this date — 60-year average.

Average high59°

Average low43°

Average precipitation0.11 in

Chance of precipitation28%

Record high79° (1971)

Record low25° (1988)

Sat, 3158° / 43°

0.17

58 °

Spring Bay, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.17 in

Chance of precipitation42%

Record high74° (1974)

Record low24° (2019)

Sun, 0157° / 42°

0.18

57 °

Spring Bay, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.18 in

Chance of precipitation32%

Record high77° (2016)

Record low22° (2019)

Mon, 0255° / 41°

0.08

55 °

Spring Bay, Monday, 2 November

Climate normal for this date — 60-year average.

Average high55°

Average low41°

Average precipitation0.08 in

Chance of precipitation33%

Record high75° (1961)

Record low23° (1991)

Tue, 0354° / 40°

0.09

54 °

Spring Bay, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.09 in

Chance of precipitation23%

Record high74° (1964)

Record low17° (1991)

Wed, 0454° / 41°

0.08

54 °

Spring Bay, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high54°

Average low41°

Average precipitation0.08 in

Chance of precipitation23%

Record high74° (1978)

Record low16° (1991)

Thu, 0553° / 39°

0.13

53 °

Spring Bay, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.13 in

Chance of precipitation25%

Record high74° (1978)

Record low19° (1991)

Fri, 0653° / 38°

0.09

53 °

Spring Bay, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.09 in

Chance of precipitation25%

Record high71° (2020)

Record low24° (1991)

Sat, 0753° / 38°

0.04

53 °

Spring Bay, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.04 in

Chance of precipitation17%

Record high69° (1966)

Record low15° (1991)

Sun, 0853° / 38°

0.05

53 °

Spring Bay, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.05 in

Chance of precipitation20%

Record high75° (1999)

Record low12° (1991)

Mon, 0954° / 39°

0.14

54 °

Spring Bay, Monday, 9 November

Climate normal for this date — 60-year average.

Average high54°

Average low39°

Average precipitation0.14 in

Chance of precipitation35%

Record high74° (2020)

Record low16° (1991)

Tue, 1051° / 37°

0.15

51 °

Spring Bay, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.15 in

Chance of precipitation32%

Record high73° (2020)

Record low17° (2018)

Wed, 1149° / 35°

0.07

49 °

Spring Bay, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.07 in

Chance of precipitation27%

Record high73° (1964)

Record low17° (2019)

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 Spring Bay, 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 Spring Bay, 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.