As of 03:37 CDT

Weather in Spring Bay, IL

41°

Spring Bay, Sunday, 18 October, 03:37

Clear. Feels like 39°. High 65°, low 41°.

Pressure30.45 inHg

Wind4 mph SE

Humidity87%

Visibility6.2 mi

Dew point37°

See detailed hourly forecast

Monthly outlook for Spring Bay, IL: average high 69.6°, average low 51.3°. That is 6.1° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 1 November (81°), the coolest 26 October (40.8°).

69.6°/51.3°

Average high / low

+6.1°

Above normal

0 / 5

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
18 October – 27 October	67°	59.6°	+4.1°
28 October – 6 November	73.9°	55.8°	+10.1°
7 November – 16 November	at normal	50.3°	—

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).

Mon, 1967° / 43°

67 °

Spring Bay, Monday, 19 October

Partly cloudy. High 67°, low 43°.

Pressure30.39 inHg

Wind4 mph S

Humidity56%

Visibility6.2 mi

Dew point46°

Tue, 2067° / 44°

67 °

Spring Bay, Tuesday, 20 October

Clear. High 67°, low 44°.

Pressure30.39 inHg

Wind3.9 mph SE

Humidity49%

Visibility6.2 mi

Dew point45°

Wed, 2168° / 47°

68 °

Spring Bay, Wednesday, 21 October

Clear. High 68°, low 47°.

Pressure30.30 inHg

Wind3.7 mph SW

Humidity53%

Visibility6.2 mi

Dew point48°

Thu, 2270° / 50°

70 °

Spring Bay, Thursday, 22 October

Clear. High 70°, low 50°.

Pressure30.27 inHg

Wind5.3 mph NE

Humidity51%

Visibility—

Dew point48°

Fri, 2367° / 52°

67 °

Spring Bay, Friday, 23 October

Mostly clear. High 67°, low 52°.

Pressure30.33 inHg

Wind7.8 mph SE

Humidity55%

Visibility—

Dew point48°

Sat, 2476° / 59°

76 °

Spring Bay, Saturday, 24 October

Overcast. High 76°, low 59°.

Pressure30.21 inHg

Wind16.3 mph S

Humidity28%

Visibility—

Dew point37°

Sun, 2562° / 46°

62 °

Spring Bay, Sunday, 25 October

Overcast. High 62°, low 46°.

Pressure30.47 inHg

Wind12.4 mph N

Humidity44%

Visibility—

Dew point33°

Mon, 2658° / 41°

0.01

58 °

Spring Bay, Monday, 26 October

Light rain. High 58°, low 41°.

Pressure30.36 inHg

Wind10.8 mph SW

Humidity28%

Visibility—

Dew point22°

Tue, 2769° / 51°

0.01

69 °

Spring Bay, Tuesday, 27 October

Light rain. High 69°, low 51°.

Pressure30.15 inHg

Wind7.2 mph SW

Humidity47%

Visibility—

Dew point44°

Wed, 2870° / 57°

70 °

Spring Bay, Wednesday, 28 October

Overcast. High 70°, low 57°.

Pressure29.97 inHg

Wind10.2 mph SW

Humidity45%

Visibility—

Dew point46°

Thu, 2970° / 58°

70 °

Spring Bay, Thursday, 29 October

Overcast. High 70°, low 58°.

Pressure29.77 inHg

Wind7.4 mph SW

Humidity52%

Visibility—

Dew point49°

Fri, 3074° / 54°

74 °

Spring Bay, Friday, 30 October

Clear. High 74°, low 54°.

Pressure29.77 inHg

Wind14.5 mph SW

Humidity51%

Visibility—

Dew point50°

Sat, 3178° / 59°

78 °

Spring Bay, Saturday, 31 October

Overcast. High 78°, low 59°.

Pressure29.74 inHg

Wind14.8 mph SW

Humidity61%

Visibility—

Dew point58°

Sun, 0181° / 62°

81 °

Spring Bay, Sunday, 1 November

Mostly clear. High 81°, low 62°.

Pressure29.94 inHg

Wind15 mph SW

Humidity49%

Visibility—

Dew point56°

Mon, 0270° / 58°

70 °

Spring Bay, Monday, 2 November

Overcast. High 70°, low 58°.

Pressure30.21 inHg

Wind13.9 mph NE

Humidity28%

Visibility—

Dew point34°

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

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)

Thu, 1248° / 33°

0.07

48 °

Spring Bay, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.07 in

Chance of precipitation25%

Record high70° (2010)

Record low9° (2019)

Fri, 1349° / 34°

0.06

49 °

Spring Bay, Friday, 13 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.06 in

Chance of precipitation15%

Record high72° (1999)

Record low7° (1986)

Sat, 1449° / 35°

0.07

49 °

Spring Bay, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.07 in

Chance of precipitation28%

Record high72° (1971)

Record low14° (1986)

Sun, 1549° / 35°

0.07

49 °

Spring Bay, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.07 in

Chance of precipitation30%

Record high70° (2025)

Record low18° (2014)

Mon, 1649° / 35°

0.06

49 °

Spring Bay, Monday, 16 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.06 in

Chance of precipitation23%

Record high69° (1971)

Record low21° (1997)

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.