As of 07:28 CDT

Weather in Tonica, IL

46°

Tonica, Thursday, 22 October, 07:28

Clear. Feels like 46°. High 75°, low 46°.

Pressure30.27 inHg

Wind0.2 mph N

Humidity91%

Visibility6.2 mi

Dew point44°

See detailed hourly forecast

Monthly outlook for Tonica, IL: average high 63.1°, average low 47.9°. That is 3.2° above the climate normal for October. Precipitation is expected on 3 days (about 2.5 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 October (74.6°), the coolest 3 November (40.6°).

63.1°/47.9°

Average high / low

+3.2°

Above normal

3 / 5

Wet days / normal

2.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
22 October – 31 October	67.4°	58.8°	+4.8°
1 November – 10 November	55.8°	54°	+1°
11 November – 20 November	at normal	49°	—

October records over 66 years

89.2°7 October 2007All-time high

21.9°22 October 1976All-time low

Climate normals and records are computed from the nearest reference point — Toluca (15 mi).

Fri, 2373° / 47°

73 °

Tonica, Friday, 23 October

Clear. High 73°, low 47°.

Pressure30.30 inHg

Wind5.6 mph S

Humidity49%

Visibility6.2 mi

Dew point49°

Sat, 2470° / 49°

70 °

Tonica, Saturday, 24 October

Overcast. High 70°, low 49°.

Pressure30.36 inHg

Wind6.2 mph S

Humidity53%

Visibility6.2 mi

Dew point49°

Sun, 2573° / 51°

73 °

Tonica, Sunday, 25 October

Overcast. High 73°, low 51°.

Pressure30.39 inHg

Wind4.9 mph S

Humidity50%

Visibility6.2 mi

Dew point50°

Mon, 2670° / 51°

70 °

Tonica, Monday, 26 October

Overcast. High 70°, low 51°.

Pressure30.36 inHg

Wind8.7 mph NE

Humidity56%

Visibility—

Dew point49°

Tue, 2768° / 51°

68 °

Tonica, Tuesday, 27 October

Overcast. High 68°, low 51°.

Pressure30.30 inHg

Wind8.1 mph NE

Humidity62%

Visibility—

Dew point51°

Wed, 2861° / 51°

0.01

61 °

Tonica, Wednesday, 28 October

Light rain. High 61°, low 51°.

Pressure30.18 inHg

Wind5.1 mph NW

Humidity69%

Visibility—

Dew point48°

Thu, 2963° / 49°

0.37

63 °

Tonica, Thursday, 29 October

Rain. High 63°, low 49°.

Pressure30.12 inHg

Wind8.8 mph SE

Humidity57%

Visibility—

Dew point45°

Fri, 3063° / 55°

1.26

63 °

Tonica, Friday, 30 October

Heavy rain. High 63°, low 55°.

Pressure29.83 inHg

Wind14.8 mph SW

Humidity79%

Visibility—

Dew point54°

Sat, 3160° / 52°

0.87

60 °

Tonica, Saturday, 31 October

Rain. High 60°, low 52°.

Pressure29.71 inHg

Wind14.5 mph S

Humidity95%

Visibility—

Dew point58°

Sun, 0162° / 48°

62 °

Tonica, Sunday, 1 November

Clear. High 62°, low 48°.

Pressure29.94 inHg

Wind7.7 mph N

Humidity52%

Visibility—

Dew point42°

Mon, 0256° / 45°

56 °

Tonica, Monday, 2 November

Overcast. High 56°, low 45°.

Pressure30.18 inHg

Wind13.9 mph NE

Humidity53%

Visibility—

Dew point38°

Tue, 0356° / 41°

56 °

Tonica, Tuesday, 3 November

Overcast. High 56°, low 41°.

Pressure30.36 inHg

Wind10.8 mph NE

Humidity48%

Visibility—

Dew point34°

Wed, 0453° / 41°

53 °

Tonica, Wednesday, 4 November

Overcast. High 53°, low 41°.

Pressure30.39 inHg

Wind17.2 mph NE

Humidity51%

Visibility—

Dew point34°

Thu, 0553° / 44°

53 °

Tonica, Thursday, 5 November

Light rain. High 53°, low 44°.

Pressure30.30 inHg

Wind15.9 mph E

Humidity46%

Visibility—

Dew point31°

Fri, 0655° / 47°

55 °

Tonica, Friday, 6 November

Overcast. High 55°, low 47°.

Pressure30.21 inHg

Wind6.7 mph NE

Humidity73%

Visibility—

Dew point43°

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

Sat, 0753° / 38°

0.04

53 °

Tonica, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high53°

Average low38°

Average precipitation0.04 in

Chance of precipitation18%

Record high70° (1966)

Record low17° (1991)

Sun, 0853° / 38°

0.05

53 °

Tonica, 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 °

Tonica, Monday, 9 November

Climate normal for this date — 60-year average.

Average high54°

Average low39°

Average precipitation0.14 in

Chance of precipitation37%

Record high73° (2020)

Record low17° (1991)

Tue, 1051° / 37°

0.14

51 °

Tonica, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high51°

Average low37°

Average precipitation0.14 in

Chance of precipitation28%

Record high73° (2020)

Record low16° (2018)

Wed, 1150° / 34°

0.06

50 °

Tonica, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high50°

Average low34°

Average precipitation0.06 in

Chance of precipitation23%

Record high73° (1964)

Record low17° (2019)

Thu, 1248° / 33°

0.07

48 °

Tonica, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high48°

Average low33°

Average precipitation0.07 in

Chance of precipitation28%

Record high71° (2010)

Record low8° (2019)

Fri, 1349° / 34°

0.06

49 °

Tonica, Friday, 13 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.06 in

Chance of precipitation13%

Record high72° (1999)

Record low8° (1986)

Sat, 1450° / 34°

0.07

50 °

Tonica, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high50°

Average low34°

Average precipitation0.07 in

Chance of precipitation32%

Record high73° (1971)

Record low14° (1986)

Sun, 1549° / 35°

0.08

49 °

Tonica, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.08 in

Chance of precipitation28%

Record high69° (2025)

Record low19° (1982)

Mon, 1649° / 34°

0.06

49 °

Tonica, Monday, 16 November

Climate normal for this date — 60-year average.

Average high49°

Average low34°

Average precipitation0.06 in

Chance of precipitation20%

Record high70° (1971)

Record low21° (1997)

Tue, 1750° / 35°

0.11

50 °

Tonica, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high50°

Average low35°

Average precipitation0.11 in

Chance of precipitation25%

Record high74° (2016)

Record low15° (2005)

Wed, 1850° / 35°

0.12

50 °

Tonica, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high50°

Average low35°

Average precipitation0.12 in

Chance of precipitation30%

Record high70° (1999)

Record low12° (2014)

Thu, 1949° / 35°

0.07

49 °

Tonica, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high49°

Average low35°

Average precipitation0.07 in

Chance of precipitation28%

Record high68° (1979)

Record low16° (2018)

Fri, 2048° / 34°

0.09

48 °

Tonica, Friday, 20 November

Climate normal for this date — 60-year average.

Average high48°

Average low34°

Average precipitation0.09 in

Chance of precipitation32%

Record high67° (2007)

Record low15° (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 Tonica, 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 Tonica, 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.