As of 02:38 CDT

Weather in Tonica, IL

56°

Tonica, Monday, 26 October, 02:38

Overcast. Feels like 55°. High 69°, low 52°.

Pressure30.33 inHg

Wind3 mph SW

Humidity73%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Monthly outlook for Tonica, IL: average high 60.8°, average low 47°. That is 2.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 29 October (71.7°), the coolest 9 November (33.5°).

60.8°/47°

Average high / low

+2.9°

Above normal

4 / 4

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
26 October – 4 November	65.1°	56.9°	+4.5°
5 November – 14 November	53.7°	51.5°	+1.2°
15 November – 24 November	at normal	47.8°	—

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).

Tue, 2771° / 50°

71 °

Tonica, Tuesday, 27 October

Overcast. High 71°, low 50°.

Pressure30.24 inHg

Wind5.2 mph SE

Humidity64%

Visibility6.2 mi

Dew point53°

Wed, 2871° / 54°

71 °

Tonica, Wednesday, 28 October

Clear. High 71°, low 54°.

Pressure30.18 inHg

Wind5.4 mph S

Humidity56%

Visibility6.2 mi

Dew point53°

Thu, 2972° / 56°

0.06

72 °

Tonica, Thursday, 29 October

Rain. High 72°, low 56°.

Pressure30.09 inHg

Wind8.7 mph SW

Humidity63%

Visibility6.2 mi

Dew point55°

Fri, 3070° / 51°

70 °

Tonica, Friday, 30 October

Overcast. High 70°, low 51°.

Pressure30.15 inHg

Wind6.8 mph E

Humidity61%

Visibility—

Dew point52°

Sat, 3166° / 55°

0.02

66 °

Tonica, Saturday, 31 October

Light rain. High 66°, low 55°.

Pressure30.15 inHg

Wind8 mph E

Humidity59%

Visibility—

Dew point50°

Sun, 0166° / 50°

66 °

Tonica, Sunday, 1 November

Overcast. High 66°, low 50°.

Pressure30.06 inHg

Wind7.9 mph E

Humidity48%

Visibility—

Dew point43°

Mon, 0256° / 53°

0.06

56 °

Tonica, Monday, 2 November

Light rain. High 56°, low 53°.

Pressure29.88 inHg

Wind9.7 mph NE

Humidity64%

Visibility—

Dew point44°

Tue, 0361° / 48°

61 °

Tonica, Tuesday, 3 November

Overcast. High 61°, low 48°.

Pressure30.06 inHg

Wind6.3 mph W

Humidity55%

Visibility—

Dew point43°

Wed, 0449° / 43°

49 °

Tonica, Wednesday, 4 November

Overcast. High 49°, low 43°.

Pressure30.30 inHg

Wind14.7 mph NE

Humidity74%

Visibility—

Dew point40°

Thu, 0548° / 35°

48 °

Tonica, Thursday, 5 November

Overcast. High 48°, low 35°.

Pressure30.50 inHg

Wind10.2 mph NE

Humidity37%

Visibility—

Dew point20°

Fri, 0654° / 35°

54 °

Tonica, Friday, 6 November

Mostly clear. High 54°, low 35°.

Pressure30.21 inHg

Wind13.9 mph S

Humidity31%

Visibility—

Dew point20°

Sat, 0754° / 48°

0.38

54 °

Tonica, Saturday, 7 November

Rain. High 54°, low 48°.

Pressure29.85 inHg

Wind19.6 mph S

Humidity84%

Visibility—

Dew point44°

Sun, 0855° / 39°

0.06

55 °

Tonica, Sunday, 8 November

Light rain. High 55°, low 39°.

Pressure30.15 inHg

Wind19.1 mph NW

Humidity62%

Visibility—

Dew point36°

Mon, 0951° / 34°

51 °

Tonica, Monday, 9 November

Mostly clear. High 51°, low 34°.

Pressure30.33 inHg

Wind10.4 mph S

Humidity50%

Visibility—

Dew point28°

Tue, 1059° / 50°

0.03

59 °

Tonica, Tuesday, 10 November

Light rain. High 59°, low 50°.

Pressure29.88 inHg

Wind13 mph S

Humidity65%

Visibility—

Dew point46°

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

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)

Sat, 2146° / 32°

0.1

46 °

Tonica, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high46°

Average low32°

Average precipitation0.1 in

Chance of precipitation30%

Record high68° (1990)

Record low9° (1964)

Sun, 2247° / 31°

0.04

47 °

Tonica, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high47°

Average low31°

Average precipitation0.04 in

Chance of precipitation22%

Record high71° (2010)

Record low2° (2015)

Mon, 2346° / 32°

0.07

46 °

Tonica, Monday, 23 November

Climate normal for this date — 60-year average.

Average high46°

Average low32°

Average precipitation0.07 in

Chance of precipitation25%

Record high66° (2003)

Record low12° (1970)

Tue, 2445° / 31°

0.08

45 °

Tonica, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high45°

Average low31°

Average precipitation0.08 in

Chance of precipitation23%

Record high67° (1966)

Record low12° (1970)

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.