As of 02:36 CDT

Weather in Tonica, IL

51°

Tonica, Tuesday, 27 October, 02:36

Overcast. Feels like 50°. High 71°, low 50°.

Pressure30.27 inHg

Wind5.5 mph E

Humidity90%

Visibility6.2 mi

Dew point48°

See detailed hourly forecast

Monthly outlook for Tonica, IL: average high 57.1°, average low 45.3°. That is 1.2° above the climate normal for October. Precipitation is expected on 6 days (about 3.9 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 28 October (75.9°), the coolest 7 November (28.5°).

57.1°/45.3°

Average high / low

+1.2°

Above normal

6 / 4

Wet days / normal

3.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
27 October – 5 November	65.3°	56.5°	+4.9°
6 November – 15 November	43.4°	51°	-4.2°
16 November – 25 November	at normal	47.4°	—

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).

Wed, 2876° / 52°

76 °

Tonica, Wednesday, 28 October

Clear. High 76°, low 52°.

Pressure30.18 inHg

Wind7.7 mph S

Humidity54%

Visibility6.2 mi

Dew point53°

Thu, 2969° / 54°

0.01

69 °

Tonica, Thursday, 29 October

Light rain. High 69°, low 54°.

Pressure30.09 inHg

Wind9.4 mph SW

Humidity65%

Visibility6.2 mi

Dew point57°

Fri, 3068° / 46°

68 °

Tonica, Friday, 30 October

Overcast. High 68°, low 46°.

Pressure30.24 inHg

Wind5.9 mph SE

Humidity62%

Visibility6.2 mi

Dew point49°

Sat, 3167° / 57°

0.44

67 °

Tonica, Saturday, 31 October

Rain. High 67°, low 57°.

Pressure30.15 inHg

Wind6.8 mph S

Humidity78%

Visibility—

Dew point58°

Sun, 0167° / 55°

0.13

67 °

Tonica, Sunday, 1 November

Light rain. High 67°, low 55°.

Pressure29.97 inHg

Wind8.1 mph NW

Humidity77%

Visibility—

Dew point56°

Mon, 0260° / 53°

60 °

Tonica, Monday, 2 November

Overcast. High 60°, low 53°.

Pressure29.85 inHg

Wind14.9 mph E

Humidity73%

Visibility—

Dew point51°

Tue, 0362° / 57°

1.11

62 °

Tonica, Tuesday, 3 November

Heavy rain. High 62°, low 57°.

Pressure29.80 inHg

Wind21.3 mph SE

Humidity90%

Visibility—

Dew point59°

Wed, 0461° / 50°

1.31

61 °

Tonica, Wednesday, 4 November

Heavy rain. High 61°, low 50°.

Pressure29.56 inHg

Wind24.1 mph E

Humidity78%

Visibility—

Dew point47°

Thu, 0551° / 36°

0.08

51 °

Tonica, Thursday, 5 November

Light rain. High 51°, low 36°.

Pressure29.50 inHg

Wind25.8 mph W

Humidity94%

Visibility—

Dew point37°

Fri, 0638° / 31°

0.01

38 °

Tonica, Friday, 6 November

Light snow. High 38°, low 31°.

Pressure29.83 inHg

Wind21.5 mph NW

Humidity74%

Visibility—

Dew point29°

Sat, 0740° / 28°

40 °

Tonica, Saturday, 7 November

Clear. High 40°, low 28°.

Pressure30.12 inHg

Wind12.8 mph NW

Humidity49%

Visibility—

Dew point20°

Sun, 0846° / 30°

46 °

Tonica, Sunday, 8 November

Overcast. High 46°, low 30°.

Pressure30.09 inHg

Wind14.5 mph S

Humidity42%

Visibility—

Dew point21°

Mon, 0949° / 46°

0.82

49 °

Tonica, Monday, 9 November

Rain. High 49°, low 46°.

Pressure29.62 inHg

Wind15.6 mph S

Humidity95%

Visibility—

Dew point45°

Tue, 1046° / 40°

46 °

Tonica, Tuesday, 10 November

Overcast. High 46°, low 40°.

Pressure29.77 inHg

Wind12.7 mph NW

Humidity63%

Visibility—

Dew point33°

Wed, 1141° / 39°

41 °

Tonica, Wednesday, 11 November

Overcast. High 41°, low 39°.

Pressure30.00 inHg

Wind12.8 mph N

Humidity55%

Visibility—

Dew point26°

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

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)

Wed, 2545° / 31°

0.07

45 °

Tonica, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high45°

Average low31°

Average precipitation0.07 in

Chance of precipitation30%

Record high64° (2006)

Record low12° (1977)

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.