As of 23:16 CDT

Weather in Marine, IL

75°

Marine, Monday, 12 October, 23:16

Clear. Feels like 75°. High 91°, low 63°.

Pressure29.85 inHg

Wind4 mph SW

Humidity67%

Visibility6.2 mi

Dew point63°

See detailed hourly forecast

Monthly outlook for Marine, IL: average high 73°, average low 54.5°. That is 4.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.9 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 13 October (94.1°), the coolest 17 October (42.1°).

73°/54.5°

Average high / low

+4.4°

Above normal

3 / 5

Wet days / normal

0.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
12 October – 21 October	76.5°	66.3°	+5.7°
22 October – 31 October	67.2°	62.6°	+2.6°
1 November – 10 November	at normal	58°	—

October records over 66 years

91.4°1 October 2019All-time high

28.6°24 October 1981All-time low

Climate normals and records are computed from the nearest reference point — Edwardsville (11 mi).

Tue, 1394° / 66°

94 °

Marine, Tuesday, 13 October

Clear. High 94°, low 66°.

Pressure29.91 inHg

Wind6.9 mph SW

Humidity52%

Visibility6.2 mi

Dew point66°

Wed, 1485° / 67°

0.24

85 °

Marine, Wednesday, 14 October

Rain. High 85°, low 67°.

Pressure30.00 inHg

Wind1 mph NW

Humidity77%

Visibility6.2 mi

Dew point71°

Thu, 1581° / 71°

0.33

81 °

Marine, Thursday, 15 October

Rain. High 81°, low 71°.

Pressure30.00 inHg

Wind9.4 mph SW

Humidity85%

Visibility2.7 mi

Dew point71°

Fri, 1664° / 51°

0.03

64 °

Marine, Friday, 16 October

Light rain. High 64°, low 51°.

Pressure30.33 inHg

Wind19.3 mph NW

Humidity41%

Visibility6.2 mi

Dew point34°

Sat, 1760° / 42°

60 °

Marine, Saturday, 17 October

Clear. High 60°, low 42°.

Pressure30.50 inHg

Wind6.6 mph N

Humidity44%

Visibility—

Dew point35°

Sun, 1868° / 44°

68 °

Marine, Sunday, 18 October

Overcast. High 68°, low 44°.

Pressure30.30 inHg

Wind8.5 mph S

Humidity36%

Visibility—

Dew point34°

Mon, 1972° / 51°

72 °

Marine, Monday, 19 October

Overcast. High 72°, low 51°.

Pressure30.21 inHg

Wind10.4 mph S

Humidity47%

Visibility—

Dew point47°

Tue, 2075° / 60°

0.03

75 °

Marine, Tuesday, 20 October

Light rain. High 75°, low 60°.

Pressure30.15 inHg

Wind10.3 mph SE

Humidity66%

Visibility—

Dew point58°

Wed, 2174° / 58°

74 °

Marine, Wednesday, 21 October

Overcast. High 74°, low 58°.

Pressure30.15 inHg

Wind13.7 mph SE

Humidity61%

Visibility—

Dew point56°

Thu, 2281° / 61°

81 °

Marine, Thursday, 22 October

Overcast. High 81°, low 61°.

Pressure30.03 inHg

Wind22.7 mph S

Humidity45%

Visibility—

Dew point55°

Fri, 2371° / 55°

0.26

71 °

Marine, Friday, 23 October

Rain. High 71°, low 55°.

Pressure30.12 inHg

Wind21.8 mph S

Humidity52%

Visibility—

Dew point49°

Sat, 2466° / 49°

66 °

Marine, Saturday, 24 October

Overcast. High 66°, low 49°.

Pressure30.33 inHg

Wind9.4 mph N

Humidity40%

Visibility—

Dew point38°

Sun, 2561° / 47°

61 °

Marine, Sunday, 25 October

Clear. High 61°, low 47°.

Pressure30.30 inHg

Wind12.6 mph N

Humidity33%

Visibility—

Dew point30°

Mon, 2657° / 44°

57 °

Marine, Monday, 26 October

Overcast. High 57°, low 44°.

Pressure30.12 inHg

Wind9.3 mph W

Humidity53%

Visibility—

Dew point37°

Tue, 2768° / 44°

0.01

68 °

Marine, Tuesday, 27 October

Light rain. High 68°, low 44°.

Pressure29.74 inHg

Wind16.4 mph W

Humidity44%

Visibility—

Dew point40°

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

Wed, 2861° / 46°

0.05

61 °

Marine, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high61°

Average low46°

Average precipitation0.05 in

Chance of precipitation22%

Record high78° (1999)

Record low32° (1969)

Thu, 2961° / 46°

0.11

61 °

Marine, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high61°

Average low46°

Average precipitation0.11 in

Chance of precipitation30%

Record high81° (2004)

Record low31° (1980)

Fri, 3063° / 47°

0.12

63 °

Marine, Friday, 30 October

Climate normal for this date — 60-year average.

Average high63°

Average low47°

Average precipitation0.12 in

Chance of precipitation30%

Record high79° (1971)

Record low29° (1980)

Sat, 3162° / 47°

0.15

62 °

Marine, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high62°

Average low47°

Average precipitation0.15 in

Chance of precipitation38%

Record high79° (1968)

Record low29° (1993)

Sun, 0161° / 46°

0.18

61 °

Marine, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high61°

Average low46°

Average precipitation0.18 in

Chance of precipitation30%

Record high79° (2016)

Record low27° (1993)

Mon, 0260° / 45°

0.08

60 °

Marine, Monday, 2 November

Climate normal for this date — 60-year average.

Average high60°

Average low45°

Average precipitation0.08 in

Chance of precipitation30%

Record high79° (2016)

Record low27° (1966)

Tue, 0358° / 44°

0.11

58 °

Marine, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high58°

Average low44°

Average precipitation0.11 in

Chance of precipitation30%

Record high78° (1987)

Record low20° (1991)

Wed, 0457° / 45°

0.16

57 °

Marine, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high57°

Average low45°

Average precipitation0.16 in

Chance of precipitation28%

Record high76° (2022)

Record low20° (1991)

Thu, 0558° / 43°

0.16

58 °

Marine, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.16 in

Chance of precipitation30%

Record high76° (1978)

Record low24° (1991)

Fri, 0657° / 42°

0.09

57 °

Marine, Friday, 6 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.09 in

Chance of precipitation33%

Record high77° (2023)

Record low28° (1982)

Sat, 0757° / 42°

0.08

57 °

Marine, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.08 in

Chance of precipitation22%

Record high74° (1980)

Record low17° (1991)

Sun, 0857° / 42°

0.04

57 °

Marine, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.04 in

Chance of precipitation17%

Record high80° (2023)

Record low4° (1991)

Mon, 0958° / 43°

0.1

58 °

Marine, Monday, 9 November

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.1 in

Chance of precipitation30%

Record high76° (2022)

Record low8° (1991)

Tue, 1056° / 41°

0.13

56 °

Marine, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high56°

Average low41°

Average precipitation0.13 in

Chance of precipitation30%

Record high74° (2020)

Record low20° (2018)

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 Marine, 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 Marine, 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.