As of 21:21 CDT

Weather in Marine, IL

62°

Marine, Saturday, 10 October, 21:21

Overcast. Feels like 61°. High 79°, low 56°.

Pressure30.00 inHg

Wind4.9 mph SE

Humidity74%

Visibility6.2 mi

Dew point53°

See detailed hourly forecast

Monthly outlook for Marine, IL: average high 69.7°, average low 49.8°. That is 2° above the climate normal for October. Precipitation is expected on 4 days (about 1.9 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 12 October (91.8°), the coolest 18 October (30.5°).

69.7°/49.8°

Average high / low

+2°

Above normal

4 / 5

Wet days / normal

1.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	71.9°	67°	+2.8°
20 October – 29 October	65.9°	63.2°	+1.5°
30 October – 8 November	at normal	59°	—

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).

Sun, 1186° / 51°

86 °

Marine, Sunday, 11 October

Clear. High 86°, low 51°.

Pressure30.00 inHg

Wind2.8 mph S

Humidity48%

Visibility6.2 mi

Dew point55°

Mon, 1292° / 61°

92 °

Marine, Monday, 12 October

Clear. High 92°, low 61°.

Pressure29.94 inHg

Wind9 mph SW

Humidity44%

Visibility6.2 mi

Dew point60°

Tue, 1391° / 69°

91 °

Marine, Tuesday, 13 October

Clear. High 91°, low 69°.

Pressure29.91 inHg

Wind7.5 mph SW

Humidity48%

Visibility6.2 mi

Dew point64°

Wed, 1481° / 71°

0.08

81 °

Marine, Wednesday, 14 October

Light rain. High 81°, low 71°.

Pressure30.00 inHg

Wind5 mph W

Humidity73%

Visibility6.2 mi

Dew point70°

Thu, 1570° / 62°

0.46

70 °

Marine, Thursday, 15 October

Rain. High 70°, low 62°.

Pressure30.18 inHg

Wind11.3 mph NE

Humidity73%

Visibility—

Dew point58°

Fri, 1663° / 43°

0.93

63 °

Marine, Friday, 16 October

Heavy rain. High 63°, low 43°.

Pressure30.30 inHg

Wind19.8 mph NW

Humidity47%

Visibility—

Dew point42°

Sat, 1745° / 35°

45 °

Marine, Saturday, 17 October

Partly cloudy. High 45°, low 35°.

Pressure30.50 inHg

Wind20.6 mph NW

Humidity38%

Visibility—

Dew point19°

Sun, 1851° / 30°

51 °

Marine, Sunday, 18 October

Mostly clear. High 51°, low 30°.

Pressure30.65 inHg

Wind7.8 mph SE

Humidity32%

Visibility—

Dew point18°

Mon, 1960° / 36°

60 °

Marine, Monday, 19 October

Clear. High 60°, low 36°.

Pressure30.50 inHg

Wind10.8 mph S

Humidity28%

Visibility—

Dew point22°

Tue, 2066° / 41°

66 °

Marine, Tuesday, 20 October

Clear. High 66°, low 41°.

Pressure30.36 inHg

Wind9.4 mph S

Humidity24%

Visibility—

Dew point23°

Wed, 2171° / 45°

71 °

Marine, Wednesday, 21 October

Clear. High 71°, low 45°.

Pressure30.18 inHg

Wind13.8 mph SW

Humidity26%

Visibility—

Dew point29°

Thu, 2271° / 51°

71 °

Marine, Thursday, 22 October

Clear. High 71°, low 51°.

Pressure30.15 inHg

Wind9.8 mph NW

Humidity40%

Visibility—

Dew point42°

Fri, 2367° / 47°

67 °

Marine, Friday, 23 October

Clear. High 67°, low 47°.

Pressure30.30 inHg

Wind6.7 mph N

Humidity39%

Visibility—

Dew point37°

Sat, 2458° / 51°

58 °

Marine, Saturday, 24 October

Overcast. High 58°, low 51°.

Pressure30.33 inHg

Wind7.9 mph E

Humidity53%

Visibility—

Dew point39°

Sun, 2562° / 48°

0.39

62 °

Marine, Sunday, 25 October

Rain. High 62°, low 48°.

Pressure30.27 inHg

Wind10.9 mph E

Humidity79%

Visibility—

Dew point44°

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

Mon, 2661° / 47°

0.15

61 °

Marine, Monday, 26 October

Climate normal for this date — 60-year average.

Average high61°

Average low47°

Average precipitation0.15 in

Chance of precipitation38%

Record high82° (1963)

Record low29° (1962)

Tue, 2762° / 47°

0.1

62 °

Marine, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high62°

Average low47°

Average precipitation0.1 in

Chance of precipitation23%

Record high79° (2023)

Record low33° (2001)

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)

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.