As of 07:04 CDT

Weather in Alpine, IL

54°

Alpine, Wednesday, 7 October, 07:04

Mostly clear. Feels like 53°. High 78°, low 54°.

Pressure29.80 inHg

Wind6.9 mph S

Humidity81%

Visibility6.2 mi

Dew point49°

See detailed hourly forecast

Monthly outlook for Alpine, IL: average high 63.6°, average low 48.5°. That is 0.9° above the climate normal for October. Precipitation is expected on 4 days (about 2.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 10 October (79.2°), the coolest 18 October (35.9°).

63.6°/48.5°

Average high / low

+0.9°

Above normal

4 / 5

Wet days / normal

2.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
7 October – 16 October	68.9°	63.4°	+3.1°
17 October – 26 October	54.8°	58.7°	-2.2°
27 October – 5 November	at normal	55°	—

October records over 66 years

86.7°7 October 2007All-time high

23.9°26 October 1962All-time low

Climate normals and records are computed from the nearest reference point — Orland Hills (2 mi).

Thu, 0871° / 52°

71 °

Alpine, Thursday, 8 October

Clear. High 71°, low 52°.

Pressure30.09 inHg

Wind6 mph NW

Humidity46%

Visibility6.2 mi

Dew point45°

Fri, 0970° / 49°

0.01

70 °

Alpine, Friday, 9 October

Light rain. High 70°, low 49°.

Pressure30.18 inHg

Wind8 mph SE

Humidity52%

Visibility6.2 mi

Dew point48°

Sat, 1079° / 59°

79 °

Alpine, Saturday, 10 October

Clear. High 79°, low 59°.

Pressure30.12 inHg

Wind8 mph S

Humidity53%

Visibility6.2 mi

Dew point56°

Sun, 1165° / 58°

0.18

65 °

Alpine, Sunday, 11 October

Rain. High 65°, low 58°.

Pressure29.85 inHg

Wind7.3 mph SE

Humidity75%

Visibility—

Dew point56°

Mon, 1277° / 52°

0.01

77 °

Alpine, Monday, 12 October

Light rain. High 77°, low 52°.

Pressure29.77 inHg

Wind8.9 mph W

Humidity62%

Visibility—

Dew point59°

Tue, 1359° / 52°

0.05

59 °

Alpine, Tuesday, 13 October

Light rain. High 59°, low 52°.

Pressure30.03 inHg

Wind10.5 mph N

Humidity70%

Visibility—

Dew point46°

Wed, 1457° / 43°

57 °

Alpine, Wednesday, 14 October

Overcast. High 57°, low 43°.

Pressure30.15 inHg

Wind15.4 mph SE

Humidity49%

Visibility—

Dew point36°

Thu, 1577° / 54°

1.73

77 °

Alpine, Thursday, 15 October

Heavy rain. High 77°, low 54°.

Pressure29.77 inHg

Wind16 mph S

Humidity55%

Visibility—

Dew point55°

Fri, 1655° / 46°

0.01

55 °

Alpine, Friday, 16 October

Light rain. High 55°, low 46°.

Pressure30.06 inHg

Wind13.1 mph NW

Humidity51%

Visibility—

Dew point35°

Sat, 1746° / 42°

46 °

Alpine, Saturday, 17 October

Overcast. High 46°, low 42°.

Pressure30.18 inHg

Wind11.7 mph NW

Humidity63%

Visibility—

Dew point32°

Sun, 1850° / 36°

50 °

Alpine, Sunday, 18 October

Partly cloudy. High 50°, low 36°.

Pressure30.24 inHg

Wind10.5 mph W

Humidity37%

Visibility—

Dew point22°

Mon, 1957° / 40°

57 °

Alpine, Monday, 19 October

Partly cloudy. High 57°, low 40°.

Pressure30.27 inHg

Wind8.4 mph SW

Humidity41%

Visibility—

Dew point30°

Tue, 2060° / 46°

60 °

Alpine, Tuesday, 20 October

Partly cloudy. High 60°, low 46°.

Pressure30.47 inHg

Wind7.6 mph NE

Humidity38%

Visibility—

Dew point33°

Wed, 2159° / 45°

0.09

59 °

Alpine, Wednesday, 21 October

Light rain. High 59°, low 45°.

Pressure30.30 inHg

Wind7.7 mph W

Humidity45%

Visibility—

Dew point36°

Thu, 2256° / 47°

0.02

56 °

Alpine, Thursday, 22 October

Light rain. High 56°, low 47°.

Pressure30.06 inHg

Wind10.4 mph NW

Humidity41%

Visibility—

Dew point32°

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

Fri, 2359° / 45°

0.11

59 °

Alpine, Friday, 23 October

Climate normal for this date — 60-year average.

Average high59°

Average low45°

Average precipitation0.11 in

Chance of precipitation32%

Record high79° (1963)

Record low30° (1976)

Sat, 2458° / 45°

0.12

58 °

Alpine, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high58°

Average low45°

Average precipitation0.12 in

Chance of precipitation37%

Record high78° (1963)

Record low24° (1981)

Sun, 2557° / 44°

0.12

57 °

Alpine, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high57°

Average low44°

Average precipitation0.12 in

Chance of precipitation28%

Record high75° (1963)

Record low29° (2006)

Mon, 2656° / 44°

0.11

56 °

Alpine, Monday, 26 October

Climate normal for this date — 60-year average.

Average high56°

Average low44°

Average precipitation0.11 in

Chance of precipitation32%

Record high79° (1963)

Record low24° (1962)

Tue, 2756° / 43°

0.09

56 °

Alpine, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high56°

Average low43°

Average precipitation0.09 in

Chance of precipitation32%

Record high74° (2014)

Record low29° (1962)

Wed, 2856° / 42°

0.06

56 °

Alpine, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.06 in

Chance of precipitation20%

Record high74° (1999)

Record low28° (1976)

Thu, 2956° / 42°

0.06

56 °

Alpine, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.06 in

Chance of precipitation20%

Record high78° (2024)

Record low27° (1980)

Fri, 3058° / 43°

0.11

58 °

Alpine, Friday, 30 October

Climate normal for this date — 60-year average.

Average high58°

Average low43°

Average precipitation0.11 in

Chance of precipitation28%

Record high77° (2024)

Record low27° (1980)

Sat, 3156° / 44°

0.14

56 °

Alpine, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high56°

Average low44°

Average precipitation0.14 in

Chance of precipitation38%

Record high74° (1974)

Record low27° (2023)

Sun, 0155° / 42°

0.17

55 °

Alpine, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.17 in

Chance of precipitation42%

Record high74° (2016)

Record low22° (2019)

Mon, 0254° / 41°

0.12

54 °

Alpine, Monday, 2 November

Climate normal for this date — 60-year average.

Average high54°

Average low41°

Average precipitation0.12 in

Chance of precipitation40%

Record high74° (1961)

Record low24° (1991)

Tue, 0353° / 40°

0.07

53 °

Alpine, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.07 in

Chance of precipitation22%

Record high73° (1987)

Record low18° (1991)

Wed, 0453° / 42°

0.09

53 °

Alpine, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high53°

Average low42°

Average precipitation0.09 in

Chance of precipitation28%

Record high71° (2015)

Record low18° (1991)

Thu, 0553° / 40°

0.12

53 °

Alpine, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high53°

Average low40°

Average precipitation0.12 in

Chance of precipitation30%

Record high75° (1978)

Record low19° (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 Alpine, 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 Alpine, 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.