As of 02:19 CST

Weather in Lemont, IL

42°

Lemont, Friday, 6 November, 02:19

Overcast. Feels like 36°. High 47°, low 35°.

Pressure30.03 inHg

Wind10.4 mph N

Humidity82%

Visibility6.2 mi

Dew point37°

See detailed hourly forecast

Monthly outlook for Lemont, IL: average high 52.1°, average low 40.2°. That is 2° above the climate normal for November. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 17 November (61.8°), the coolest 7 November (32.9°).

52.1°/40.2°

Average high / low

+2°

Above normal

1 / 5

Wet days / normal

0.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
6 November – 15 November	51°	49.6°	+0.7°
16 November – 25 November	54.1°	45.8°	+4.6°
26 November – 5 December	at normal	40.8°	—

November records over 66 years

75.2°5 November 1978All-time high

2.7°13 November 2019All-time low

Climate normals and records are computed from the nearest reference point — Orland Hills (9 mi).

Sat, 0749° / 33°

49 °

Lemont, Saturday, 7 November

Overcast. High 49°, low 33°.

Pressure30.21 inHg

Wind5.4 mph W

Humidity58%

Visibility6.2 mi

Dew point34°

Sun, 0858° / 39°

58 °

Lemont, Sunday, 8 November

Clear. High 58°, low 39°.

Pressure30.03 inHg

Wind10 mph W

Humidity63%

Visibility6.2 mi

Dew point44°

Mon, 0958° / 37°

58 °

Lemont, Monday, 9 November

Mostly clear. High 58°, low 37°.

Pressure30.15 inHg

Wind5.8 mph SW

Humidity61%

Visibility6.2 mi

Dew point41°

Tue, 1061° / 46°

61 °

Lemont, Tuesday, 10 November

Clear. High 61°, low 46°.

Pressure30.03 inHg

Wind9.8 mph W

Humidity71%

Visibility—

Dew point48°

Wed, 1155° / 39°

55 °

Lemont, Wednesday, 11 November

Overcast. High 55°, low 39°.

Pressure30.00 inHg

Wind6.7 mph N

Humidity47%

Visibility—

Dew point33°

Thu, 1247° / 40°

47 °

Lemont, Thursday, 12 November

Overcast. High 47°, low 40°.

Pressure30.09 inHg

Wind8.5 mph NW

Humidity39%

Visibility—

Dew point23°

Fri, 1342° / 35°

42 °

Lemont, Friday, 13 November

Overcast. High 42°, low 35°.

Pressure30.00 inHg

Wind9.3 mph N

Humidity35%

Visibility—

Dew point15°

Sat, 1444° / 34°

0.02

44 °

Lemont, Saturday, 14 November

Snow. High 44°, low 34°.

Pressure30.24 inHg

Wind8.4 mph N

Humidity50%

Visibility—

Dew point25°

Sun, 1549° / 35°

49 °

Lemont, Sunday, 15 November

Clear. High 49°, low 35°.

Pressure30.36 inHg

Wind6.3 mph S

Humidity40%

Visibility—

Dew point22°

Mon, 1659° / 41°

59 °

Lemont, Monday, 16 November

Partly cloudy. High 59°, low 41°.

Pressure30.30 inHg

Wind14.2 mph SW

Humidity53%

Visibility—

Dew point38°

Tue, 1762° / 46°

62 °

Lemont, Tuesday, 17 November

Overcast. High 62°, low 46°.

Pressure30.30 inHg

Wind10.9 mph S

Humidity53%

Visibility—

Dew point41°

Wed, 1858° / 49°

58 °

Lemont, Wednesday, 18 November

Overcast. High 58°, low 49°.

Pressure30.00 inHg

Wind15.4 mph SW

Humidity45%

Visibility—

Dew point35°

Thu, 1952° / 44°

52 °

Lemont, Thursday, 19 November

Overcast. High 52°, low 44°.

Pressure30.21 inHg

Wind8.7 mph NW

Humidity54%

Visibility—

Dew point34°

Fri, 2046° / 43°

0.3

46 °

Lemont, Friday, 20 November

Rain. High 46°, low 43°.

Pressure30.03 inHg

Wind6.1 mph E

Humidity86%

Visibility—

Dew point41°

Sat, 2148° / 46°

0.02

48 °

Lemont, Saturday, 21 November

Light rain. High 48°, low 46°.

Pressure29.65 inHg

Wind11.7 mph NE

Humidity90%

Visibility—

Dew point45°

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

Sun, 2245° / 31°

0.05

45 °

Lemont, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high45°

Average low31°

Average precipitation0.05 in

Chance of precipitation22%

Record high68° (2010)

Record low8° (2015)

Mon, 2345° / 32°

0.09

45 °

Lemont, Monday, 23 November

Climate normal for this date — 60-year average.

Average high45°

Average low32°

Average precipitation0.09 in

Chance of precipitation28%

Record high64° (2003)

Record low13° (1970)

Tue, 2443° / 31°

0.08

43 °

Lemont, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high43°

Average low31°

Average precipitation0.08 in

Chance of precipitation33%

Record high66° (1966)

Record low14° (1970)

Wed, 2544° / 32°

0.08

44 °

Lemont, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high44°

Average low32°

Average precipitation0.08 in

Chance of precipitation38%

Record high60° (1966)

Record low16° (1977)

Thu, 2644° / 31°

0.11

44 °

Lemont, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high44°

Average low31°

Average precipitation0.11 in

Chance of precipitation40%

Record high63° (1990)

Record low5° (1977)

Fri, 2743° / 32°

0.22

43 °

Lemont, Friday, 27 November

Climate normal for this date — 60-year average.

Average high43°

Average low32°

Average precipitation0.22 in

Chance of precipitation47%

Record high66° (1990)

Record low15° (1977)

Sat, 2841° / 29°

0.13

41 °

Lemont, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high41°

Average low29°

Average precipitation0.13 in

Chance of precipitation27%

Record high64° (1990)

Record low5° (2018)

Sun, 2941° / 29°

0.07

41 °

Lemont, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high41°

Average low29°

Average precipitation0.07 in

Chance of precipitation33%

Record high65° (1998)

Record low8° (1976)

Mon, 3042° / 29°

0.09

42 °

Lemont, Monday, 30 November

Climate normal for this date — 60-year average.

Average high42°

Average low29°

Average precipitation0.09 in

Chance of precipitation32%

Record high64° (1998)

Record low12° (1964)

Tue, 0139° / 28°

0.15

39 °

Lemont, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high39°

Average low28°

Average precipitation0.15 in

Chance of precipitation38%

Record high64° (1970)

Record low12° (2025)

Wed, 0240° / 28°

0.06

40 °

Lemont, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high40°

Average low28°

Average precipitation0.06 in

Chance of precipitation30%

Record high68° (1982)

Record low10° (1976)

Thu, 0340° / 28°

0.1

40 °

Lemont, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high40°

Average low28°

Average precipitation0.1 in

Chance of precipitation33%

Record high68° (2012)

Record low8° (2006)

Fri, 0439° / 28°

0.07

39 °

Lemont, Friday, 4 December

Climate normal for this date — 60-year average.

Average high39°

Average low28°

Average precipitation0.07 in

Chance of precipitation27%

Record high65° (1998)

Record low-1° (1991)

Sat, 0539° / 26°

0.09

39 °

Lemont, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high39°

Average low26°

Average precipitation0.09 in

Chance of precipitation30%

Record high66° (2001)

Record low-2° (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 Lemont, 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 Lemont, 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.