As of 10:36 CST

Weather in Westchester, IL

41°

Westchester, Friday, 6 November, 10:36

Overcast. Feels like 33°. High 44°, low 34°.

Pressure30.18 inHg

Wind15 mph N

Humidity78%

Visibility6.2 mi

Dew point34°

See detailed hourly forecast

Monthly outlook for Westchester, IL: average high 54.5°, average low 44°. That is 3.4° above the climate normal for November. Precipitation is expected on 4 days (about 0.6 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 20 November (66.5°), the coolest 7 November (31.4°).

54.5°/44°

Average high / low

+3.4°

Above normal

4 / 5

Wet days / normal

0.6 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
6 November – 15 November	51.5°	49.5°	+1.1°
16 November – 25 November	59.6°	45.7°	+7.8°
26 November – 5 December	at normal	40.6°	—

November records over 66 years

74.8°5 November 1978All-time high

2.3°13 November 2019All-time low

Climate normals and records are computed from the nearest reference point — La Grange Park (2 mi).

Sat, 0749° / 31°

49 °

Westchester, Saturday, 7 November

Overcast. High 49°, low 31°.

Pressure30.18 inHg

Wind5.8 mph W

Humidity60%

Visibility6.2 mi

Dew point34°

Sun, 0858° / 39°

58 °

Westchester, Sunday, 8 November

Clear. High 58°, low 39°.

Pressure29.97 inHg

Wind9.7 mph W

Humidity66%

Visibility6.2 mi

Dew point44°

Mon, 0955° / 38°

55 °

Westchester, Monday, 9 November

Overcast. High 55°, low 38°.

Pressure30.12 inHg

Wind6.4 mph SW

Humidity64%

Visibility6.2 mi

Dew point42°

Tue, 1059° / 47°

59 °

Westchester, Tuesday, 10 November

Clear. High 59°, low 47°.

Pressure30.03 inHg

Wind9.6 mph SW

Humidity66%

Visibility—

Dew point45°

Wed, 1153° / 39°

0.13

53 °

Westchester, Wednesday, 11 November

Light rain. High 53°, low 39°.

Pressure29.97 inHg

Wind5.2 mph NW

Humidity58%

Visibility—

Dew point37°

Thu, 1245° / 40°

0.07

45 °

Westchester, Thursday, 12 November

Light rain. High 45°, low 40°.

Pressure30.21 inHg

Wind8.2 mph N

Humidity56%

Visibility—

Dew point29°

Fri, 1344° / 37°

44 °

Westchester, Friday, 13 November

Overcast. High 44°, low 37°.

Pressure30.06 inHg

Wind6.6 mph NW

Humidity44%

Visibility—

Dew point21°

Sat, 1448° / 38°

48 °

Westchester, Saturday, 14 November

Clear. High 48°, low 38°.

Pressure30.15 inHg

Wind6.4 mph W

Humidity43%

Visibility—

Dew point24°

Sun, 1558° / 41°

58 °

Westchester, Sunday, 15 November

Clear. High 58°, low 41°.

Pressure30.15 inHg

Wind10.9 mph SW

Humidity41%

Visibility—

Dew point29°

Mon, 1661° / 49°

61 °

Westchester, Monday, 16 November

Overcast. High 61°, low 49°.

Pressure30.12 inHg

Wind12.3 mph SW

Humidity43%

Visibility—

Dew point37°

Tue, 1755° / 50°

0.01

55 °

Westchester, Tuesday, 17 November

Light rain. High 55°, low 50°.

Pressure30.24 inHg

Wind9.2 mph SW

Humidity84%

Visibility—

Dew point46°

Wed, 1857° / 51°

57 °

Westchester, Wednesday, 18 November

Overcast. High 57°, low 51°.

Pressure30.42 inHg

Wind6.2 mph S

Humidity80%

Visibility—

Dew point48°

Thu, 1958° / 55°

0.09

58 °

Westchester, Thursday, 19 November

Light rain. High 58°, low 55°.

Pressure30.36 inHg

Wind8.5 mph S

Humidity75%

Visibility—

Dew point49°

Fri, 2066° / 55°

66 °

Westchester, Friday, 20 November

Overcast. High 66°, low 55°.

Pressure30.18 inHg

Wind9.8 mph SW

Humidity40%

Visibility—

Dew point38°

Sat, 2161° / 57°

0.26

61 °

Westchester, Saturday, 21 November

Rain. High 61°, low 57°.

Pressure30.03 inHg

Wind12.9 mph S

Humidity84%

Visibility—

Dew point53°

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

Sun, 2245° / 32°

0.05

45 °

Westchester, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high45°

Average low32°

Average precipitation0.05 in

Chance of precipitation18%

Record high68° (2010)

Record low8° (2015)

Mon, 2345° / 32°

0.09

45 °

Westchester, Monday, 23 November

Climate normal for this date — 60-year average.

Average high45°

Average low32°

Average precipitation0.09 in

Chance of precipitation28%

Record high65° (2003)

Record low13° (1970)

Tue, 2443° / 31°

0.07

43 °

Westchester, Tuesday, 24 November

Climate normal for this date — 60-year average.

Average high43°

Average low31°

Average precipitation0.07 in

Chance of precipitation30%

Record high66° (1966)

Record low14° (1970)

Wed, 2543° / 32°

0.09

43 °

Westchester, Wednesday, 25 November

Climate normal for this date — 60-year average.

Average high43°

Average low32°

Average precipitation0.09 in

Chance of precipitation37%

Record high60° (1966)

Record low16° (1977)

Thu, 2644° / 31°

0.13

44 °

Westchester, Thursday, 26 November

Climate normal for this date — 60-year average.

Average high44°

Average low31°

Average precipitation0.13 in

Chance of precipitation45%

Record high63° (1990)

Record low5° (1977)

Fri, 2743° / 32°

0.22

43 °

Westchester, 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 low12° (1977)

Sat, 2841° / 29°

0.13

41 °

Westchester, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high41°

Average low29°

Average precipitation0.13 in

Chance of precipitation28%

Record high64° (1990)

Record low5° (2018)

Sun, 2941° / 29°

0.08

41 °

Westchester, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high41°

Average low29°

Average precipitation0.08 in

Chance of precipitation32%

Record high65° (1998)

Record low8° (1976)

Mon, 3042° / 29°

0.09

42 °

Westchester, Monday, 30 November

Climate normal for this date — 60-year average.

Average high42°

Average low29°

Average precipitation0.09 in

Chance of precipitation28%

Record high65° (1998)

Record low12° (1976)

Tue, 0139° / 28°

0.16

39 °

Westchester, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high39°

Average low28°

Average precipitation0.16 in

Chance of precipitation40%

Record high64° (1970)

Record low8° (2025)

Wed, 0240° / 28°

0.07

40 °

Westchester, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high40°

Average low28°

Average precipitation0.07 in

Chance of precipitation33%

Record high68° (1982)

Record low9° (1976)

Thu, 0339° / 28°

0.09

39 °

Westchester, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high39°

Average low28°

Average precipitation0.09 in

Chance of precipitation33%

Record high68° (2012)

Record low6° (2006)

Fri, 0439° / 27°

0.07

39 °

Westchester, Friday, 4 December

Climate normal for this date — 60-year average.

Average high39°

Average low27°

Average precipitation0.07 in

Chance of precipitation27%

Record high65° (1998)

Record low-2° (1991)

Sat, 0539° / 26°

0.09

39 °

Westchester, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high39°

Average low26°

Average precipitation0.09 in

Chance of precipitation32%

Record high67° (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 Westchester, 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 Westchester, 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.