As of 15:52 CST

Weather in Deer Park, IL

41°

Deer Park, Thursday, 12 November, 15:52

Overcast. Feels like 33°. High 44°, low 39°.

Pressure29.97 inHg

Wind17.3 mph N

Humidity66%

Visibility6.2 mi

Dew point31°

See detailed hourly forecast

Monthly outlook for Deer Park, IL: average high 48.9°, average low 38.8°. That is 2.6° above the climate normal for November. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 24 November (60.5°), the coolest 27 November (26.2°).

48.9°/38.8°

Average high / low

+2.6°

Above normal

5 / 5

Wet days / normal

1.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
12 November – 21 November	50.1°	45.3°	+2.6°
22 November – 1 December	46.8°	41.4°	+3°
2 December – 11 December	at normal	36.8°	—

November records over 66 years

72.3°9 November 2020All-time high

6.6°12 November 2019All-time low

Climate normals and records are computed from the nearest reference point — Highwood (14 mi).

Fri, 1342° / 34°

42 °

Deer Park, Friday, 13 November

Overcast. High 42°, low 34°.

Pressure30.06 inHg

Wind12.5 mph N

Humidity66%

Visibility6.2 mi

Dew point27°

Sat, 1443° / 29°

43 °

Deer Park, Saturday, 14 November

Clear. High 43°, low 29°.

Pressure30.27 inHg

Wind7.4 mph NW

Humidity63%

Visibility6.2 mi

Dew point29°

Sun, 1546° / 29°

46 °

Deer Park, Sunday, 15 November

Clear. High 46°, low 29°.

Pressure30.45 inHg

Wind2.9 mph NW

Humidity61%

Visibility6.2 mi

Dew point32°

Mon, 1648° / 31°

48 °

Deer Park, Monday, 16 November

Clear. High 48°, low 31°.

Pressure30.47 inHg

Wind6.6 mph SW

Humidity55%

Visibility6.2 mi

Dew point32°

Tue, 1750° / 34°

50 °

Deer Park, Tuesday, 17 November

Clear. High 50°, low 34°.

Pressure30.45 inHg

Wind7.8 mph SW

Humidity58%

Visibility—

Dew point33°

Wed, 1854° / 37°

54 °

Deer Park, Wednesday, 18 November

Overcast. High 54°, low 37°.

Pressure30.27 inHg

Wind15.9 mph S

Humidity56%

Visibility—

Dew point33°

Thu, 1959° / 48°

0.18

59 °

Deer Park, Thursday, 19 November

Rain. High 59°, low 48°.

Pressure30.12 inHg

Wind14.7 mph SW

Humidity62%

Visibility—

Dew point44°

Fri, 2054° / 51°

0.07

54 °

Deer Park, Friday, 20 November

Light rain. High 54°, low 51°.

Pressure30.33 inHg

Wind5.1 mph E

Humidity75%

Visibility—

Dew point46°

Sat, 2160° / 51°

0.15

60 °

Deer Park, Saturday, 21 November

Light rain. High 60°, low 51°.

Pressure30.18 inHg

Wind13.1 mph SW

Humidity53%

Visibility—

Dew point41°

Sun, 2258° / 52°

0.01

58 °

Deer Park, Sunday, 22 November

Light rain. High 58°, low 52°.

Pressure30.03 inHg

Wind12 mph SW

Humidity62%

Visibility—

Dew point41°

Mon, 2360° / 58°

0.48

60 °

Deer Park, Monday, 23 November

Rain. High 60°, low 58°.

Pressure29.80 inHg

Wind21.2 mph S

Humidity87%

Visibility—

Dew point54°

Tue, 2460° / 40°

0.19

60 °

Deer Park, Tuesday, 24 November

Rain. High 60°, low 40°.

Pressure29.71 inHg

Wind23.2 mph S

Humidity64%

Visibility—

Dew point35°

Wed, 2537° / 32°

37 °

Deer Park, Wednesday, 25 November

Clear. High 37°, low 32°.

Pressure30.30 inHg

Wind14.8 mph W

Humidity46%

Visibility—

Dew point17°

Thu, 2634° / 29°

0.04

34 °

Deer Park, Thursday, 26 November

Light snow. High 34°, low 29°.

Pressure30.27 inHg

Wind6.8 mph W

Humidity75%

Visibility—

Dew point23°

Fri, 2731° / 26°

31 °

Deer Park, Friday, 27 November

Clear. High 31°, low 26°.

Pressure30.45 inHg

Wind12.6 mph W

Humidity42%

Visibility—

Dew point10°

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

Sat, 2840° / 31°

0.12

40 °

Deer Park, Saturday, 28 November

Climate normal for this date — 60-year average.

Average high40°

Average low31°

Average precipitation0.12 in

Chance of precipitation33%

Record high60° (1990)

Record low9° (2018)

Sun, 2940° / 31°

0.07

40 °

Deer Park, Sunday, 29 November

Climate normal for this date — 60-year average.

Average high40°

Average low31°

Average precipitation0.07 in

Chance of precipitation37%

Record high60° (1998)

Record low11° (1976)

Mon, 3041° / 31°

0.07

41 °

Deer Park, Monday, 30 November

Climate normal for this date — 60-year average.

Average high41°

Average low31°

Average precipitation0.07 in

Chance of precipitation30%

Record high60° (1998)

Record low14° (2024)

Tue, 0138° / 30°

0.15

38 °

Deer Park, Tuesday, 1 December

Climate normal for this date — 60-year average.

Average high38°

Average low30°

Average precipitation0.15 in

Chance of precipitation43%

Record high59° (1970)

Record low13° (2024)

Wed, 0239° / 30°

0.07

39 °

Deer Park, Wednesday, 2 December

Climate normal for this date — 60-year average.

Average high39°

Average low30°

Average precipitation0.07 in

Chance of precipitation30%

Record high60° (1982)

Record low10° (1976)

Thu, 0339° / 30°

0.09

39 °

Deer Park, Thursday, 3 December

Climate normal for this date — 60-year average.

Average high39°

Average low30°

Average precipitation0.09 in

Chance of precipitation38%

Record high61° (2012)

Record low13° (1976)

Fri, 0438° / 30°

0.06

38 °

Deer Park, Friday, 4 December

Climate normal for this date — 60-year average.

Average high38°

Average low30°

Average precipitation0.06 in

Chance of precipitation25%

Record high62° (2017)

Record low5° (2025)

Sat, 0538° / 29°

0.08

38 °

Deer Park, Saturday, 5 December

Climate normal for this date — 60-year average.

Average high38°

Average low29°

Average precipitation0.08 in

Chance of precipitation37%

Record high61° (2001)

Record low6° (1991)

Sun, 0637° / 27°

0.06

37 °

Deer Park, Sunday, 6 December

Climate normal for this date — 60-year average.

Average high37°

Average low27°

Average precipitation0.06 in

Chance of precipitation32%

Record high57° (2001)

Record low8° (1972)

Mon, 0735° / 27°

0.12

35 °

Deer Park, Monday, 7 December

Climate normal for this date — 60-year average.

Average high35°

Average low27°

Average precipitation0.12 in

Chance of precipitation28%

Record high51° (1980)

Record low7° (1972)

Tue, 0836° / 28°

0.08

36 °

Deer Park, Tuesday, 8 December

Climate normal for this date — 60-year average.

Average high36°

Average low28°

Average precipitation0.08 in

Chance of precipitation27%

Record high55° (2023)

Record low9° (2006)

Wed, 0937° / 27°

0.09

37 °

Deer Park, Wednesday, 9 December

Climate normal for this date — 60-year average.

Average high37°

Average low27°

Average precipitation0.09 in

Chance of precipitation43%

Record high52° (2023)

Record low0° (1995)

Thu, 1035° / 26°

0.09

35 °

Deer Park, Thursday, 10 December

Climate normal for this date — 60-year average.

Average high35°

Average low26°

Average precipitation0.09 in

Chance of precipitation23%

Record high55° (2015)

Record low3° (1978)

Fri, 1135° / 26°

0.11

35 °

Deer Park, Friday, 11 December

Climate normal for this date — 60-year average.

Average high35°

Average low26°

Average precipitation0.11 in

Chance of precipitation28%

Record high56° (2021)

Record low2° (1972)

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 Deer Park, 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 Deer Park, 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.