As of 16:37 CDT

Weather in Deerfield, IL

79°

Deerfield, Tuesday, 13 October, 16:37

Clear. Feels like 79°. High 79°, low 68°.

Pressure29.85 inHg

Wind6.9 mph W

Humidity54%

Visibility6.2 mi

Dew point61°

See detailed hourly forecast

Monthly outlook for Deerfield, IL: average high 62°, average low 52.3°. That is 2.8° above the climate normal for October. Precipitation is expected on 3 days (about 1.5 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 13 October (78.7°), the coolest 17 October (38.1°).

62°/52.3°

Average high / low

+2.8°

Above normal

3 / 5

Wet days / normal

1.5 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
13 October – 22 October	64.7°	58.1°	+3.7°
23 October – 1 November	57.4°	54.4°	+1.7°
2 November – 11 November	at normal	50°	—

October records over 66 years

87.4°3 October 2025All-time high

27.5°31 October 2019All-time low

Climate normals and records are computed from the nearest reference point — Highwood (3 mi).

Wed, 1473° / 61°

0.03

73 °

Deerfield, Wednesday, 14 October

Light rain. High 73°, low 61°.

Pressure30.09 inHg

Wind8.2 mph NE

Humidity71%

Visibility5.2 mi

Dew point58°

Thu, 1563° / 56°

1.11

63 °

Deerfield, Thursday, 15 October

Heavy rain. High 63°, low 56°.

Pressure30.03 inHg

Wind8.4 mph E

Humidity96%

Visibility1.3 mi

Dew point58°

Fri, 1658° / 45°

0.07

58 °

Deerfield, Friday, 16 October

Light rain. High 58°, low 45°.

Pressure30.00 inHg

Wind16.5 mph NW

Humidity65%

Visibility6.2 mi

Dew point40°

Sat, 1755° / 38°

55 °

Deerfield, Saturday, 17 October

Clear. High 55°, low 38°.

Pressure30.50 inHg

Wind4.6 mph W

Humidity51%

Visibility6.2 mi

Dew point34°

Sun, 1860° / 45°

60 °

Deerfield, Sunday, 18 October

Clear. High 60°, low 45°.

Pressure30.30 inHg

Wind13.5 mph SW

Humidity56%

Visibility—

Dew point42°

Mon, 1962° / 51°

62 °

Deerfield, Monday, 19 October

Overcast. High 62°, low 51°.

Pressure30.30 inHg

Wind10.4 mph SW

Humidity54%

Visibility—

Dew point43°

Tue, 2065° / 55°

65 °

Deerfield, Tuesday, 20 October

Overcast. High 65°, low 55°.

Pressure30.30 inHg

Wind7.3 mph SE

Humidity57%

Visibility—

Dew point48°

Wed, 2165° / 58°

65 °

Deerfield, Wednesday, 21 October

Overcast. High 65°, low 58°.

Pressure30.15 inHg

Wind5.9 mph SE

Humidity76%

Visibility—

Dew point54°

Thu, 2268° / 60°

68 °

Deerfield, Thursday, 22 October

Overcast. High 68°, low 60°.

Pressure29.97 inHg

Wind8.7 mph SE

Humidity80%

Visibility—

Dew point57°

Fri, 2371° / 60°

0.24

71 °

Deerfield, Friday, 23 October

Rain. High 71°, low 60°.

Pressure29.74 inHg

Wind17.6 mph S

Humidity66%

Visibility—

Dew point58°

Sat, 2464° / 52°

64 °

Deerfield, Saturday, 24 October

Clear. High 64°, low 52°.

Pressure30.24 inHg

Wind10.3 mph W

Humidity38%

Visibility—

Dew point35°

Sun, 2556° / 53°

56 °

Deerfield, Sunday, 25 October

Overcast. High 56°, low 53°.

Pressure30.30 inHg

Wind10.1 mph E

Humidity60%

Visibility—

Dew point41°

Mon, 2656° / 50°

0.04

56 °

Deerfield, Monday, 26 October

Light rain. High 56°, low 50°.

Pressure29.97 inHg

Wind9.1 mph NW

Humidity81%

Visibility—

Dew point49°

Tue, 2749° / 45°

49 °

Deerfield, Tuesday, 27 October

Overcast. High 49°, low 45°.

Pressure30.12 inHg

Wind9.4 mph N

Humidity59%

Visibility—

Dew point34°

Wed, 2849° / 40°

49 °

Deerfield, Wednesday, 28 October

Overcast. High 49°, low 40°.

Pressure30.09 inHg

Wind9.6 mph N

Humidity57%

Visibility—

Dew point33°

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

Thu, 2953° / 45°

0.06

53 °

Deerfield, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high53°

Average low45°

Average precipitation0.06 in

Chance of precipitation22%

Record high78° (2024)

Record low31° (1988)

Fri, 3055° / 46°

0.1

55 °

Deerfield, Friday, 30 October

Climate normal for this date — 60-year average.

Average high55°

Average low46°

Average precipitation0.1 in

Chance of precipitation30%

Record high76° (2024)

Record low30° (2020)

Sat, 3154° / 45°

0.13

54 °

Deerfield, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high54°

Average low45°

Average precipitation0.13 in

Chance of precipitation42%

Record high71° (2024)

Record low28° (2019)

Sun, 0153° / 44°

0.17

53 °

Deerfield, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high53°

Average low44°

Average precipitation0.17 in

Chance of precipitation42%

Record high67° (2016)

Record low20° (2019)

Mon, 0252° / 43°

0.13

52 °

Deerfield, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°

Average low43°

Average precipitation0.13 in

Chance of precipitation38%

Record high68° (1961)

Record low25° (1991)

Tue, 0351° / 42°

0.06

51 °

Deerfield, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°

Average low42°

Average precipitation0.06 in

Chance of precipitation23%

Record high70° (2022)

Record low20° (1991)

Wed, 0451° / 43°

0.09

51 °

Deerfield, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high51°

Average low43°

Average precipitation0.09 in

Chance of precipitation28%

Record high69° (2022)

Record low18° (1991)

Thu, 0551° / 42°

0.12

51 °

Deerfield, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high51°

Average low42°

Average precipitation0.12 in

Chance of precipitation28%

Record high68° (2022)

Record low22° (1991)

Fri, 0651° / 40°

0.09

51 °

Deerfield, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°

Average low40°

Average precipitation0.09 in

Chance of precipitation28%

Record high70° (2020)

Record low25° (1991)

Sat, 0750° / 41°

0.05

50 °

Deerfield, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°

Average low41°

Average precipitation0.05 in

Chance of precipitation18%

Record high68° (2020)

Record low21° (1991)

Sun, 0849° / 41°

0.06

49 °

Deerfield, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high49°

Average low41°

Average precipitation0.06 in

Chance of precipitation17%

Record high72° (2020)

Record low18° (2019)

Mon, 0950° / 40°

0.12

50 °

Deerfield, Monday, 9 November

Climate normal for this date — 60-year average.

Average high50°

Average low40°

Average precipitation0.12 in

Chance of precipitation38%

Record high72° (2020)

Record low23° (2018)

Tue, 1049° / 40°

0.11

49 °

Deerfield, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high49°

Average low40°

Average precipitation0.11 in

Chance of precipitation37%

Record high72° (2022)

Record low18° (2017)

Wed, 1147° / 38°

0.08

47 °

Deerfield, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high47°

Average low38°

Average precipitation0.08 in

Chance of precipitation33%

Record high64° (1964)

Record low16° (2019)

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 Deerfield, 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 Deerfield, 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.