As of 08:42 CDT

Weather in Lake Barrington, IL

55°Current weather

Lake Barrington, Thursday, 22 October, 08:42

Clear. Feels like 54°. High 72°, low 46°.

Pressure30.27 inHg
Wind2.3 mph NW
Humidity83%
Visibility6.2 mi
Dew point50°

Monthly outlook for Lake Barrington, IL: average high 59.9°, average low 45°. That is 3.3° above the climate normal for October. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 October (72.1°), the coolest 30 October (35.1°).

59.9°/45°
Average high / low
+3.3°
Above normal
3 / 5
Wet days / normal
1.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
22 October – 31 October63.3°55.3°+4.4°
1 November – 10 November54.3°50.8°+1.9°
11 November – 20 Novemberat normal45.5°—

October records over 66 years

86.9°3 October 2025All-time high
26.1°30 October 1988All-time low

Climate normals and records are computed from the nearest reference point — Round Lake Beach (12 mi).

Fri, 2371° / 46°0Overcast
71 °Overcast

Lake Barrington, Friday, 23 October

Overcast. High 71°, low 46°.

Pressure30.33 inHg
Wind6.1 mph S
Humidity56%
Visibility6.2 mi
Dew point50°
Sat, 2465° / 48°0Overcast
65 °Overcast

Lake Barrington, Saturday, 24 October

Overcast. High 65°, low 48°.

Pressure30.39 inHg
Wind6.6 mph S
Humidity64%
Visibility6.2 mi
Dew point50°
Sun, 2570° / 52°0Mostly clear
70 °Mostly clear

Lake Barrington, Sunday, 25 October

Mostly clear. High 70°, low 52°.

Pressure30.39 inHg
Wind5.5 mph SW
Humidity59%
Visibility6.2 mi
Dew point52°
Mon, 2665° / 50°0Overcast
65 °Overcast

Lake Barrington, Monday, 26 October

Overcast. High 65°, low 50°.

Pressure30.36 inHg
Wind8.1 mph NE
Humidity73%
Visibility—
Dew point54°
Tue, 2764° / 51°0Overcast
64 °Overcast

Lake Barrington, Tuesday, 27 October

Overcast. High 64°, low 51°.

Pressure30.30 inHg
Wind8.7 mph E
Humidity72%
Visibility—
Dew point52°
Wed, 2865° / 51°0Overcast
65 °Overcast

Lake Barrington, Wednesday, 28 October

Overcast. High 65°, low 51°.

Pressure30.12 inHg
Wind9.7 mph S
Humidity60%
Visibility—
Dew point48°
Thu, 2955° / 41°0.01Light rain
55 °Light rain

Lake Barrington, Thursday, 29 October

Light rain. High 55°, low 41°.

Pressure30.15 inHg
Wind16.4 mph NW
Humidity49%
Visibility—
Dew point32°
Fri, 3053° / 35°0Clear
53 °Clear

Lake Barrington, Friday, 30 October

Clear. High 53°, low 35°.

Pressure30.30 inHg
Wind6 mph NW
Humidity39%
Visibility—
Dew point25°
Sat, 3154° / 43°0.41Light rain
54 °Light rain

Lake Barrington, Saturday, 31 October

Light rain. High 54°, low 43°.

Pressure30.06 inHg
Wind14.3 mph S
Humidity95%
Visibility—
Dew point44°
Sun, 0158° / 54°0.23Light rain
58 °Light rain

Lake Barrington, Sunday, 1 November

Light rain. High 58°, low 54°.

Pressure29.97 inHg
Wind12.9 mph S
Humidity95%
Visibility—
Dew point54°
Mon, 0260° / 46°0Partly cloudy
60 °Partly cloudy

Lake Barrington, Monday, 2 November

Partly cloudy. High 60°, low 46°.

Pressure30.18 inHg
Wind7.7 mph N
Humidity46%
Visibility—
Dew point38°
Tue, 0361° / 42°0Clear
61 °Clear

Lake Barrington, Tuesday, 3 November

Clear. High 61°, low 42°.

Pressure30.12 inHg
Wind13.3 mph W
Humidity47%
Visibility—
Dew point37°
Wed, 0449° / 39°0Overcast
49 °Overcast

Lake Barrington, Wednesday, 4 November

Overcast. High 49°, low 39°.

Pressure30.24 inHg
Wind9.9 mph N
Humidity50%
Visibility—
Dew point30°
Thu, 0553° / 37°0Clear
53 °Clear

Lake Barrington, Thursday, 5 November

Clear. High 53°, low 37°.

Pressure30.21 inHg
Wind7.4 mph SE
Humidity51%
Visibility—
Dew point33°
Fri, 0644° / 41°0.52Rain
44 °Rain

Lake Barrington, Friday, 6 November

Rain. High 44°, low 41°.

Pressure30.06 inHg
Wind12.8 mph S
Humidity89%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 0750° / 38°0.05Climate normal
50 °Climate normal

Lake Barrington, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°
Average low38°
Average precipitation0.05 in
Chance of precipitation18%
Record high68° (2020)
Record low14° (1991)
Sun, 0850° / 38°0.04Climate normal
50 °Climate normal

Lake Barrington, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low38°
Average precipitation0.04 in
Chance of precipitation18%
Record high73° (2020)
Record low15° (1991)
Mon, 0950° / 38°0.11Climate normal
50 °Climate normal

Lake Barrington, Monday, 9 November

Climate normal for this date — 60-year average.

Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation33%
Record high73° (2020)
Record low20° (1991)
Tue, 1049° / 37°0.11Climate normal
49 °Climate normal

Lake Barrington, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high49°
Average low37°
Average precipitation0.11 in
Chance of precipitation38%
Record high72° (2022)
Record low16° (2017)
Wed, 1146° / 35°0.08Climate normal
46 °Climate normal

Lake Barrington, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.08 in
Chance of precipitation35%
Record high67° (1964)
Record low15° (2019)
Thu, 1245° / 34°0.06Climate normal
45 °Climate normal

Lake Barrington, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high45°
Average low34°
Average precipitation0.06 in
Chance of precipitation22%
Record high64° (1964)
Record low3° (2019)
Fri, 1345° / 33°0.05Climate normal
45 °Climate normal

Lake Barrington, Friday, 13 November

Climate normal for this date — 60-year average.

Average high45°
Average low33°
Average precipitation0.05 in
Chance of precipitation25%
Record high67° (1999)
Record low2° (2019)
Sat, 1446° / 34°0.07Climate normal
46 °Climate normal

Lake Barrington, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high46°
Average low34°
Average precipitation0.07 in
Chance of precipitation28%
Record high66° (1971)
Record low15° (1986)
Sun, 1546° / 35°0.08Climate normal
46 °Climate normal

Lake Barrington, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.08 in
Chance of precipitation28%
Record high68° (2025)
Record low17° (2019)
Mon, 1646° / 34°0.05Climate normal
46 °Climate normal

Lake Barrington, Monday, 16 November

Climate normal for this date — 60-year average.

Average high46°
Average low34°
Average precipitation0.05 in
Chance of precipitation17%
Record high62° (1988)
Record low21° (1997)
Tue, 1746° / 35°0.1Climate normal
46 °Climate normal

Lake Barrington, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.1 in
Chance of precipitation28%
Record high68° (2016)
Record low15° (2014)
Wed, 1846° / 35°0.1Climate normal
46 °Climate normal

Lake Barrington, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.1 in
Chance of precipitation28%
Record high64° (1975)
Record low12° (2014)
Thu, 1946° / 35°0.07Climate normal
46 °Climate normal

Lake Barrington, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high46°
Average low35°
Average precipitation0.07 in
Chance of precipitation32%
Record high63° (1983)
Record low15° (2018)
Fri, 2044° / 33°0.07Climate normal
44 °Climate normal

Lake Barrington, Friday, 20 November

Climate normal for this date — 60-year average.

Average high44°
Average low33°
Average precipitation0.07 in
Chance of precipitation35%
Record high61° (2003)
Record low13° (2022)

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 Lake Barrington, 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 Lake Barrington, 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.