As of 23:51 CDT

Weather in Long Lake, IL

48°Current weather

Long Lake, Monday, 19 October, 23:51

Clear. Feels like 48°. High 67°, low 40°.

Pressure30.36 inHg
Wind1.1 mph SW
Humidity92%
Visibility6.2 mi
Dew point46°

Monthly outlook for Long Lake, IL: average high 57.9°, average low 41.3°. That is 1.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 21 October (70.2°), the coolest 28 October (25.1°).

57.9°/41.3°
Average high / low
+1.5°
Above normal
2 / 5
Wet days / normal
0.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
19 October – 28 October60°56.3°+2.1°
29 October – 7 November54.3°52.3°+1.1°
8 November – 17 Novemberat normal46.7°—

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 (2 mi).

Tue, 2069° / 44°0Clear
69 °Clear

Long Lake, Tuesday, 20 October

Clear. High 69°, low 44°.

Pressure30.39 inHg
Wind3 mph SE
Humidity56%
Visibility6.2 mi
Dew point48°
Wed, 2170° / 44°0Clear
70 °Clear

Long Lake, Wednesday, 21 October

Clear. High 70°, low 44°.

Pressure30.27 inHg
Wind4 mph SW
Humidity51%
Visibility6.2 mi
Dew point46°
Thu, 2265° / 49°0Partly cloudy
65 °Partly cloudy

Long Lake, Thursday, 22 October

Partly cloudy. High 65°, low 49°.

Pressure30.33 inHg
Wind8 mph NE
Humidity70%
Visibility6.2 mi
Dew point55°
Fri, 2361° / 47°0Mostly clear
61 °Mostly clear

Long Lake, Friday, 23 October

Mostly clear. High 61°, low 47°.

Pressure30.39 inHg
Wind6 mph SE
Humidity69%
Visibility6.2 mi
Dew point48°
Sat, 2461° / 45°0Overcast
61 °Overcast

Long Lake, Saturday, 24 October

Overcast. High 61°, low 45°.

Pressure30.39 inHg
Wind8.2 mph S
Humidity58%
Visibility—
Dew point44°
Sun, 2565° / 49°0Light rain
65 °Light rain

Long Lake, Sunday, 25 October

Light rain. High 65°, low 49°.

Pressure30.36 inHg
Wind8.3 mph SW
Humidity60%
Visibility—
Dew point49°
Mon, 2657° / 43°0Light rain
57 °Light rain

Long Lake, Monday, 26 October

Light rain. High 57°, low 43°.

Pressure30.33 inHg
Wind7 mph N
Humidity32%
Visibility—
Dew point25°
Tue, 2746° / 32°0.13Light rain
46 °Light rain

Long Lake, Tuesday, 27 October

Light rain. High 46°, low 32°.

Pressure30.27 inHg
Wind17.3 mph NW
Humidity38%
Visibility—
Dew point21°
Wed, 2840° / 25°0Clear
40 °Clear

Long Lake, Wednesday, 28 October

Clear. High 40°, low 25°.

Pressure30.45 inHg
Wind11 mph W
Humidity36%
Visibility—
Dew point12°
Thu, 2948° / 28°0Clear
48 °Clear

Long Lake, Thursday, 29 October

Clear. High 48°, low 28°.

Pressure30.21 inHg
Wind11.5 mph W
Humidity28%
Visibility—
Dew point13°
Fri, 3053° / 33°0Clear
53 °Clear

Long Lake, Friday, 30 October

Clear. High 53°, low 33°.

Pressure30.09 inHg
Wind12.4 mph SW
Humidity41%
Visibility—
Dew point27°
Sat, 3159° / 40°0Overcast
59 °Overcast

Long Lake, Saturday, 31 October

Overcast. High 59°, low 40°.

Pressure30.15 inHg
Wind9.6 mph S
Humidity38%
Visibility—
Dew point31°
Sun, 0159° / 49°0.06Light rain
59 °Light rain

Long Lake, Sunday, 1 November

Light rain. High 59°, low 49°.

Pressure30.09 inHg
Wind10.8 mph SW
Humidity39%
Visibility—
Dew point32°
Mon, 0252° / 50°0Light rain
52 °Light rain

Long Lake, Monday, 2 November

Light rain. High 52°, low 50°.

Pressure29.94 inHg
Wind9.6 mph NW
Humidity94%
Visibility—
Dew point50°
Tue, 0355° / 42°0Overcast
55 °Overcast

Long Lake, Tuesday, 3 November

Overcast. High 55°, low 42°.

Pressure29.94 inHg
Wind13.2 mph NW
Humidity68%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0451° / 41°0.1Climate normal
51 °Climate normal

Long Lake, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high51°
Average low41°
Average precipitation0.1 in
Chance of precipitation32%
Record high69° (2022)
Record low15° (1991)
Thu, 0551° / 40°0.12Climate normal
51 °Climate normal

Long Lake, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high51°
Average low40°
Average precipitation0.12 in
Chance of precipitation28%
Record high71° (1978)
Record low20° (1991)
Fri, 0651° / 38°0.09Climate normal
51 °Climate normal

Long Lake, Friday, 6 November

Climate normal for this date — 60-year average.

Average high51°
Average low38°
Average precipitation0.09 in
Chance of precipitation30%
Record high70° (2020)
Record low22° (1991)
Sat, 0750° / 38°0.05Climate normal
50 °Climate normal

Long Lake, 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

Long Lake, 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

Long Lake, 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

Long Lake, 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

Long Lake, 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

Long Lake, 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

Long Lake, 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

Long Lake, 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

Long Lake, 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

Long Lake, 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

Long Lake, 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)

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 Long Lake, 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 Long Lake, 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.