Monthly outlook for Lake Bluff, IL: average high 60.2°, average low 48.6°. That is 2.4° above the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 29 October (66.5°), the coolest 17 October (36.1°).
60.2°/48.6°
Average high / low
+2.4°
Above normal
2 / 5
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
60.2°
56.9°
+1.8°
26 October – 4 November
60.1°
53°
+3.9°
5 November – 14 November
at normal
48.1°
—
October records over 66 years
84.7°1 October 2019All-time high
28.6°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Park City (5 mi).
Sat, 1755° / 36°0
55 °
Lake Bluff, Saturday, 17 October
Clear. High 55°, low 36°.
Pressure30.53 inHg
Wind4.4 mph SW
Humidity45%
Visibility6.2 mi
Dew point31°
Sun, 1861° / 43°0
61 °
Lake Bluff, Sunday, 18 October
Clear. High 61°, low 43°.
Pressure30.45 inHg
Wind11.9 mph SW
Humidity55%
Visibility6.2 mi
Dew point41°
Mon, 1962° / 42°0
62 °
Lake Bluff, Monday, 19 October
Clear. High 62°, low 42°.
Pressure30.39 inHg
Wind3.7 mph S
Humidity53%
Visibility6.2 mi
Dew point43°
Tue, 2064° / 48°0
64 °
Lake Bluff, Tuesday, 20 October
Partly cloudy. High 64°, low 48°.
Pressure30.39 inHg
Wind5.1 mph E
Humidity44%
Visibility—
Dew point39°
Wed, 2165° / 47°0
65 °
Lake Bluff, Wednesday, 21 October
Mostly clear. High 65°, low 47°.
Pressure30.30 inHg
Wind4.4 mph SE
Humidity46%
Visibility—
Dew point42°
Thu, 2263° / 52°0
63 °
Lake Bluff, Thursday, 22 October
Overcast. High 63°, low 52°.
Pressure30.12 inHg
Wind9.5 mph W
Humidity55%
Visibility—
Dew point41°
Fri, 2356° / 52°0
56 °
Lake Bluff, Friday, 23 October
Overcast. High 56°, low 52°.
Pressure30.33 inHg
Wind13.1 mph NE
Humidity66%
Visibility—
Dew point43°
Sat, 2457° / 50°0
57 °
Lake Bluff, Saturday, 24 October
Overcast. High 57°, low 50°.
Pressure30.30 inHg
Wind9.2 mph SE
Humidity56%
Visibility—
Dew point40°
Sun, 2562° / 53°0
62 °
Lake Bluff, Sunday, 25 October
Overcast. High 62°, low 53°.
Pressure30.21 inHg
Wind7 mph SE
Humidity43%
Visibility—
Dew point38°
Mon, 2665° / 54°0
65 °
Lake Bluff, Monday, 26 October
Overcast. High 65°, low 54°.
Pressure30.12 inHg
Wind7.4 mph SE
Humidity38%
Visibility—
Dew point36°
Tue, 2757° / 49°0
57 °
Lake Bluff, Tuesday, 27 October
Overcast. High 57°, low 49°.
Pressure30.18 inHg
Wind9.5 mph W
Humidity52%
Visibility—
Dew point37°
Wed, 2855° / 48°0.28
55 °
Lake Bluff, Wednesday, 28 October
Rain. High 55°, low 48°.
Pressure30.18 inHg
Wind9.6 mph SE
Humidity89%
Visibility—
Dew point48°
Thu, 2966° / 56°0.1
66 °
Lake Bluff, Thursday, 29 October
Light rain. High 66°, low 56°.
Pressure29.97 inHg
Wind11.9 mph SW
Humidity74%
Visibility—
Dew point56°
Fri, 3063° / 54°0
63 °
Lake Bluff, Friday, 30 October
Partly cloudy. High 63°, low 54°.
Pressure30.06 inHg
Wind8.4 mph N
Humidity55%
Visibility—
Dew point45°
Sat, 3154° / 51°0
54 °
Lake Bluff, Saturday, 31 October
Overcast. High 54°, low 51°.
Pressure30.21 inHg
Wind18 mph E
Humidity75%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0153° / 44°0.17
53 °
Lake Bluff, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.17 in
Chance of precipitation42%
Record high69° (2016)
Record low22° (2019)
Mon, 0252° / 42°0.13
52 °
Lake Bluff, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.13 in
Chance of precipitation38%
Record high69° (1961)
Record low24° (1991)
Tue, 0351° / 42°0.06
51 °
Lake Bluff, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.06 in
Chance of precipitation22%
Record high69° (2022)
Record low19° (1991)
Wed, 0451° / 43°0.1
51 °
Lake Bluff, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low43°
Average precipitation0.1 in
Chance of precipitation32%
Record high69° (2022)
Record low17° (1991)
Thu, 0551° / 42°0.11
51 °
Lake Bluff, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.11 in
Chance of precipitation28%
Record high69° (1978)
Record low22° (1991)
Fri, 0651° / 40°0.08
51 °
Lake Bluff, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.08 in
Chance of precipitation28%
Record high70° (2020)
Record low23° (1991)
Sat, 0750° / 40°0.05
50 °
Lake Bluff, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.05 in
Chance of precipitation17%
Record high68° (2020)
Record low19° (1991)
Sun, 0849° / 40°0.06
49 °
Lake Bluff, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.06 in
Chance of precipitation17%
Record high70° (2020)
Record low18° (2019)
Mon, 0950° / 40°0.12
50 °
Lake Bluff, 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° (1991)
Tue, 1048° / 39°0.11
48 °
Lake Bluff, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.11 in
Chance of precipitation38%
Record high72° (2022)
Record low18° (2017)
Wed, 1146° / 37°0.08
46 °
Lake Bluff, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.08 in
Chance of precipitation33%
Record high65° (1964)
Record low16° (2019)
Thu, 1245° / 36°0.06
45 °
Lake Bluff, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.06 in
Chance of precipitation20%
Record high63° (1964)
Record low7° (2019)
Fri, 1345° / 36°0.05
45 °
Lake Bluff, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.05 in
Chance of precipitation23%
Record high65° (1999)
Record low10° (2019)
Sat, 1446° / 36°0.07
46 °
Lake Bluff, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.07 in
Chance of precipitation27%
Record high64° (1971)
Record low17° (1986)
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 Bluff, 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 Bluff, 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.