Weather in Lake Bluff, IL
Lake Bluff, Friday, 16 October, 22:47
Clear. Feels like 39°. High 57°, low 45°.
Monthly outlook for Lake Bluff, IL: average high 60.3°, average low 48.1°. That is 2.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 24 October (70.6°), the coolest 17 October (38.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 62.6° | 56.9° | +3.2° |
| 26 October – 4 November | 56.4° | 53° | +1.8° |
| 5 November – 14 November | at normal | 48.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Park City (5 mi).
0
Lake Bluff, Saturday, 17 October
Clear. High 54°, low 39°.
0Lake Bluff, Sunday, 18 October
Clear. High 61°, low 44°.
0Lake Bluff, Monday, 19 October
Clear. High 64°, low 43°.
0
Lake Bluff, Tuesday, 20 October
Overcast. High 62°, low 46°.
0Lake Bluff, Wednesday, 21 October
Clear. High 67°, low 47°.
0.01
Lake Bluff, Thursday, 22 October
Light rain. High 66°, low 50°.
0Lake Bluff, Friday, 23 October
Overcast. High 67°, low 59°.
0Lake Bluff, Saturday, 24 October
Overcast. High 71°, low 60°.
0Lake Bluff, Sunday, 25 October
Overcast. High 58°, low 48°.
0.01Lake Bluff, Monday, 26 October
Light rain. High 54°, low 50°.
0Lake Bluff, Tuesday, 27 October
Overcast. High 64°, low 54°.
0Lake Bluff, Wednesday, 28 October
Clear. High 53°, low 43°.
0.21Lake Bluff, Thursday, 29 October
Rain. High 53°, low 47°.
0.35Lake Bluff, Friday, 30 October
Rain. High 60°, low 51°.
0
Lake Bluff, Saturday, 31 October
Mostly clear. High 54°, low 47°.
0.17
Lake Bluff, Sunday, 1 November
Climate normal for this date — 60-year average.
0.13Lake Bluff, Monday, 2 November
Climate normal for this date — 60-year average.
0.06
Lake Bluff, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.1Lake Bluff, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Lake Bluff, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Lake Bluff, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Lake Bluff, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Lake Bluff, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12Lake Bluff, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Lake Bluff, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Lake Bluff, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Lake Bluff, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Lake Bluff, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Lake Bluff, Saturday, 14 November
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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