Weather in Lake Barrington, IL
Lake Barrington, Tuesday, 20 October, 09:49
Clear. Feels like 55°. High 68°, low 42°.
Monthly outlook for Lake Barrington, IL: average high 57.1°, average low 40.8°. That is 1.2° above the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 21 October (71.4°), the coolest 28 October (28.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 60.7° | 56° | +2.6° |
| 30 October – 8 November | 51° | 51.9° | -0.5° |
| 9 November – 18 November | at normal | 46.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (12 mi).
0Lake Barrington, Wednesday, 21 October
Clear. High 71°, low 43°.
0
Lake Barrington, Thursday, 22 October
Mostly clear. High 67°, low 47°.
0Lake Barrington, Friday, 23 October
Clear. High 64°, low 48°.
0Lake Barrington, Saturday, 24 October
Mostly clear. High 66°, low 47°.
0
Lake Barrington, Sunday, 25 October
Overcast. High 67°, low 53°.
0.3
Lake Barrington, Monday, 26 October
Rain. High 66°, low 38°.
0.03
Lake Barrington, Tuesday, 27 October
Light snow. High 45°, low 34°.
0Lake Barrington, Wednesday, 28 October
Clear. High 45°, low 28°.
0Lake Barrington, Thursday, 29 October
Clear. High 47°, low 36°.
0Lake Barrington, Friday, 30 October
Clear. High 42°, low 31°.
0
Lake Barrington, Saturday, 31 October
Partly cloudy. High 47°, low 30°.
0Lake Barrington, Sunday, 1 November
Overcast. High 49°, low 41°.
0Lake Barrington, Monday, 2 November
Clear. High 57°, low 38°.
0Lake Barrington, Tuesday, 3 November
Overcast. High 59°, low 45°.
0.43Lake Barrington, Wednesday, 4 November
Rain. High 53°, low 50°.
0.12Lake Barrington, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Lake Barrington, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Lake Barrington, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Lake Barrington, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Lake Barrington, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Lake Barrington, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Lake Barrington, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Lake Barrington, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Lake Barrington, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Lake Barrington, Saturday, 14 November
Climate normal for this date — 60-year average.
0.08Lake Barrington, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Lake Barrington, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Lake Barrington, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Lake Barrington, Wednesday, 18 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 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.
Sun and moon today
Weather history
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