Weather in Lake Barrington, IL
Lake Barrington, Wednesday, 21 October, 01:36
Clear. Feels like 48°. High 72°, low 42°.
Monthly outlook for Lake Barrington, IL: average high 58.4°, average low 42.6°. That is 2.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 October (73.9°), the coolest 30 October (35°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 61.4° | 55.7° | +3.1° |
| 31 October – 9 November | 53.4° | 51.4° | +1.1° |
| 10 November – 19 November | at normal | 46° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (12 mi).
0
Lake Barrington, Thursday, 22 October
Clear. High 74°, low 44°.
0Lake Barrington, Friday, 23 October
Clear. High 67°, low 54°.
0
Lake Barrington, Saturday, 24 October
Overcast. High 66°, low 50°.
0Lake Barrington, Sunday, 25 October
Overcast. High 70°, low 52°.
0.11
Lake Barrington, Monday, 26 October
Light rain. High 68°, low 43°.
0.07Lake Barrington, Tuesday, 27 October
Light rain. High 47°, low 38°.
0Lake Barrington, Wednesday, 28 October
Overcast. High 48°, low 38°.
0Lake Barrington, Thursday, 29 October
Clear. High 51°, low 35°.
0Lake Barrington, Friday, 30 October
Clear. High 53°, low 35°.
0Lake Barrington, Saturday, 31 October
Clear. High 58°, low 41°.
0.06Lake Barrington, Sunday, 1 November
Light rain. High 53°, low 47°.
0Lake Barrington, Monday, 2 November
Clear. High 56°, low 43°.
0Lake Barrington, Tuesday, 3 November
Overcast. High 48°, low 35°.
0.01Lake Barrington, Wednesday, 4 November
Light rain. High 52°, low 43°.
0
Lake Barrington, Thursday, 5 November
Mostly clear. High 53°, low 41°.
0.09
Lake 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.
0.07Lake Barrington, Thursday, 19 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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