Weather in Lake Barrington, IL
Lake Barrington, Friday, 30 October, 08:54
Overcast. Feels like 44°. High 57°, low 43°.
Monthly outlook for Lake Barrington, IL: average high 54.5°, average low 46°. That is 2.5° above the climate normal for October. Precipitation is expected on 7 days (about 2.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 3 November (67.8°), the coolest 11 November (34.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 30 October – 8 November | 58.2° | 51.9° | +3.5° |
| 9 November – 18 November | 48.5° | 46.4° | +1.2° |
| 19 November – 28 November | at normal | 42.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (12 mi).
0.7
Lake Barrington, Saturday, 31 October
Heavy rain. High 65°, low 51°.
0Lake Barrington, Sunday, 1 November
Overcast. High 62°, low 54°.
0Lake Barrington, Monday, 2 November
Light rain. High 62°, low 54°.
0.05Lake Barrington, Tuesday, 3 November
Light rain. High 68°, low 62°.
0.57Lake Barrington, Wednesday, 4 November
Rain. High 64°, low 58°.
0.12Lake Barrington, Thursday, 5 November
Light rain. High 56°, low 51°.
0Lake Barrington, Friday, 6 November
Overcast. High 50°, low 46°.
0
Lake Barrington, Saturday, 7 November
Mostly clear. High 49°, low 37°.
0Lake Barrington, Sunday, 8 November
Overcast. High 47°, low 39°.
0.01Lake Barrington, Monday, 9 November
Light rain. High 49°, low 42°.
0.07Lake Barrington, Tuesday, 10 November
Light rain. High 47°, low 42°.
0
Lake Barrington, Wednesday, 11 November
Clear. High 49°, low 34°.
0Lake Barrington, Thursday, 12 November
Clear. High 50°, low 35°.
0.15Lake Barrington, Friday, 13 November
Light rain. High 46°, low 42°.
0.56Lake Barrington, Saturday, 14 November
Rain. High 51°, low 44°.
0.08
Lake 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.
0.07
Lake Barrington, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Lake Barrington, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Lake Barrington, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07Lake Barrington, Monday, 23 November
Climate normal for this date — 60-year average.
0.08Lake Barrington, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.09Lake Barrington, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.12Lake Barrington, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Lake Barrington, Friday, 27 November
Climate normal for this date — 60-year average.
0.12Lake Barrington, Saturday, 28 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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