Weather in Lake Barrington, IL
Lake Barrington, Sunday, 25 October, 05:33
Overcast. Feels like 53°. High 72°, low 52°.
Monthly outlook for Lake Barrington, IL: average high 61.4°, average low 48.5°. That is 4.9° above the climate normal for October. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 25 October (71.6°), the coolest 8 November (32.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 66.3° | 53.9° | +6.9° |
| 4 November – 13 November | 53.1° | 48.7° | +2.4° |
| 14 November – 23 November | at normal | 44.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (12 mi).
0Lake Barrington, Monday, 26 October
Overcast. High 66°, low 48°.
0
Lake Barrington, Tuesday, 27 October
Mostly clear. High 67°, low 49°.
0
Lake Barrington, Wednesday, 28 October
Clear. High 70°, low 54°.
0Lake Barrington, Thursday, 29 October
Overcast. High 68°, low 58°.
0.09
Lake Barrington, Friday, 30 October
Light rain. High 67°, low 51°.
0.12Lake Barrington, Saturday, 31 October
Light rain. High 67°, low 58°.
0.13Lake Barrington, Sunday, 1 November
Light rain. High 60°, low 59°.
0.85Lake Barrington, Monday, 2 November
Rain. High 65°, low 59°.
0.35Lake Barrington, Tuesday, 3 November
Rain. High 62°, low 46°.
0.02Lake Barrington, Wednesday, 4 November
Light rain. High 49°, low 44°.
0
Lake Barrington, Thursday, 5 November
Partly cloudy. High 54°, low 41°.
0Lake Barrington, Friday, 6 November
Overcast. High 57°, low 42°.
0Lake Barrington, Saturday, 7 November
Partly cloudy. High 53°, low 39°.
0Lake Barrington, Sunday, 8 November
Overcast. High 50°, low 33°.
0.34Lake Barrington, Monday, 9 November
Rain. High 57°, low 44°.
0.11
Lake 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.
0.07Lake 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.
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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