Weather in Long Grove, IL
Long Grove, Thursday, 22 October, 10:02
Mostly clear. Feels like 63°. High 71°, low 45°.
Monthly outlook for Long Grove, IL: average high 60.1°, average low 46°. That is 3.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 22 October (71.5°), the coolest 30 October (37.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 22 October – 31 October | 63.3° | 54.8° | +4.7° |
| 1 November – 10 November | 54.8° | 50.6° | +2.3° |
| 11 November – 20 November | at normal | 45.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (10 mi).
0
Long Grove, Friday, 23 October
Overcast. High 71°, low 46°.
0Long Grove, Saturday, 24 October
Overcast. High 65°, low 47°.
0Long Grove, Sunday, 25 October
Mostly clear. High 69°, low 52°.
0Long Grove, Monday, 26 October
Overcast. High 65°, low 50°.
0Long Grove, Tuesday, 27 October
Overcast. High 63°, low 51°.
0Long Grove, Wednesday, 28 October
Overcast. High 66°, low 52°.
0.01
Long Grove, Thursday, 29 October
Light rain. High 56°, low 43°.
0
Long Grove, Friday, 30 October
Clear. High 53°, low 37°.
0.39Long Grove, Saturday, 31 October
Light rain. High 54°, low 45°.
0.23Long Grove, Sunday, 1 November
Light rain. High 58°, low 54°.
0
Long Grove, Monday, 2 November
Partly cloudy. High 60°, low 48°.
0Long Grove, Tuesday, 3 November
Clear. High 62°, low 44°.
0Long Grove, Wednesday, 4 November
Overcast. High 50°, low 40°.
0Long Grove, Thursday, 5 November
Clear. High 53°, low 39°.
0.52Long Grove, Friday, 6 November
Rain. High 46°, low 42°.
0.05Long Grove, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Long Grove, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12
Long Grove, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Long Grove, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Long Grove, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Long Grove, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Long Grove, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Long Grove, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Long Grove, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Long Grove, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Long Grove, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11Long Grove, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Long Grove, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Long Grove, Friday, 20 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 Long Grove, 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 Long Grove, 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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