Weather in Long Grove, IL
Long Grove, Friday, 23 October, 12:10
Clear. Feels like 68°. High 69°, low 46°.
Monthly outlook for Long Grove, IL: average high 62.8°, average low 50.9°. That is 5.4° above the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (69.5°), the coolest 30 October (42.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 62.2° | 54.4° | +4.3° |
| 2 November – 11 November | 63.8° | 50° | +7.7° |
| 12 November – 21 November | at normal | 45.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (10 mi).
0
Long Grove, Saturday, 24 October
Overcast. High 68°, low 47°.
0Long Grove, Sunday, 25 October
Overcast. High 69°, low 48°.
0Long Grove, Monday, 26 October
Overcast. High 60°, low 52°.
0Long Grove, Tuesday, 27 October
Overcast. High 57°, low 51°.
0
Long Grove, Wednesday, 28 October
Mostly clear. High 68°, low 52°.
0.14
Long Grove, Thursday, 29 October
Light rain. High 62°, low 47°.
0Long Grove, Friday, 30 October
Light rain. High 51°, low 42°.
0.17Long Grove, Saturday, 31 October
Light rain. High 56°, low 47°.
0Long Grove, Sunday, 1 November
Overcast. High 62°, low 52°.
0.02Long Grove, Monday, 2 November
Light rain. High 63°, low 52°.
0.43Long Grove, Tuesday, 3 November
Light rain. High 58°, low 56°.
0.04Long Grove, Wednesday, 4 November
Light rain. High 63°, low 58°.
0.25Long Grove, Thursday, 5 November
Rain. High 67°, low 55°.
0.05Long Grove, Friday, 6 November
Light rain. High 64°, low 54°.
0Long Grove, Saturday, 7 November
Clear. High 68°, low 53°.
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.
0.06
Long 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.
0.11Long Grove, Saturday, 21 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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