Weather in Long Grove, IL
Long Grove, Tuesday, 27 October, 01:25
Clear. Feels like 51°. High 68°, low 51°.
Monthly outlook for Long Grove, IL: average high 54.5°, average low 44°. That is 1.7° above the climate normal for October. Precipitation is expected on 7 days (about 3.4 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 28 October (72.1°), the coolest 7 November (28.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 62.2° | 52.8° | +5.2° |
| 6 November – 15 November | 41.8° | 47.7° | -3.3° |
| 16 November – 25 November | at normal | 44.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (10 mi).
0
Long Grove, Wednesday, 28 October
Clear. High 72°, low 51°.
0.02
Long Grove, Thursday, 29 October
Light rain. High 66°, low 50°.
0
Long Grove, Friday, 30 October
Overcast. High 63°, low 45°.
0.95Long Grove, Saturday, 31 October
Rain. High 63°, low 54°.
0.11Long Grove, Sunday, 1 November
Light rain. High 64°, low 53°.
0Long Grove, Monday, 2 November
Overcast. High 58°, low 54°.
0.49Long Grove, Tuesday, 3 November
Rain. High 59°, low 56°.
0.91Long Grove, Wednesday, 4 November
Heavy rain. High 59°, low 52°.
0.12
Long Grove, Thursday, 5 November
Snow. High 50°, low 35°.
0.12Long Grove, Friday, 6 November
Snow. High 37°, low 30°.
0
Long Grove, Saturday, 7 November
Partly cloudy. High 38°, low 28°.
0.03Long Grove, Sunday, 8 November
Light rain. High 43°, low 29°.
0.65Long Grove, Monday, 9 November
Rain. High 47°, low 42°.
0Long Grove, Tuesday, 10 November
Overcast. High 45°, low 39°.
0Long Grove, Wednesday, 11 November
Partly cloudy. High 41°, low 35°.
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.
0.05
Long 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.
0.04Long Grove, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Long Grove, Monday, 23 November
Climate normal for this date — 60-year average.
0.08Long Grove, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.09
Long Grove, Wednesday, 25 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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