Weather in Buffalo Grove, IL
Buffalo Grove, Wednesday, 28 October, 19:34
Mostly clear. Feels like 66°. High 75°, low 52°.
Monthly outlook for Buffalo Grove, IL: average high 55°, average low 45°. That is 2.3° above the climate normal for October. Precipitation is expected on 9 days (about 2.2 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 28 October (75.1°), the coolest 12 November (30.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 61.1° | 52.4° | +4.8° |
| 7 November – 16 November | 44.9° | 47.2° | -1.3° |
| 17 November – 26 November | at normal | 43.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (8 mi).
0.06
Buffalo Grove, Thursday, 29 October
Light rain. High 67°, low 52°.
0.05Buffalo Grove, Friday, 30 October
Light rain. High 59°, low 45°.
0
Buffalo Grove, Saturday, 31 October
Overcast. High 62°, low 52°.
0Buffalo Grove, Sunday, 1 November
Overcast. High 65°, low 50°.
0.07Buffalo Grove, Monday, 2 November
Light rain. High 65°, low 52°.
0.48Buffalo Grove, Tuesday, 3 November
Light rain. High 59°, low 57°.
0.54Buffalo Grove, Wednesday, 4 November
Rain. High 57°, low 55°.
0.39Buffalo Grove, Thursday, 5 November
Rain. High 57°, low 48°.
0
Buffalo Grove, Friday, 6 November
Clear. High 46°, low 38°.
0Buffalo Grove, Saturday, 7 November
Clear. High 47°, low 34°.
0.28Buffalo Grove, Sunday, 8 November
Rain. High 44°, low 39°.
0.28Buffalo Grove, Monday, 9 November
Light rain. High 48°, low 43°.
0.05Buffalo Grove, Tuesday, 10 November
Light rain. High 47°, low 40°.
0
Buffalo Grove, Wednesday, 11 November
Mostly clear. High 41°, low 32°.
0Buffalo Grove, Thursday, 12 November
Overcast. High 43°, low 31°.
0.05
Buffalo Grove, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Buffalo Grove, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Buffalo Grove, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Buffalo Grove, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Buffalo Grove, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11Buffalo Grove, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Buffalo Grove, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Buffalo Grove, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Buffalo Grove, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Buffalo Grove, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Buffalo Grove, Monday, 23 November
Climate normal for this date — 60-year average.
0.08Buffalo Grove, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.09
Buffalo Grove, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.12Buffalo Grove, Thursday, 26 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 Buffalo 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 Buffalo 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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