Weather in Buffalo Grove, IL
Buffalo Grove, Tuesday, 27 October, 03:20
Partly cloudy. Feels like 52°. High 67°, low 52°.
Monthly outlook for Buffalo Grove, IL: average high 54°, average low 44.3°. That is 1.5° above the climate normal for October. Precipitation is expected on 8 days (about 3.4 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 28 October (71.4°), the coolest 7 November (29.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 60.8° | 52.8° | +4.5° |
| 6 November – 15 November | 42.7° | 47.7° | -2.8° |
| 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 (8 mi).
0
Buffalo Grove, Wednesday, 28 October
Clear. High 71°, low 56°.
0.05
Buffalo Grove, Thursday, 29 October
Light rain. High 67°, low 51°.
0
Buffalo Grove, Friday, 30 October
Overcast. High 60°, low 44°.
1.11Buffalo Grove, Saturday, 31 October
Rain. High 56°, low 52°.
0.31Buffalo Grove, Sunday, 1 November
Rain. High 63°, low 50°.
0.07Buffalo Grove, Monday, 2 November
Light rain. High 55°, low 53°.
0Buffalo Grove, Tuesday, 3 November
Overcast. High 57°, low 52°.
0.92Buffalo Grove, Wednesday, 4 November
Heavy rain. High 59°, low 53°.
0.13
Buffalo Grove, Thursday, 5 November
Snow. High 52°, low 36°.
0.12Buffalo Grove, Friday, 6 November
Snow. High 38°, low 31°.
0
Buffalo Grove, Saturday, 7 November
Partly cloudy. High 39°, low 30°.
0.03Buffalo Grove, Sunday, 8 November
Light rain. High 44°, low 31°.
0.66Buffalo Grove, Monday, 9 November
Rain. High 47°, low 43°.
0Buffalo Grove, Tuesday, 10 November
Overcast. High 46°, low 40°.
0Buffalo Grove, Wednesday, 11 November
Partly cloudy. High 42°, low 36°.
0.06Buffalo Grove, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Buffalo 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.
0.05
Buffalo 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.
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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