Weather in Buffalo Grove, IL
Buffalo Grove, Wednesday, 28 October, 08:31
Overcast. Feels like 54°. High 73°, low 53°.
Monthly outlook for Buffalo Grove, IL: average high 56.2°, average low 47.6°. That is 3° above the climate normal for October. Precipitation is expected on 8 days (about 4.6 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 28 October (72.9°), the coolest 8 November (38.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 60.5° | 52.4° | +4.5° |
| 7 November – 16 November | 49.1° | 47.2° | +1.1° |
| 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 55°.
0.02Buffalo Grove, Friday, 30 October
Light rain. High 61°, low 44°.
0.64Buffalo Grove, Saturday, 31 October
Rain. High 56°, low 52°.
0Buffalo Grove, Sunday, 1 November
Overcast. High 60°, low 48°.
0.04Buffalo Grove, Monday, 2 November
Light rain. High 64°, low 52°.
2.02Buffalo Grove, Tuesday, 3 November
Heavy rain. High 58°, low 55°.
0.51Buffalo Grove, Wednesday, 4 November
Rain. High 56°, low 55°.
0.52Buffalo Grove, Thursday, 5 November
Rain. High 58°, low 53°.
0
Buffalo Grove, Friday, 6 November
Mostly clear. High 52°, low 41°.
0Buffalo Grove, Saturday, 7 November
Overcast. High 48°, low 41°.
0
Buffalo Grove, Sunday, 8 November
Clear. High 51°, low 39°.
0Buffalo Grove, Monday, 9 November
Overcast. High 54°, low 42°.
0.48Buffalo Grove, Tuesday, 10 November
Rain. High 51°, low 48°.
0.28Buffalo Grove, Wednesday, 11 November
Light rain. High 47°, low 42°.
0.02Buffalo Grove, Thursday, 12 November
Light rain. High 45°, low 42°.
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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