Weather in Bannockburn, IL
Bannockburn, Wednesday, 11 November, 14:20
Rain. Feels like 43°. High 52°, low 40°.
Monthly outlook for Bannockburn, IL: average high 46°, average low 34.5°. That is 0.8° above the climate normal for November. Precipitation is expected on 3 days (about 1.1 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 21 November (58.6°), the coolest 26 November (17.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 November – 20 November | 49.8° | 45.6° | +2.3° |
| 21 November – 30 November | 39.7° | 41.9° | -1.2° |
| 1 December – 10 December | at normal | 37.2° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (3 mi).
0
Bannockburn, Thursday, 12 November
Partly cloudy. High 49°, low 35°.
0
Bannockburn, Friday, 13 November
Overcast. High 43°, low 33°.
0
Bannockburn, Saturday, 14 November
Clear. High 44°, low 30°.
0Bannockburn, Sunday, 15 November
Clear. High 46°, low 30°.
0Bannockburn, Monday, 16 November
Clear. High 48°, low 31°.
0Bannockburn, Tuesday, 17 November
Clear. High 51°, low 37°.
0Bannockburn, Wednesday, 18 November
Partly cloudy. High 53°, low 40°.
0Bannockburn, Thursday, 19 November
Overcast. High 55°, low 42°.
0Bannockburn, Friday, 20 November
Overcast. High 59°, low 48°.
0.46Bannockburn, Saturday, 21 November
Rain. High 59°, low 51°.
0.57Bannockburn, Sunday, 22 November
Rain. High 56°, low 38°.
0Bannockburn, Monday, 23 November
Overcast. High 35°, low 30°.
0Bannockburn, Tuesday, 24 November
Partly cloudy. High 36°, low 26°.
0Bannockburn, Wednesday, 25 November
Overcast. High 28°, low 23°.
0Bannockburn, Thursday, 26 November
Clear. High 25°, low 17°.
0.21Bannockburn, Friday, 27 November
Climate normal for this date — 60-year average.
0.12
Bannockburn, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Bannockburn, Sunday, 29 November
Climate normal for this date — 60-year average.
0.07Bannockburn, Monday, 30 November
Climate normal for this date — 60-year average.
0.15Bannockburn, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.07Bannockburn, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Bannockburn, Thursday, 3 December
Climate normal for this date — 60-year average.
0.06Bannockburn, Friday, 4 December
Climate normal for this date — 60-year average.
0.08Bannockburn, Saturday, 5 December
Climate normal for this date — 60-year average.
0.06Bannockburn, Sunday, 6 December
Climate normal for this date — 60-year average.
0.12Bannockburn, Monday, 7 December
Climate normal for this date — 60-year average.
0.08Bannockburn, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.09Bannockburn, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.09Bannockburn, Thursday, 10 December
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 Bannockburn, 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 Bannockburn, 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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