Weather in Half Day, IL
Half Day, Wednesday, 21 October, 06:20
Clear. Feels like 46°. High 71°, low 44°.
Monthly outlook for Half Day, IL: average high 60.8°, average low 49.1°. That is 3.8° above the climate normal for October. Precipitation is expected on 7 days (about 1.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 October (72.2°), the coolest 30 October (38.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 62.5° | 55.2° | +4.1° |
| 31 October – 9 November | 57.8° | 51.2° | +3.7° |
| 10 November – 19 November | at normal | 46° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Highwood (6 mi).
0
Half Day, Thursday, 22 October
Clear. High 72°, low 45°.
0
Half Day, Friday, 23 October
Mostly clear. High 67°, low 52°.
0
Half Day, Saturday, 24 October
Overcast. High 67°, low 50°.
0Half Day, Sunday, 25 October
Overcast. High 69°, low 51°.
0Half Day, Monday, 26 October
Overcast. High 65°, low 52°.
0.11
Half Day, Tuesday, 27 October
Light rain. High 53°, low 51°.
0.16Half Day, Wednesday, 28 October
Rain. High 59°, low 51°.
0.14Half Day, Thursday, 29 October
Rain. High 53°, low 42°.
0Half Day, Friday, 30 October
Clear. High 50°, low 38°.
0Half Day, Saturday, 31 October
Overcast. High 51°, low 42°.
0.43Half Day, Sunday, 1 November
Rain. High 51°, low 46°.
0.2Half Day, Monday, 2 November
Light rain. High 54°, low 51°.
0Half Day, Tuesday, 3 November
Overcast. High 57°, low 52°.
0.61Half Day, Wednesday, 4 November
Rain. High 64°, low 53°.
0.14Half Day, Thursday, 5 November
Rain. High 70°, low 63°.
0.09
Half Day, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Half Day, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Half Day, Sunday, 8 November
Climate normal for this date — 60-year average.
0.12
Half Day, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Half Day, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Half Day, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Half Day, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Half Day, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Half Day, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Half Day, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Half Day, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Half Day, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.11Half Day, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Half Day, Thursday, 19 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 Half Day, 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 Half Day, 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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