Weather in Holbrook, IL
Holbrook, Monday, 12 October, 02:02
Overcast. Feels like 61°. High 85°, low 61°.
Monthly outlook for Holbrook, IL: average high 64.1°, average low 50.8°. That is 2.6° above the climate normal for October. Precipitation is expected on 4 days (about 3.5 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 13 October (85.2°), the coolest 18 October (38.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 October – 21 October | 69.8° | 60.6° | +5.2° |
| 22 October – 31 October | 54.5° | 56.9° | -1.3° |
| 1 November – 10 November | at normal | 52.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Blue Island (9 mi).
0
Holbrook, Tuesday, 13 October
Clear. High 85°, low 69°.
0.37
Holbrook, Wednesday, 14 October
Rain. High 71°, low 60°.
0.48Holbrook, Thursday, 15 October
Rain. High 64°, low 59°.
0.03Holbrook, Friday, 16 October
Light rain. High 60°, low 47°.
0Holbrook, Saturday, 17 October
Clear. High 56°, low 41°.
0Holbrook, Sunday, 18 October
Clear. High 60°, low 38°.
0Holbrook, Monday, 19 October
Overcast. High 68°, low 47°.
0Holbrook, Tuesday, 20 October
Overcast. High 72°, low 55°.
0
Holbrook, Wednesday, 21 October
Mostly clear. High 77°, low 60°.
2.11Holbrook, Thursday, 22 October
Heavy rain. High 67°, low 52°.
0
Holbrook, Friday, 23 October
Partly cloudy. High 50°, low 44°.
0Holbrook, Saturday, 24 October
Mostly clear. High 53°, low 39°.
0.45Holbrook, Sunday, 25 October
Rain. High 50°, low 44°.
0.03Holbrook, Monday, 26 October
Light rain. High 57°, low 47°.
0.03Holbrook, Tuesday, 27 October
Light rain. High 51°, low 48°.
0.06Holbrook, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Holbrook, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Holbrook, Friday, 30 October
Climate normal for this date — 60-year average.
0.15
Holbrook, Saturday, 31 October
Climate normal for this date — 60-year average.
0.18Holbrook, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Holbrook, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Holbrook, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Holbrook, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.13Holbrook, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Holbrook, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Holbrook, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06Holbrook, Sunday, 8 November
Climate normal for this date — 60-year average.
0.13Holbrook, Monday, 9 November
Climate normal for this date — 60-year average.
0.13Holbrook, Tuesday, 10 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 Holbrook, 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 Holbrook, 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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