Weather in Big Rock, IL
Big Rock, Monday, 26 October, 09:52
Overcast. Feels like 56°. High 64°, low 48°.
Monthly outlook for Big Rock, IL: average high 61.5°, average low 47.3°. That is 4.2° above the climate normal for October. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 28 October (71.1°), the coolest 7 November (37.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 63.7° | 55.4° | +4.6° |
| 5 November – 14 November | 57.9° | 50° | +4.4° |
| 15 November – 24 November | at normal | 46.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Boulder Hill (11 mi).
0Big Rock, Tuesday, 27 October
Overcast. High 69°, low 49°.
0
Big Rock, Wednesday, 28 October
Mostly clear. High 71°, low 53°.
0.05
Big Rock, Thursday, 29 October
Light rain. High 70°, low 57°.
0Big Rock, Friday, 30 October
Overcast. High 67°, low 47°.
0.15Big Rock, Saturday, 31 October
Light rain. High 66°, low 54°.
0.22Big Rock, Sunday, 1 November
Rain. High 57°, low 55°.
0.02Big Rock, Monday, 2 November
Light rain. High 60°, low 54°.
0.56Big Rock, Tuesday, 3 November
Rain. High 60°, low 45°.
0.09Big Rock, Wednesday, 4 November
Light rain. High 52°, low 43°.
0Big Rock, Thursday, 5 November
Overcast. High 63°, low 43°.
0
Big Rock, Friday, 6 November
Partly cloudy. High 63°, low 44°.
0Big Rock, Saturday, 7 November
Overcast. High 49°, low 38°.
0Big Rock, Sunday, 8 November
Partly cloudy. High 55°, low 39°.
0Big Rock, Monday, 9 November
Partly cloudy. High 58°, low 43°.
0Big Rock, Tuesday, 10 November
Overcast. High 61°, low 45°.
0.06Big Rock, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Big Rock, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Big Rock, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Big Rock, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Big Rock, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Big Rock, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Big Rock, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.13Big Rock, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Big Rock, Thursday, 19 November
Climate normal for this date — 60-year average.
0.08Big Rock, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Big Rock, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Big Rock, Sunday, 22 November
Climate normal for this date — 60-year average.
0.08Big Rock, Monday, 23 November
Climate normal for this date — 60-year average.
0.07Big Rock, Tuesday, 24 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 Big Rock, 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 Big Rock, 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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