Weather in Big Rock, IL
Big Rock, Friday, 23 October, 18:09
Clear. Feels like 62°. High 71°, low 47°.
Monthly outlook for Big Rock, IL: average high 63.9°, average low 49°. That is 4.7° above the climate normal for October. Precipitation is expected on 5 days (about 2.5 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 23 October (71.3°), the coolest 4 November (38.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 66° | 56.8° | +5.1° |
| 2 November – 11 November | 60.3° | 51.9° | +4.7° |
| 12 November – 21 November | at normal | 47° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Boulder Hill (11 mi).
0
Big Rock, Saturday, 24 October
Overcast. High 69°, low 47°.
0
Big Rock, Sunday, 25 October
Partly cloudy. High 70°, low 48°.
0Big Rock, Monday, 26 October
Overcast. High 67°, low 50°.
0Big Rock, Tuesday, 27 October
Overcast. High 64°, low 49°.
0Big Rock, Wednesday, 28 October
Overcast. High 68°, low 55°.
0.09
Big Rock, Thursday, 29 October
Light rain. High 67°, low 49°.
0.01Big Rock, Friday, 30 October
Light rain. High 62°, low 50°.
0.33Big Rock, Saturday, 31 October
Rain. High 58°, low 53°.
0.05Big Rock, Sunday, 1 November
Light rain. High 64°, low 56°.
1.6Big Rock, Monday, 2 November
Heavy rain. High 61°, low 56°.
0.38Big Rock, Tuesday, 3 November
Rain. High 65°, low 47°.
0.01Big Rock, Wednesday, 4 November
Light rain. High 53°, low 39°.
0
Big Rock, Thursday, 5 November
Clear. High 58°, low 43°.
0Big Rock, Friday, 6 November
Partly cloudy. High 61°, low 46°.
0.01Big Rock, Saturday, 7 November
Light rain. High 64°, low 51°.
0.06Big Rock, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Big Rock, Monday, 9 November
Climate normal for this date — 60-year average.
0.12Big Rock, Tuesday, 10 November
Climate normal for this date — 60-year average.
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.
0.05
Big 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.
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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