Weather in Big Rock, IL
Big Rock, Monday, 19 October, 19:26
Overcast. Feels like 52°. High 68°, low 40°.
Monthly outlook for Big Rock, IL: average high 58.4°, average low 41.5°. That is 0.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 5 days and 1.5 inches. The warmest day looks like 22 October (69.4°), the coolest 29 October (28.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 61.3° | 58.2° | +1.7° |
| 29 October – 7 November | 53.6° | 54.2° | -0.4° |
| 8 November – 17 November | at normal | 48.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Boulder Hill (11 mi).
0
Big Rock, Tuesday, 20 October
Clear. High 68°, low 43°.
0Big Rock, Wednesday, 21 October
Clear. High 68°, low 43°.
0Big Rock, Thursday, 22 October
Clear. High 69°, low 50°.
0
Big Rock, Friday, 23 October
Partly cloudy. High 61°, low 46°.
0Big Rock, Saturday, 24 October
Overcast. High 61°, low 45°.
0
Big Rock, Sunday, 25 October
Light rain. High 65°, low 46°.
0.01Big Rock, Monday, 26 October
Light rain. High 59°, low 48°.
0Big Rock, Tuesday, 27 October
Overcast. High 52°, low 38°.
0Big Rock, Wednesday, 28 October
Clear. High 42°, low 29°.
0Big Rock, Thursday, 29 October
Clear. High 48°, low 29°.
0Big Rock, Friday, 30 October
Overcast. High 53°, low 32°.
0Big Rock, Saturday, 31 October
Partly cloudy. High 60°, low 42°.
0Big Rock, Sunday, 1 November
Overcast. High 60°, low 48°.
0.38Big Rock, Monday, 2 November
Rain. High 49°, low 44°.
0Big Rock, Tuesday, 3 November
Overcast. High 52°, low 41°.
0.09Big Rock, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Big Rock, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Big Rock, Friday, 6 November
Climate normal for this date — 60-year average.
0.05Big Rock, Saturday, 7 November
Climate normal for this date — 60-year average.
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.
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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