Weather in Big Rock, IL
Big Rock, Tuesday, 10 November, 00:22
Partly cloudy. Feels like 41°. High 63°, low 42°.
Monthly outlook for Big Rock, IL: average high 48.4°, average low 37.1°. That is 1.1° above the climate normal for November. Precipitation is expected on 4 days (about 0.9 inches), against a normal of 4 days and 1.3 inches. The warmest day looks like 10 November (62.7°), the coolest 14 November (27.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 November – 19 November | 49.2° | 47.8° | +0.8° |
| 20 November – 29 November | 47.1° | 43.4° | +2.1° |
| 30 November – 9 December | at normal | 38° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Boulder Hill (11 mi).
0.35
Big Rock, Wednesday, 11 November
Rain. High 58°, low 41°.
0
Big Rock, Thursday, 12 November
Overcast. High 43°, low 33°.
0Big Rock, Friday, 13 November
Overcast. High 42°, low 33°.
0
Big Rock, Saturday, 14 November
Clear. High 42°, low 28°.
0Big Rock, Sunday, 15 November
Clear. High 45°, low 28°.
0Big Rock, Monday, 16 November
Overcast. High 45°, low 34°.
0Big Rock, Tuesday, 17 November
Clear. High 48°, low 35°.
0Big Rock, Wednesday, 18 November
Clear. High 51°, low 34°.
0Big Rock, Thursday, 19 November
Overcast. High 56°, low 40°.
0.19Big Rock, Friday, 20 November
Light rain. High 50°, low 47°.
0.15Big Rock, Saturday, 21 November
Light rain. High 49°, low 42°.
0.04Big Rock, Sunday, 22 November
Light rain. High 45°, low 41°.
0.2Big Rock, Monday, 23 November
Light rain. High 55°, low 45°.
0Big Rock, Tuesday, 24 November
Light rain. High 47°, low 39°.
0Big Rock, Wednesday, 25 November
Overcast. High 36°, low 30°.
0.11
Big Rock, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Big Rock, Friday, 27 November
Climate normal for this date — 60-year average.
0.12
Big Rock, Saturday, 28 November
Climate normal for this date — 60-year average.
0.07Big Rock, Sunday, 29 November
Climate normal for this date — 60-year average.
0.08Big Rock, Monday, 30 November
Climate normal for this date — 60-year average.
0.15Big Rock, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.06Big Rock, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.08Big Rock, Thursday, 3 December
Climate normal for this date — 60-year average.
0.06Big Rock, Friday, 4 December
Climate normal for this date — 60-year average.
0.07Big Rock, Saturday, 5 December
Climate normal for this date — 60-year average.
0.06Big Rock, Sunday, 6 December
Climate normal for this date — 60-year average.
0.12Big Rock, Monday, 7 December
Climate normal for this date — 60-year average.
0.07Big Rock, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.08Big Rock, Wednesday, 9 December
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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