Weather in Round Lake, IL
Round Lake, Friday, 6 November, 12:28
Overcast. Feels like 43°. High 45°, low 34°.
Monthly outlook for Round Lake, IL: average high 53.7°, average low 41.2°. That is 3.9° above the climate normal for November. Precipitation is expected on 3 days (about 0.4 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 20 November (63.2°), the coolest 13 November (28.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 6 November – 15 November | 50.8° | 47.7° | +1.8° |
| 16 November – 25 November | 58.5° | 44° | +8° |
| 26 November – 5 December | at normal | 39.1° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (3 mi).
0
Round Lake, Saturday, 7 November
Partly cloudy. High 49°, low 31°.
0
Round Lake, Sunday, 8 November
Clear. High 58°, low 40°.
0Round Lake, Monday, 9 November
Overcast. High 56°, low 38°.
0Round Lake, Tuesday, 10 November
Clear. High 59°, low 44°.
0.11
Round Lake, Wednesday, 11 November
Light rain. High 53°, low 39°.
0
Round Lake, Thursday, 12 November
Mostly clear. High 44°, low 32°.
0Round Lake, Friday, 13 November
Overcast. High 42°, low 29°.
0Round Lake, Saturday, 14 November
Clear. High 48°, low 31°.
0Round Lake, Sunday, 15 November
Mostly clear. High 56°, low 37°.
0Round Lake, Monday, 16 November
Overcast. High 60°, low 48°.
0Round Lake, Tuesday, 17 November
Overcast. High 54°, low 50°.
0Round Lake, Wednesday, 18 November
Overcast. High 55°, low 47°.
0.11Round Lake, Thursday, 19 November
Light rain. High 59°, low 53°.
0.02Round Lake, Friday, 20 November
Light rain. High 63°, low 53°.
0.13Round Lake, Saturday, 21 November
Light rain. High 60°, low 53°.
0.04Round Lake, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07Round Lake, Monday, 23 November
Climate normal for this date — 60-year average.
0.08Round Lake, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.09
Round Lake, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.12Round Lake, Thursday, 26 November
Climate normal for this date — 60-year average.
0.21Round Lake, Friday, 27 November
Climate normal for this date — 60-year average.
0.12Round Lake, Saturday, 28 November
Climate normal for this date — 60-year average.
0.08Round Lake, Sunday, 29 November
Climate normal for this date — 60-year average.
0.07Round Lake, Monday, 30 November
Climate normal for this date — 60-year average.
0.14Round Lake, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.07Round Lake, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.09Round Lake, Thursday, 3 December
Climate normal for this date — 60-year average.
0.06Round Lake, Friday, 4 December
Climate normal for this date — 60-year average.
0.07Round Lake, Saturday, 5 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 Round Lake, 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 Round Lake, 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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