Weather in Round Lake, IL
Round Lake, Sunday, 1 November, 17:54
Overcast. Feels like 58°. High 64°, low 52°.
Monthly outlook for Round Lake, IL: average high 55.5°, average low 45.6°. That is 3.7° above the climate normal for November. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 3 November (70.5°), the coolest 12 November (34.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 1 November – 10 November | 58.3° | 50.8° | +4.1° |
| 11 November – 20 November | 50.8° | 45.5° | +2.9° |
| 21 November – 30 November | at normal | 41.4° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (3 mi).
0.02
Round Lake, Monday, 2 November
Light rain. High 60°, low 54°.
0.52Round Lake, Tuesday, 3 November
Rain. High 71°, low 59°.
0.3Round Lake, Wednesday, 4 November
Rain. High 64°, low 55°.
0Round Lake, Thursday, 5 November
Light rain. High 54°, low 50°.
0.06Round Lake, Friday, 6 November
Light rain. High 53°, low 47°.
0Round Lake, Saturday, 7 November
Overcast. High 51°, low 45°.
0Round Lake, Sunday, 8 November
Overcast. High 52°, low 42°.
0
Round Lake, Monday, 9 November
Partly cloudy. High 55°, low 39°.
0Round Lake, Tuesday, 10 November
Partly cloudy. High 59°, low 43°.
0
Round Lake, Wednesday, 11 November
Clear. High 48°, low 38°.
0Round Lake, Thursday, 12 November
Clear. High 47°, low 34°.
0Round Lake, Friday, 13 November
Clear. High 48°, low 36°.
0.78Round Lake, Saturday, 14 November
Rain. High 56°, low 48°.
0.04Round Lake, Sunday, 15 November
Light rain. High 49°, low 46°.
0Round Lake, Monday, 16 November
Clear. High 57°, low 42°.
0.1Round Lake, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Round Lake, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Round Lake, Thursday, 19 November
Climate normal for this date — 60-year average.
0.07
Round Lake, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Round Lake, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04
Round 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.
0.09Round 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.
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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