Weather in Lake Catherine, IL
Lake Catherine, Friday, 23 October, 12:35
Clear. Feels like 68°. High 70°, low 47°.
Monthly outlook for Lake Catherine, IL: average high 62.5°, average low 49.5°. That is 5° above the climate normal for October. Precipitation is expected on 5 days (about 0.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 25 October (70.2°), the coolest 30 October (38.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 23 October – 1 November | 61.7° | 54.9° | +3.8° |
| 2 November – 11 November | 63.8° | 50.1° | +7.6° |
| 12 November – 21 November | at normal | 45.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (8 mi).
0.02
Lake Catherine, Saturday, 24 October
Light rain. High 68°, low 47°.
0Lake Catherine, Sunday, 25 October
Clear. High 70°, low 48°.
0
Lake Catherine, Monday, 26 October
Overcast. High 58°, low 51°.
0.02Lake Catherine, Tuesday, 27 October
Light rain. High 56°, low 49°.
0Lake Catherine, Wednesday, 28 October
Clear. High 68°, low 52°.
0.08Lake Catherine, Thursday, 29 October
Light rain. High 62°, low 45°.
0Lake Catherine, Friday, 30 October
Overcast. High 51°, low 38°.
0.11Lake Catherine, Saturday, 31 October
Light rain. High 53°, low 46°.
0Lake Catherine, Sunday, 1 November
Overcast. High 62°, low 51°.
0Lake Catherine, Monday, 2 November
Overcast. High 63°, low 51°.
0.41Lake Catherine, Tuesday, 3 November
Light rain. High 57°, low 55°.
0.03Lake Catherine, Wednesday, 4 November
Light rain. High 63°, low 57°.
0.1Lake Catherine, Thursday, 5 November
Light rain. High 67°, low 53°.
0.06Lake Catherine, Friday, 6 November
Light rain. High 64°, low 50°.
0Lake Catherine, Saturday, 7 November
Clear. High 68°, low 51°.
0.04
Lake Catherine, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11
Lake Catherine, Monday, 9 November
Climate normal for this date — 60-year average.
0.11Lake Catherine, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Lake Catherine, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06
Lake Catherine, Thursday, 12 November
Climate normal for this date — 60-year average.
0.05Lake Catherine, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Lake Catherine, Saturday, 14 November
Climate normal for this date — 60-year average.
0.08Lake Catherine, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Lake Catherine, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Lake Catherine, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Lake Catherine, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Lake Catherine, Thursday, 19 November
Climate normal for this date — 60-year average.
0.07Lake Catherine, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Lake Catherine, 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 Lake Catherine, 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 Lake Catherine, 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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