Weather in Forest Lake, IL
Forest Lake, Wednesday, 7 October, 18:51
Clear. Feels like 65°. High 76°, low 55°.
Monthly outlook for Forest Lake, IL: average high 66°, average low 50.6°. That is 3.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.2 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 15 October (85.5°), the coolest 18 October (37.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 7 October – 16 October | 71.2° | 61.3° | +5.5° |
| 17 October – 26 October | 57.3° | 57.1° | +0.1° |
| 27 October – 5 November | at normal | 53.1° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Round Lake Beach (12 mi).
0
Forest Lake, Thursday, 8 October
Mostly clear. High 70°, low 51°.
0.06
Forest Lake, Friday, 9 October
Light rain. High 69°, low 49°.
0
Forest Lake, Saturday, 10 October
Clear. High 77°, low 60°.
0
Forest Lake, Sunday, 11 October
Overcast. High 68°, low 57°.
0.04Forest Lake, Monday, 12 October
Light rain. High 75°, low 54°.
0.02Forest Lake, Tuesday, 13 October
Light rain. High 66°, low 49°.
0Forest Lake, Wednesday, 14 October
Overcast. High 64°, low 50°.
0
Forest Lake, Thursday, 15 October
Partly cloudy. High 85°, low 65°.
0Forest Lake, Friday, 16 October
Clear. High 63°, low 48°.
0Forest Lake, Saturday, 17 October
Mostly clear. High 52°, low 43°.
0Forest Lake, Sunday, 18 October
Clear. High 55°, low 38°.
0Forest Lake, Monday, 19 October
Overcast. High 58°, low 43°.
0.04Forest Lake, Tuesday, 20 October
Light rain. High 59°, low 49°.
0Forest Lake, Wednesday, 21 October
Overcast. High 61°, low 51°.
0Forest Lake, Thursday, 22 October
Overcast. High 59°, low 48°.
0.13
Forest Lake, Friday, 23 October
Climate normal for this date — 60-year average.
0.1Forest Lake, Saturday, 24 October
Climate normal for this date — 60-year average.
0.1Forest Lake, Sunday, 25 October
Climate normal for this date — 60-year average.
0.13Forest Lake, Monday, 26 October
Climate normal for this date — 60-year average.
0.08Forest Lake, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.05Forest Lake, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Forest Lake, Thursday, 29 October
Climate normal for this date — 60-year average.
0.09Forest Lake, Friday, 30 October
Climate normal for this date — 60-year average.
0.12Forest Lake, Saturday, 31 October
Climate normal for this date — 60-year average.
0.16Forest Lake, Sunday, 1 November
Climate normal for this date — 60-year average.
0.14Forest Lake, Monday, 2 November
Climate normal for this date — 60-year average.
0.06Forest Lake, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.1Forest Lake, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Forest Lake, Thursday, 5 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 Forest 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 Forest 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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