Weather in Lemont, IL
Lemont, Monday, 26 October, 11:36
Clear. Feels like 62°. High 63°, low 49°.
Monthly outlook for Lemont, IL: average high 62.2°, average low 49.2°. That is 4.5° above the climate normal for October. Precipitation is expected on 5 days (about 1.9 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 28 October (70.2°), the coolest 7 November (39.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 63.8° | 55.4° | +4.7° |
| 5 November – 14 November | 59.5° | 50.2° | +5.2° |
| 15 November – 24 November | at normal | 46.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Orland Hills (9 mi).
0
Lemont, Tuesday, 27 October
Overcast. High 69°, low 50°.
0Lemont, Wednesday, 28 October
Clear. High 70°, low 55°.
0.07
Lemont, Thursday, 29 October
Light rain. High 69°, low 55°.
0.01Lemont, Friday, 30 October
Light rain. High 67°, low 48°.
0.65Lemont, Saturday, 31 October
Rain. High 65°, low 54°.
0.2Lemont, Sunday, 1 November
Light rain. High 59°, low 57°.
0.03Lemont, Monday, 2 November
Light rain. High 61°, low 57°.
0.78Lemont, Tuesday, 3 November
Rain. High 61°, low 46°.
0.12Lemont, Wednesday, 4 November
Light rain. High 53°, low 46°.
0Lemont, Thursday, 5 November
Overcast. High 64°, low 45°.
0
Lemont, Friday, 6 November
Partly cloudy. High 64°, low 47°.
0Lemont, Saturday, 7 November
Overcast. High 51°, low 40°.
0
Lemont, Sunday, 8 November
Mostly clear. High 56°, low 44°.
0Lemont, Monday, 9 November
Overcast. High 59°, low 46°.
0Lemont, Tuesday, 10 November
Partly cloudy. High 62°, low 47°.
0.07Lemont, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.06Lemont, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Lemont, Friday, 13 November
Climate normal for this date — 60-year average.
0.08
Lemont, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Lemont, Sunday, 15 November
Climate normal for this date — 60-year average.
0.05Lemont, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Lemont, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.14Lemont, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.08Lemont, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Lemont, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Lemont, Saturday, 21 November
Climate normal for this date — 60-year average.
0.05Lemont, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Lemont, Monday, 23 November
Climate normal for this date — 60-year average.
0.08Lemont, Tuesday, 24 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 Lemont, 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 Lemont, 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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