Weather in Herscher, IL
Herscher, Sunday, 18 October, 11:24
Clear. Feels like 55°. High 62°, low 39°.
Monthly outlook for Herscher, IL: average high 64.8°, average low 47.5°. That is 3.1° above the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 24 October (74.3°), the coolest 2 November (37.9°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 66° | 60.2° | +3.2° |
| 28 October – 6 November | 62.9° | 56.5° | +3.5° |
| 7 November – 16 November | at normal | 50.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Cabery (7 mi).
0Herscher, Monday, 19 October
Clear. High 67°, low 39°.
0Herscher, Tuesday, 20 October
Clear. High 67°, low 42°.
0Herscher, Wednesday, 21 October
Clear. High 68°, low 44°.
0
Herscher, Thursday, 22 October
Overcast. High 68°, low 47°.
0
Herscher, Friday, 23 October
Partly cloudy. High 66°, low 48°.
0Herscher, Saturday, 24 October
Overcast. High 74°, low 52°.
0.06
Herscher, Sunday, 25 October
Light rain. High 66°, low 50°.
0.02Herscher, Monday, 26 October
Light rain. High 53°, low 50°.
0Herscher, Tuesday, 27 October
Overcast. High 70°, low 51°.
0.08Herscher, Wednesday, 28 October
Light rain. High 64°, low 59°.
0.31Herscher, Thursday, 29 October
Rain. High 68°, low 60°.
0.59Herscher, Friday, 30 October
Rain. High 73°, low 56°.
0.54Herscher, Saturday, 31 October
Rain. High 66°, low 48°.
0Herscher, Sunday, 1 November
Overcast. High 50°, low 39°.
0
Herscher, Monday, 2 November
Mostly clear. High 56°, low 38°.
0.07Herscher, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Herscher, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Herscher, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07
Herscher, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Herscher, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05Herscher, Sunday, 8 November
Climate normal for this date — 60-year average.
0.15Herscher, Monday, 9 November
Climate normal for this date — 60-year average.
0.15Herscher, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.08Herscher, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Herscher, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Herscher, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Herscher, Saturday, 14 November
Climate normal for this date — 60-year average.
0.09Herscher, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Herscher, Monday, 16 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 Herscher, 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 Herscher, 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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