Weather in Porterfield, IL
Porterfield, Wednesday, 21 October, 05:14
Clear. Feels like 48°. High 74°, low 46°.
Monthly outlook for Porterfield, IL: average high 63.1°, average low 49.5°. That is 2.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.8 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 22 October (74.5°), the coolest 31 October (38.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 65.2° | 59.2° | +3.3° |
| 31 October – 9 November | 59.7° | 54.7° | +2.8° |
| 10 November – 19 November | at normal | 49.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Toluca (6 mi).
0
Porterfield, Thursday, 22 October
Clear. High 74°, low 47°.
0Porterfield, Friday, 23 October
Clear. High 72°, low 50°.
0
Porterfield, Saturday, 24 October
Overcast. High 70°, low 51°.
0Porterfield, Sunday, 25 October
Overcast. High 72°, low 52°.
0Porterfield, Monday, 26 October
Overcast. High 72°, low 54°.
0.03
Porterfield, Tuesday, 27 October
Light rain. High 56°, low 52°.
0.15Porterfield, Wednesday, 28 October
Rain. High 59°, low 51°.
0.02Porterfield, Thursday, 29 October
Light rain. High 50°, low 42°.
0Porterfield, Friday, 30 October
Clear. High 53°, low 39°.
0Porterfield, Saturday, 31 October
Overcast. High 50°, low 38°.
0.39Porterfield, Sunday, 1 November
Rain. High 53°, low 47°.
0.53Porterfield, Monday, 2 November
Rain. High 56°, low 53°.
0Porterfield, Tuesday, 3 November
Overcast. High 62°, low 54°.
0.61Porterfield, Wednesday, 4 November
Rain. High 68°, low 58°.
0.04Porterfield, Thursday, 5 November
Light rain. High 69°, low 59°.
0.08
Porterfield, Friday, 6 November
Climate normal for this date — 60-year average.
0.04
Porterfield, Saturday, 7 November
Climate normal for this date — 60-year average.
0.05Porterfield, Sunday, 8 November
Climate normal for this date — 60-year average.
0.14
Porterfield, Monday, 9 November
Climate normal for this date — 60-year average.
0.14Porterfield, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.06Porterfield, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.07Porterfield, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Porterfield, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Porterfield, Saturday, 14 November
Climate normal for this date — 60-year average.
0.08Porterfield, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Porterfield, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Porterfield, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.12Porterfield, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Porterfield, Thursday, 19 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 Porterfield, 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 Porterfield, 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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