Weather in Plainfield, IL
Plainfield, Saturday, 10 October, 15:40
Overcast. Feels like 80°. High 80°, low 59°.
Monthly outlook for Plainfield, IL: average high 62.5°, average low 47.3°. That is 0.6° above the climate normal for October. Precipitation is expected on 2 days (about 0.6 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 12 October (81.9°), the coolest 18 October (28.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 64.1° | 62.5° | +0.9° |
| 20 October – 29 October | 59.8° | 58.6° | +0.7° |
| 30 October – 8 November | at normal | 54.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Joliet (8 mi).
0
Plainfield, Sunday, 11 October
Clear. High 78°, low 57°.
0Plainfield, Monday, 12 October
Overcast. High 82°, low 64°.
0Plainfield, Tuesday, 13 October
Clear. High 81°, low 67°.
0.21
Plainfield, Wednesday, 14 October
Rain. High 71°, low 58°.
0.34Plainfield, Thursday, 15 October
Rain. High 59°, low 54°.
0.01Plainfield, Friday, 16 October
Light rain. High 55°, low 40°.
0.03
Plainfield, Saturday, 17 October
Light snow. High 41°, low 34°.
0Plainfield, Sunday, 18 October
Clear. High 46°, low 29°.
0Plainfield, Monday, 19 October
Overcast. High 50°, low 32°.
0Plainfield, Tuesday, 20 October
Clear. High 58°, low 36°.
0Plainfield, Wednesday, 21 October
Clear. High 64°, low 42°.
0Plainfield, Thursday, 22 October
Overcast. High 65°, low 48°.
0.01Plainfield, Friday, 23 October
Light rain. High 53°, low 46°.
0Plainfield, Saturday, 24 October
Overcast. High 58°, low 46°.
0Plainfield, Sunday, 25 October
Clear. High 61°, low 47°.
0.11
Plainfield, Monday, 26 October
Climate normal for this date — 60-year average.
0.09
Plainfield, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Plainfield, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.06Plainfield, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Plainfield, Friday, 30 October
Climate normal for this date — 60-year average.
0.14Plainfield, Saturday, 31 October
Climate normal for this date — 60-year average.
0.17Plainfield, Sunday, 1 November
Climate normal for this date — 60-year average.
0.1Plainfield, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Plainfield, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Plainfield, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Plainfield, Thursday, 5 November
Climate normal for this date — 60-year average.
0.09Plainfield, Friday, 6 November
Climate normal for this date — 60-year average.
0.06Plainfield, Saturday, 7 November
Climate normal for this date — 60-year average.
0.06
Plainfield, Sunday, 8 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 Plainfield, 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 Plainfield, 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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