Weather in Preston, IL
Preston, Monday, 12 October, 05:45
Partly cloudy. Feels like 66°. High 92°, low 65°.
Monthly outlook for Preston, IL: average high 76.5°, average low 57.6°. That is 5.5° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 13 October (94.2°), the coolest 18 October (38.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 12 October – 21 October | 77.4° | 67.8° | +5.3° |
| 22 October – 31 October | 74.9° | 64° | +6.1° |
| 1 November – 10 November | at normal | 59.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Red Bud (10 mi).
0
Preston, Tuesday, 13 October
Clear. High 94°, low 64°.
0.28
Preston, Wednesday, 14 October
Heavy rain. High 81°, low 73°.
0.41Preston, Thursday, 15 October
Rain. High 81°, low 70°.
0.02Preston, Friday, 16 October
Light rain. High 70°, low 54°.
0Preston, Saturday, 17 October
Clear. High 63°, low 45°.
0Preston, Sunday, 18 October
Clear. High 68°, low 39°.
0
Preston, Monday, 19 October
Mostly clear. High 76°, low 50°.
0.1Preston, Tuesday, 20 October
Light rain. High 69°, low 59°.
0Preston, Wednesday, 21 October
Clear. High 79°, low 57°.
0Preston, Thursday, 22 October
Mostly clear. High 82°, low 57°.
0
Preston, Friday, 23 October
Overcast. High 84°, low 64°.
0Preston, Saturday, 24 October
Overcast. High 71°, low 60°.
0.02Preston, Sunday, 25 October
Light rain. High 84°, low 61°.
0Preston, Monday, 26 October
Overcast. High 61°, low 58°.
0
Preston, Tuesday, 27 October
Partly cloudy. High 67°, low 45°.
0.06Preston, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.12Preston, Thursday, 29 October
Climate normal for this date — 60-year average.
0.12Preston, Friday, 30 October
Climate normal for this date — 60-year average.
0.17
Preston, Saturday, 31 October
Climate normal for this date — 60-year average.
0.15Preston, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Preston, Monday, 2 November
Climate normal for this date — 60-year average.
0.09Preston, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.13Preston, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.15Preston, Thursday, 5 November
Climate normal for this date — 60-year average.
0.1Preston, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Preston, Saturday, 7 November
Climate normal for this date — 60-year average.
0.03Preston, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Preston, Monday, 9 November
Climate normal for this date — 60-year average.
0.14Preston, Tuesday, 10 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 Preston, 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 Preston, 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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