Weather in Williamson, IA
Williamson, Sunday, 11 October, 12:55
Clear. Feels like 82°. High 83°, low 59°.
Monthly outlook for Williamson, IA: average high 67.3°, average low 51.8°. That is 3.2° above the climate normal for October. Precipitation is expected on 7 days (about 1.5 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 12 October (87.8°), the coolest 17 October (32.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 67.5° | 62.6° | +2.7° |
| 21 October – 30 October | 67.2° | 58.9° | +4.6° |
| 31 October – 9 November | at normal | 53.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Chariton (6 mi).
0
Williamson, Monday, 12 October
Overcast. High 88°, low 68°.
0.3
Williamson, Tuesday, 13 October
Rain. High 79°, low 64°.
0.09Williamson, Wednesday, 14 October
Light rain. High 68°, low 58°.
0.63Williamson, Thursday, 15 October
Rain. High 68°, low 58°.
0Williamson, Friday, 16 October
Clear. High 59°, low 48°.
0Williamson, Saturday, 17 October
Clear. High 47°, low 33°.
0
Williamson, Sunday, 18 October
Mostly clear. High 56°, low 35°.
0Williamson, Monday, 19 October
Overcast. High 62°, low 43°.
0
Williamson, Tuesday, 20 October
Partly cloudy. High 64°, low 45°.
0.14Williamson, Wednesday, 21 October
Light rain. High 60°, low 53°.
0.05Williamson, Thursday, 22 October
Light rain. High 71°, low 55°.
0.26Williamson, Friday, 23 October
Rain. High 74°, low 58°.
0Williamson, Saturday, 24 October
Light rain. High 71°, low 58°.
0.04Williamson, Sunday, 25 October
Light rain. High 74°, low 52°.
0Williamson, Monday, 26 October
Overcast. High 53°, low 43°.
0.08Williamson, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.06Williamson, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.07Williamson, Thursday, 29 October
Climate normal for this date — 60-year average.
0.1
Williamson, Friday, 30 October
Climate normal for this date — 60-year average.
0.15Williamson, Saturday, 31 October
Climate normal for this date — 60-year average.
0.21Williamson, Sunday, 1 November
Climate normal for this date — 60-year average.
0.08Williamson, Monday, 2 November
Climate normal for this date — 60-year average.
0.08Williamson, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.1Williamson, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.07Williamson, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Williamson, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Williamson, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Williamson, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Williamson, Monday, 9 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 Williamson, IA 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 Williamson, IA 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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