Weather in Williamson, IA
Williamson, Friday, 9 October, 11:09
Clear. Feels like 71°. High 82°, low 59°.
Monthly outlook for Williamson, IA: average high 65.6°, average low 50.1°. That is 1.7° above the climate normal for October. Precipitation is expected on 6 days (about 2.9 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 12 October (85.2°), the coolest 24 October (30°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 69.4° | 63.5° | +3.3° |
| 19 October – 28 October | 59.3° | 59.6° | -0.2° |
| 29 October – 7 November | at normal | 54.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Chariton (6 mi).
0
Williamson, Saturday, 10 October
Overcast. High 84°, low 63°.
0Williamson, Sunday, 11 October
Clear. High 82°, low 59°.
0Williamson, Monday, 12 October
Clear. High 85°, low 71°.
0Williamson, Tuesday, 13 October
Overcast. High 73°, low 62°.
0.12
Williamson, Wednesday, 14 October
Light rain. High 66°, low 60°.
1.71Williamson, Thursday, 15 October
Heavy rain. High 62°, low 57°.
0.12Williamson, Friday, 16 October
Light rain. High 55°, low 42°.
0Williamson, Saturday, 17 October
Clear. High 47°, low 34°.
0Williamson, Sunday, 18 October
Clear. High 58°, low 34°.
0
Williamson, Monday, 19 October
Partly cloudy. High 65°, low 42°.
0Williamson, Tuesday, 20 October
Partly cloudy. High 65°, low 45°.
0.04Williamson, Wednesday, 21 October
Light rain. High 64°, low 52°.
0.74Williamson, Thursday, 22 October
Heavy rain. High 68°, low 53°.
0Williamson, Friday, 23 October
Clear. High 49°, low 39°.
0Williamson, Saturday, 24 October
Clear. High 46°, low 30°.
0.04
Williamson, Sunday, 25 October
Climate normal for this date — 60-year average.
0.11Williamson, Monday, 26 October
Climate normal for this date — 60-year average.
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.
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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