Weather in Williamstown, PA
Williamstown, Friday, 9 October, 11:42
Clear. Feels like 63°. High 68°, low 42°.
Monthly outlook for Williamstown, PA: average high 61.2°, average low 43.2°. That is 0.9° below the climate normal for October. Precipitation is expected on 5 days (about 3.6 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (77.5°), the coolest 19 October (30.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 63.5° | 63.9° | -0.2° |
| 19 October – 28 October | 57.2° | 60° | -1.5° |
| 29 October – 7 November | at normal | 56.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — East Hanover (14 mi).
0
Williamstown, Saturday, 10 October
Overcast. High 69°, low 42°.
1.19
Williamstown, Sunday, 11 October
Heavy rain. High 62°, low 47°.
0.06Williamstown, Monday, 12 October
Light rain. High 71°, low 58°.
0.02Williamstown, Tuesday, 13 October
Light rain. High 78°, low 59°.
0Williamstown, Wednesday, 14 October
Overcast. High 64°, low 52°.
0
Williamstown, Thursday, 15 October
Partly cloudy. High 60°, low 41°.
0.2Williamstown, Friday, 16 October
Light rain. High 64°, low 46°.
0.01Williamstown, Saturday, 17 October
Light rain. High 52°, low 42°.
0Williamstown, Sunday, 18 October
Clear. High 48°, low 34°.
0Williamstown, Monday, 19 October
Clear. High 50°, low 31°.
0Williamstown, Tuesday, 20 October
Clear. High 55°, low 34°.
0Williamstown, Wednesday, 21 October
Clear. High 58°, low 39°.
0Williamstown, Thursday, 22 October
Overcast. High 60°, low 41°.
0.2Williamstown, Friday, 23 October
Rain. High 62°, low 45°.
1.9Williamstown, Saturday, 24 October
Rain. High 58°, low 39°.
0.14Williamstown, Sunday, 25 October
Climate normal for this date — 60-year average.
0.1Williamstown, Monday, 26 October
Climate normal for this date — 60-year average.
0.19Williamstown, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.11Williamstown, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.17Williamstown, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Williamstown, Friday, 30 October
Climate normal for this date — 60-year average.
0.07Williamstown, Saturday, 31 October
Climate normal for this date — 60-year average.
0.07Williamstown, Sunday, 1 November
Climate normal for this date — 60-year average.
0.15Williamstown, Monday, 2 November
Climate normal for this date — 60-year average.
0.08Williamstown, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.08Williamstown, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Williamstown, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07
Williamstown, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Williamstown, 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 Williamstown, PA 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 Williamstown, PA 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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