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Williamstown, PA 7-Day Weather Forecast
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Williamstown Weather Forecast
Williamstown, PA Weather Forecast Date: 900 PM EDT Sun Oct 11 2026
Weather forecast for Williamstown, PA
Tonight Lo: 59°F Lo: 15°C |
Tonight... Rain with a slight chance of thunderstorms this evening, then rain likely after midnight. Mild. Near steady temperature in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph, becoming north around 5 mph after midnight. Chance of rain 90%. |
Columbus Day Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Columbus Day... Mostly cloudy with a slight chance of rain in the morning, then partly sunny in the afternoon. Warmer with highs in the lower 70s. North winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20%. |
Tue Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Tuesday... Patchy fog in the morning. Mostly sunny. Warm with highs in the upper 70s. South winds 5 to 10 mph. |
Wed Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Wednesday... Mostly sunny. Warm with highs in the upper 70s. |
| Thu Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Thursday... Mostly sunny. Cooler with highs in the mid 60s. |
Fri Hi: 69°FHi: 21°C Lo: 45°F Lo: 7°C |
Friday... Showers likely. Highs in the upper 60s. Chance of rain 60%. |
Sat Hi: 51°FHi: 11°C Lo: 35°F Lo: 2°C |
Saturday... Partly sunny. Much cooler with highs in the lower 50s. |
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