2016 Long Range Weather Forecast for Williamsport, PA

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Complete 2016 Long Range Weather Forecast for the Appalachians Region, November 2015 to October 2016 includes week-by-week details. Digital Download.

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DECEMBER 2015: temperature 35° (3° below avg. north, 1° above south); precipitation 2.5" (0.5" below avg.); Dec 1-3: Sunny, mild; Dec 4-10: Periods of rain and snow north, showers south; Dec 11-13: Sunny, mild; Dec 14-19: Snow showers, cold; Dec 20-23: Sunny, cold; Dec 24-26: Snowstorm; Dec 27-31: Rain, then sunny, cold.

JANUARY 2016: temperature 27° (3° below avg.); precipitation 2.5" (0.5" below avg.); Jan 1-5: Sunny; cold, then mild; Jan 6-13: Snow showers, then flurries, very cold; Jan 14-17: Periods of rain and snow; Jan 18-26: Snow showers, very cold; Jan 27-31: Rain and snow showers, turning quite mild.

Annual Weather Summary: November 2015 to October 2016

Winter will be colder than normal, with precipitation slightly below normal. The coldest period will be in the middle part of January, with other cold periods in mid- and late December and early February. Snowfall will be near normal in Pennsylvania and above normal elsewhere in the region, with the snowiest periods in late December, mid- and late January, and early and mid-February.

April and May will have near-normal temperatures and be slightly rainier than usual.

Summer will be slightly cooler, with the hottest periods in mid-June and early and late August, and rainier than normal.

September and October will be much warmer than normal, with slightly above-normal rainfall.

Temperature and Precipitation November
2015 to October 2016

Temperature and Precipitation Graph