2017 Long Range Weather Forecast for Allentown, PA

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Complete 2017 Long Range Weather Forecast for the Appalachians Region, November 2016 to October 2017 includes week-by-week details. Instant access via digital download!

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How to Read Long-Range Weather Forecasts

Long-range predictions show weather trends in temperatures and precipitation. For example, will the winter be colder or warmer than average? Will there be more or less snow than what's typical for your area?  Our famous predictions (traditionally 80% accurate) are made 18 months in advance, and meant to help you make more informed decisions for long-term planning.

Here on Almanac.com, we provide free long-range forecasts for the next 30 to 60 days covering U.S. and Canadian regions. Find all 12 months of predictions in the annual Old Farmer's Almanac.

Free 2-Month Weather Forecast

AUGUST 2016: temperature 71° (avg.); precipitation 2.5" (1" below avg.); Aug 1-4: Sunny, hot; Aug 5-9: T-storms, then sunny, cool; Aug 10-16: Scattered t-storms, warm; Aug 17-19: Sunny, cool; Aug 20-26: T-storms, then sunny, cool; Aug 27-31: Sunny, very warm.

SEPTEMBER 2016: temperature 67° (3° above avg.); precipitation 3.5" (avg.); Sep 1-3: Sunny, hot; Sep 4-8: T-storms, then sunny, warm; Sep 9-14: Scattered t-storms, warm; Sep 15-18: Sunny, cool; Sep 19-23: Showers, then sunny, warm; Sep 24-30: Scattered showers, warm.

Annual Weather Summary: November 2016 to October 2017

Winter will be slightly warmer than normal, with near-normal precipitation and above-normal snowfall. The coldest periods will be in early to mid-January, from late January through early February, and in mid- to late February. The snowiest periods will be in mid-November, late January, and early to mid-February.

April and May will be rainier than normal, with temperatures slightly cooler than normal in the north and slightly warmer than normal in the south.

Summer will be cooler and rainier than normal, with the hottest periods in mid-July and mid-August. Tropical rains will bring a chance of flooding in mid-June.

September and October will be cooler than normal, with near-normal rainfall.

Map showing Old Farmer's Almanac long range weather region number 3

About the Appalachians Region

The Appalachians long range weather region includes all or part of the following states: MARYLAND (Aspen Hill, Bethesda, Frederick, Gaithersburg, Silver Spring), NEW JERSEY (Augusta, Belvidere, Branchville, Newton, Swartswood), NEW YORK (Auburn, Binghamton, Elmira, Ithaca, Syracuse), NORTH CAROLINA (Asheville, Hickory, Kernersville, Morganton, Winston-Salem), PENNSYLVANIA (Allentown, Altoona, Lancaster, Reading, Scranton), TENNESSEE (Mountain City, Roan Mountain, Trade), VIRGINIA (Arlington, Burke, Lynchburg, Reston, Roanoke), WEST VIRGINIA (Charles Town, Keyser, Martinsburg, Petersburg, Ranson).

Appalachians Neighboring Regions

Here are the regions that neighbor the Appalachians long range weather region:

Temperature and Precipitation November 2016 to October 2017

Temperature and Precipitation Graph