2020-2021 Long Range Weather Forecast for Allentown, PA

Get the Long Range Weather for Your Location

See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.

To see long term forecasts for the entire year, pick up a copy of The 2021 Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific.

Free 2-Month Weather Forecast

December 2020 Long Range Weather Forecast for Appalachians
DatesWeather Conditions
Dec 1-7Showers, then sunny, mild
Dec 8-17Showers, then flurries, cold
Dec 18-25Periods of rain and snow, mild
Dec 26-31Snow showers, very cold
Decembertemperature 35° (1° below avg.)
precipitation 2.5" (0.5" below avg.)

January 2021 Long Range Weather Forecast for Appalachians
DatesWeather Conditions
Jan 1-9Snow showers; cold, then mild
Jan 10-12Sunny, frigid
Jan 13-17Snow, then flurries, cold
Jan 18-22Rain to snow
Jan 23-27Rain and snow
Jan 28-31Snow showers, cold
Januarytemperature 28° (2° below avg.)
precipitation 2.5" (1" above avg., north, 1" below south)

Annual Weather Summary
November 2020 to October 2021

Winter will be warmer than normal, with precipitation above normal in the north and below normal in the south. The coldest periods will be in mid- and late December and throughout January. Snowfall will be below normal, with the snowiest period in early March. April and May will be warmer and drier than normal, with an early hot spell in early to mid-April. Summer will be drier than normal, with temperatures near normal in the north and below normal in the south. The hottest periods will be in early June and mid-August. September and October will be cooler and rainier than normal.

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, Frederick, Gaithersburg, Germantown, Rockville), NEW YORK (Binghamton, Cortland, Elmira, Ithaca, Johnson City), NORTH CAROLINA (Asheville, Hickory, Lenoir, Morganton, Winston-Salem), PENNSYLVANIA (Allentown, Bethlehem, Lancaster, Reading, Scranton), VIRGINIA (Burke, Dale City, Lynchburg, Reston, Roanoke), WEST VIRGINIA (Martinsburg).

Appalachians Neighboring Regions

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

Temperature and Precipitation November 2020 to October 2021

Temperature and Precipitation Chart, November 2020 to October 2021 for Allentown, PA

Reader Comments

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Aug 17, 2019

Hello, the Portland, PA.Event Committee would like to hold its 3rd Lights Of Hope event on Aug. 17, 2019. Lights Of Hope is to raise awareness and offer hope and help to our addicts and their loved ones. We are planning a river clean up and a canoe vigil at dusk. The success of this depends heavily on the weather. Please tell me the 10 days leading up to this is going to be beautiful. Thanking you in advance for your forecast.

May Lancaster Wedding

Hello! I will be getting married in Lancaster PA on May 18, 2019. Are you predicting rain for that date or the days leading up to May 18? We are praying for no rain/grass saturation so that we can have an outdoor ceremony!

Rain

Rain on your wedding day is a good sign. It's an old wives tale but it's supposed to mean a long and happy marriage. It rained on my parents wedding day and so far they've beenmarried 16 years

November 2, 2019 Ky wedding

I'm planning a wedding for November 2nd in central Ky and was wondering what the weather prediction is for that day?

Nove. 2, 2019

Our daughter is planning a wedding for Saturday November 2, 2019 outside near Gettysburg, PA, wondering what the long range forecast is?

Nov. 2nd weather

The avg. high is 59 degrees the lows 46 degrees at night.

2020 predictions

When will you have weather predictions for August/September 2020? Does it generally follow the same pattern as the year before? Nervous about planning an outdoor wedding and trying to avoid rain! Thanks :)

Weather for graduation Party

I’m trying to plan a date for a June outdoor graduation party. I’d like to set it on June 22nd , what are the predictions for weather that day? Anyone have any suggestions? Or what weekend would be best closest to that date?

Thank you all and positive blessings.

April wedding

We are planning an outdoor wedding in Bergton Va for April 20, 2019. What are the chances of rain for that week?

Fall Wedding

Which of these 2 dates has the best anticipated weather? September 28 or October 26? Which has a higher chance of rain, and what will the temperature be in october?

thank you!

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