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

March 2021 Long Range Weather Forecast for Appalachians
DatesWeather Conditions
Mar 1-2Rain to snow
Mar 3-8Rain and snow showers
Mar 9-12Snow showers, cold
Mar 13-16Rainy, mild, then sunny, cold
Mar 17-25Rainy periods, mild
Mar 26-31Showers, cool
Marchtemperature 41° (1° above avg.)
precipitation 4" (1" above avg.)

April 2021 Long Range Weather Forecast for Appalachians
DatesWeather Conditions
Apr 1-3Sunny, cool
Apr 4-15Showers, then sunny, turning hot
Apr 16-22Rainy periods, cool
Apr 23-27Showers, cool
Apr 28-30Sunny, warm
Apriltemperature 53° (3° above avg.)
precipitation 1" (1.5" below avg.)

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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The almanac predicted in my region a quiet mild February. Not only did we have our second largest snowfall ever recorded(nearly 30 inches), this month is now on par to be our snowiest Feb ever.

The Amanac has been accurate on many occasions, but it sure had missed this one.

Extreme Weather

The weather were receiving in the Codorus Valley is far cooler in usual, most weather sporadic like usual, with the exception of brisk Northern winds with sub freezing temps, and major transitions of wind and snow over to torrential spring like downpours.
The major conflict in this area are the ocean borne moisture laden weather to the East and the frigid temps moving from the Northwest combining in clashes with the moisture stream moving from the south West.

Forecast off for central PA

We have had plenty of precipitation and cold(not mild) temperatures as predicted for our region!

Your forecast has been all

Your forecast has been all wrong for Northeast Pa. also.

What happened with your forecast for NY State ?

The forecast is all wrong for NY state.


The Editors's picture

Aw, come on: all wrong? for the whole state??

Could happen but here’s hoping we were right some of the time… reports don’t come in until late March.

snow blowers

every store is sold out of 2stage snow blowers ...Now I have to shovel a 9car length driveway. Nothing like procastinating. Da@$ lt I should have bought the f@#$#$@ snowblower when my last piece of s#$@ died

snow blowing

The Editors's picture

I think this is a favorable view of the forecast … ? 

Just take your time; don’t let the snow get you.


In Elmira, NY, we got 21 inches just before Christmas, and some of it is still here, all you southern folk feel free to come on up and get all you want!

Asheville weather changes

There is no predicting blizzards especially here in WNC. The forecast for rain caught everyone off guard. Thunder snow is an amazing phenomenon and the rumble was long and loud as the rain changed to snow. '93