2021 Long Range Weather Forecast for Norristown, 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

May 2021 Long Range Weather Forecast for Atlantic Corridor
DatesWeather Conditions
May 1-6Showers, cool
May 7-14Rainy periods; warm, then cool
May 15-19Sunny, cool
May 20-26Rainy periods, cool
May 27-31Sunny, cool
Maytemperature 61° (1° below avg.)
precipitation 2" (1" below avg.)

June 2021 Long Range Weather Forecast for Atlantic Corridor
DatesWeather Conditions
Jun 1-6Sunny; hot, then cool
Jun 7-13Scattered showers, warm
Jun 14-19Isolated t-storms, hot
Jun 20-30Scattered t-storms, turning cool
Junetemperature 75° (4° above avg.)
precipitation 2" (1.5" below avg.)

Annual Weather Summary
November 2020 to October 2021

Winter temperatures will be above normal, on average, with the coldest periods in mid-December and early and mid-January. Precipitation will be near normal, with mostly below-normal snowfall. The snowiest periods will occur in mid-December and 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 hotter than normal, with the hottest periods in early and mid-June, early to mid-July, and early to mid-August. Rainfall will be near normal, especially in the south. Watch for a hurricane in early August. September and October will be cooler and mostly rainier than normal. Watch for a tropical storm threat in early to mid-September.

Map showing Old Farmer's Almanac long range weather region number 2

About the Atlantic Corridor Region

The Atlantic Corridor long range weather region includes all or part of the following states: CONNECTICUT (Bridgeport, Hartford, New Haven, Stamford, Waterbury), DELAWARE (Bear, Dover, Newark, Pike Creek, Wilmington), DISTRICT OF COLUMBIA (Washington), MARYLAND (Baltimore, Columbia, Dundalk, Ellicott City, Silver Spring), MASSACHUSETTS (Boston, Brockton, Cambridge, New Bedford, Worcester), NEW JERSEY (Edison, Elizabeth, Jersey City, Newark, Paterson), NEW YORK (Hempstead, Mount Vernon, New Rochelle, New York, Yonkers), PENNSYLVANIA (Chester, Levittown, Norristown, Philadelphia, Radnor), RHODE ISLAND (Cranston, East Providence, Pawtucket, Providence, Warwick), VIRGINIA (Alexandria, Arlington, Hampton, Newport News, Richmond).

Atlantic Corridor Neighboring Regions

Here are the regions that neighbor the Atlantic Corridor long range weather region:

Temperature and Precipitation November 2020 to October 2021

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