2018 Long Range Weather Forecast for Philadelphia, PA


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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 annual Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific. If your city is located inside a region, the region's forecast will apply to you.

Free 2-Month Weather Forecast

June 2018 Long Range Weather Forecast for Atlantic Corridor
DatesWeather Conditions
Jun 1-5Sunny, hot
Jun 6-9T-storms, then sunny, cool
Jun 10-18Scattered showers, cool
Jun 19-28A few t-storms, warm
Jun 29-30Sunny, hot
Junetemperature 73° (2° above avg.)
precipitation 2.5" (1" below avg.)

July 2018 Long Range Weather Forecast for Atlantic Corridor
DatesWeather Conditions
Jul 1-3Sunny, hot
Jul 4-7T-storms, then sunny, cool
Jul 8-12T-storms, then sunny
Jul 13-18T-storms, then sunny, cool
Jul 19-24T-storms, then sunny, cool
Jul 25-31T-storms, then sunny, hot
Julytemperature 76° (avg.)
precipitation 6" (1" above avg. north, 3" above south)

Annual Weather Summary: November 2017 to October 2018

Winter temperatures will be above normal, on average, with the coldest periods in early to mid-December, late December, early January, and early February. Precipitation will be above normal, with below-normal snowfall. The snowiest periods will occur in late December and mid- to late January. April and May will be slightly rainier than normal, with near-normal temperatures. Summer will be hotter than normal, with the hottest periods in early June, early July, and early and mid- to late August. Rainfall will be below normal in the north and above in the south. September and October will be warmer and drier than normal.

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, Hockessin, Newark, Wilmington), DISTRICT OF COLUMBIA (Friendship Heights, Washington), MARYLAND (Baltimore, Columbia, Dundalk, Ellicott City, Silver Spring), MASSACHUSETTS (Boston, Brockton, Cambridge, Springfield, Worcester), NEW JERSEY (Edison, Elizabeth, Jersey City, Newark, Paterson), NEW YORK (Brentwood, Hempstead, 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 2017 to October 2018

Temperature and Precipitation Graph

Reader Comments

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June 23 Newport to wedding weather?

Can you pls tell me weather forecast for June 23, 2018 in Newport, Ri for wedding?

August 12, 2018 Outdoor Wedding

Can you tell me your prediction for the weather Sunday, August 12, 2018 in the late PM (5:00 - 6:00 timeframe)? Thank you!

New HAVEN Party

What will the weather be like on June 16, 2018 for an outdoor part New Haven CT

June 10–18, 2018 weather

We are predicting scattered showers, cool for this period. The average temperature for the month is predicted to be 73°F.


What will the weather be for a party on June16 2018

Indian Summer Jersey Shore

What is the prediction for an Indian Summer on the Jersey Shore for September or October 2018?

Indian Summer, 2018

Indian summer is traditionally defined as the days between November 11 and November 20. We are predicting showers and cool temps for the first half of that period and a few shower with mild temps for the second half of it. Te average temp for the month is predicted to be 51°F.

June 2 Party

It's not looking good for June 2nd and rain. Should we have a rain plan for the party we are having??

June 1–5, 2018 weather

We are predicting sunny, hot conditions during this period. The average temperature for the month is predicted to be 73°F.

Outdoor wedding on June 10th morning.

My daughter’s wedding is a brunch wedding at 9 in the morning....hopefully outside. What is the prediction?