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Weather in Upper Merion Township, PA · National Weather Service + NOAA

Upper Merion Township has milder winters than most of Pennsylvania

Upper Merion Township has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 87°, a January night drops to 23°, and about 8 inches of snow falls in a normal winter. In November, a normal day reaches 55° and a normal night drops to 36°.

Winter 43°/25°Spring 63°/42°Summer 85°/64°Fall 66°/46°
Right now
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Sunrise 6:32 am · sunset 4:58 pm

Getting the latest forecast from the National Weather Service…

What stands out about Upper Merion Township’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Milder winters than most of PennsylvaniaJanuary nights average 23°, milder than 3,401 of 3,547 Pennsylvania towns.Warmer summers than most of PennsylvaniaJuly afternoons average 87°, warmer than 3,487 of 3,547 Pennsylvania towns.Warming faster than mostThe last 30 years averaged 2.0° warmer than the 1900s, a bigger shift than 94% of U.S. towns.Less snow than most of PennsylvaniaAbout 8 inches a winter, less than 3,392 of 3,514 Pennsylvania towns.
A normal year

Where today sits in Upper Merion Township’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
43° / 25°
3 days with an inch or more of snow
Spring
63° / 42°
Last frost around Apr 8
Summer
85° / 64°
39 days reach 90° in a normal year
Fall now
66° / 46°
First frost around Oct 31
Pastthe usual first frost (Oct 31). Last frost next spring: Apr 8
Best months to be outside
AprMayJunSepOct
Highs of 62–84° and lows of 40° or more
How much snow does Upper Merion Township get?About 8 inches a winter.When is it wettest?July, with 4.7 inches.Is it warmer than it used to be?+2.0° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Upper Merion Township.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Upper Merion Township itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Conshohocken, PA (3 mi, snow) and Norristown, PA (3 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.