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Climate in Summit · NOAA 1991–2020 normals

Summit has chilly, snowy winters and pleasant summers

A typical July afternoon reaches 80°, a January night drops to 18°, and about 46 inches of snow falls in a normal winter.

A year in Summit at a glance

Each month’s typical high and low, and what it brings.

Jan34°18° 13" snow
Feb38°19° 11" snow
Mar47°25° 10" snow
Apr60°35°
May69°45° Nice outLast frost ~12
Jun76°53° Nice out
Jul80°58° Nice outWarmest
Aug78°56° Nice out
Sep72°49° Nice out
Oct now61°38° First frost ~5
Nov49°30°
Dec39°23° 7" snow

What stands out about Summit’s climate

Read from where Summit sits among Pennsylvania’s towns. The page puts what stands out first.

★ What stands out · A normal year

What a year in Summit feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
37° / 20°
16 days with 1"+ of snow
Spring
59° / 35°
Last frost around May 12
Summer
78° / 56°
90° days are rare
Fall
61° / 39°
First frost around Oct 5
Best months to be outsideMayJunJulAugSepHighs of 62–84° and lows of 40° or more
Living here

Living with Summit’s climate

What the numbers mean for a garden, a driveway, a furnace and a free afternoon.

The garden window

146 frost-free days. The last frost comes by May 12 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 5.

Snow season

About 46" a winter over 16 days with an inch or more, most in January. Snow covers the ground about 58 days a year.

Furnace season

Months averaging under 55° run from October through April. Heating is 96% of the year’s heating-and-cooling load.

Summer heat

90° days are rare: July afternoons average 80°.

Get outside

The nicest months are May, June, July, August and September. 17 miles of trails are waiting.

Parks & trails →
Storms and extremes

Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.

Natural hazards →
Rain & snow

46 inches of snow, 45 of rain and melt

May is the wettest month and November the driest. Rain or snow falls on about 160 days a year.

45"
Rain + melted snow a year
1521st wettest of 3,547 Pennsylvania towns
More than 70% of U.S. towns
46"
Snow in a normal winter
889th snowiest of 3,541 Pennsylvania towns
More than 77% of U.S. towns
58 days
With 1"+ of snow on the ground
685th snowiest of 3,014 Pennsylvania towns
More than 71% of U.S. towns

Rain + melted snow by month

Inches of water

4.7"
JFMAMJJASOND

Snowfall by month

Inches of snow

13"
JFMAMJJASOND
Frost & heat

About 146 frost-free days a year

In half of years the last 32° night comes by May 12 and the first by October 5.

156
nights at or below 32° in a normal year
8
nights below 0° in a normal year
<1
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

28
JFMAMJJASOND
Next door

Summit and its neighbors

Elk Lick has the coldest January nights next door (17°) and Black the hottest July afternoons (80°). Tap a town to see its climate.

Milford: January low 18°, July high 80°Addison: January low 18°, July high 79°Upper Turkeyfoot: January low 18°, July high 80°Somerset: January low 17°, July high 79°Rockwood: January low 18°, July high 80°Casselman: January low 18°, July high 80°Callimont: January low 18°, July high 79°Southampton: January low 20°, July high 83°Northampton: January low 18°, July high 79°Allegheny: January low 18°, July high 81°Stonycreek: January low 17°, July high 79°Black: January low 18°, July high 80°Elk Lick: January low 17°, July high 78°Larimer: January low 18°, July high 78°Brothersvalley: January low 18°, July high 80°Greenville: January low 18°, July high 78°Summit: January low 18°, July high 80° SummitBlackElk LickLarimerBrothersvalleyGreenville
ColderMilder17° to 20°
Elk Lick17.4° −0.7°
Larimer17.7° −0.4°
Brothersvalley17.7° −0.4°
Greenville17.7° −0.4°
Summit18.1°
Black18.1° same

Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.

Then and now

Warmer than it used to be

The last 30 years in Summit averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.3°).

+1.2°1991–2020 vs. 1901–2000

A smaller shift than in 52% of U.S. towns.

❄️ Winter+1.7°now 29°, was 27°
🌷 Spring+1.3°now 47°, was 46°
☀️ Summer+0.9°now 67°, was 66°
🍂 Fall+0.9°now 50°, was 49°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec
Compared with other towns

How Summit compares

Against every U.S. town on TownTapestry, each counted once, with its place in Pennsylvania.

Summer heat80° July high
Cooler than 90% of U.S. towns253rd coolest of 3,547 Pennsylvania towns
Winter cold18° January low
Colder than 56% of U.S. towns1146th coldest of 3,547 Pennsylvania towns
Precipitation45" a year
Wetter than 70% of U.S. towns1521st wettest of 3,547 Pennsylvania towns
Snow46" a winter
Snowier than 77% of U.S. towns889th snowiest of 3,541 Pennsylvania towns
Growing season146 frost-free days
Shorter than 84% of U.S. towns287th shortest of 3,547 Pennsylvania towns
Month by month

Summit weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January34°18°3.5" 12.9"171818° – 35°
February38°19°3.1" 11.4"141617° – 38°
March47°25°3.8" 9.9"141030° – 47°
April60°35°3.8" 1.1"14142° – 53°
May69°45°4.7" 015051° – 64°
June76°53°4.5" 014061° – 68°
July80°58°4.4" 013064° – 72°
August78°56°4.1" 012063° – 71°
September72°49°3.8" 011057° – 65°
October61°38°3.2" 0.7"11047° – 55°
November49°30°3.0" 2.8"12333° – 44°
December39°23°3.6" 6.9"151120° – 42°
Year59°37°45.3"45.7"16058
Heating & cooling

Heating and cooling a home in Summit

96% of the work is heating, so the furnace matters far more than the air conditioner.

96%heating
6,807 heating degree daysMore heating than 70% of U.S. towns
304 cooling degree daysLess cooling than 91% of U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.

Year to year

How much a month can swing

A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 20° to 42°. June is the most reliable, staying within 7°.

Coldest to warmest month in 30 yearsNormal

Common questions about Summit’s climate

What is the coldest month in Summit?

January, with a typical high of 34° and a low of 18°.

What is the hottest month in Summit?

July, with a typical high of 80° and a low of 58°.

How much snow does Summit get?

About 46 inches in a normal winter, most of it in January.

When is the first frost in Summit?

In half of years the first 32° night comes by October 5, and the last spring frost by May 12.

What is the rainiest month in Summit?

May, with 4.7 inches of rain and melted snow. The year totals 45 inches.

Neighbors talk weather

Gardens, snow, and the best days of the year in Summit.

Town Square →
Weigh in
Are Summit winters worth it?

Your answer becomes a post in Town Square.

Ask your neighbors

Temperatures and rainfall come from NOAA’s gridded climate normals for Summit itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Meyersdale 2 Ssw, PA (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.

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