New Sewickley has chilly winters and pleasant summers. A typical July afternoon reaches 84°, a January night drops to 20°, and about 20 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normalsUpdated once a decade
☀️
July high
84°
1755th hottest of 3,547 Pennsylvania towns
❄️
January low
20°
1492nd mildest of 3,547 Pennsylvania towns
💧
Rain + melted snow
41 in
486th driest of 3,547 Pennsylvania towns
🌨️
Snow a winter
20 in
266th least snowy of 3,541 Pennsylvania towns
A normal year
What a year in New Sewickley feels like
❄️
Winter
39° / 23°
Typical high / low · 8 days with an inch or more of snow
🌷
Spring
61° / 39°
Typical high / low · Last frost around Apr 27
☀️
Summer
82° / 59°
Typical high / low · 10 days reach 90° in a normal year
🍂
Fall
63° / 43°
Typical high / low · First frost around Oct 25
10°
20°
40°
50°
60°
70°
80°
90°
100°
32°
36°
20°
40°
22°
49°
29°
62°
39°
72°
48°
80°
57°
84°
61°
82°
60°
76°
53°
64°
42°
51°
33°
41°
26°
JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD
32°, freezingBar runs from the typical overnight low up to the afternoon high
Best months to be outsideMayJunJulAugSepOctHighs of 62–84° and lows of 40° or more
Month by month
New Sewickley weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
Month
High
Low
Rain + melt
Snow
Wet days
Snow on ground
30-yr range
January
36°
20°
3.0"
9.1"
15
7
20° – 38°
February
40°
22°
2.4"
5.2"
13
5
17° – 39°
March
49°
29°
3.3"
2.6"
13
2
32° – 50°
April
62°
39°
3.6"
0
12
0
44° – 55°
May
72°
48°
3.8"
0
12
0
54° – 67°
June
80°
57°
4.4"
0
11
0
64° – 71°
July
84°
61°
4.2"
0
9
0
68° – 76°
August
82°
60°
3.8"
0
9
0
67° – 75°
September
76°
53°
3.8"
0
9
0
62° – 68°
October
64°
42°
3.1"
0.1"
10
0
49° – 59°
November
51°
33°
2.9"
0.3"
11
0
36° – 48°
December
41°
26°
3.1"
2.5"
13
3
23° – 43°
Year
61°
41°
41.4"
19.8"
138
17
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain & snow
Rain and snow in New Sewickley
New Sewickley gets 41 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 138 days a year. Snow covers the ground about 17 days of the year.
💧
41 in
Rain + melted snow a year
More rain than 56% of U.S. towns
❄️
20 in
Snow in a normal winter
Less snow than 58% of U.S. towns
⛄
17 days
With 1"+ of snow on the ground
Fewer than 62% of U.S. towns
Rain + melted snow by month
Inches of water
4.4"
JFMAMJJASOND
Snowfall by month
Inches of snow
9.1"
JFMAMJJASOND
Frost & the growing season
About 178 frost-free days a year
In half of years the last 32° night comes by April 27 and the first one by October 25. That leaves about 178 frost-free days for gardens, longer than 50% of U.S. towns.
🌱 Apr 27
🍂 Oct 25
178 frost-free days
JFMAMJJASOND
🥶
131
nights at or below 32° in a normal year
🧊
5
nights below 0° in a normal year
🔥
10
days that reach 90° in a normal year
Freezing nights by month
Average nights at or below 32°
JFMAMJJASOND
90° days by month
Average days at 90° or more
JFMAMJJASOND
Heating & cooling
Heating and cooling a home in New Sewickley
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In New Sewickley, 90% of that work is heating and 10% is cooling, so the furnace matters far more than the air conditioner.
🔥
5,959 heating degree daysMore heating than 55% of U.S. towns
❄️
654 cooling degree daysLess cooling than 64% of U.S. towns
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Around New Sewickley
New Sewickley and its neighbors
New Sewickley borders 9 towns with climate data. January nights across them vary by 1.2°. Jackson has the coldest January nights (20°) and Freedom the hottest July afternoons (84°). New Sewickley’s January low is 20° and its July high 84°.
Compared with every U.S. town and city on TownTapestry, each counted once.
Then and now
Warmer than it used to be
+1.3°1991–2020 average vs. the 20th century (1901–2000)
The last 30 years in New Sewickley averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.6°). The shift is larger than in 56% of U.S. towns.
❄️ Winter+2.0°now 31°, was 29°
🌷 Spring+1.4°now 50°, was 49°
☀️ Summer+0.7°now 71°, was 70°
🍂 Fall+1.1°now 53°, was 52°
Change by month1991–2020 average minus 1901–2000 average, at New Sewickley’s spot on NOAA’s grid
+0.3°
+2.6°
JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD
Year to year
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 17° to 39°. September is the most reliable, staying within 7°.
10°
20°
30°
40°
50°
60°
70°
80°
90°
JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD
Coldest to warmest month in 30 yearsNormal
Questions
Common questions about New Sewickley’s climate
What is the coldest month in New Sewickley?
January, with a typical high of 36° and a low of 20°.
What is the hottest month in New Sewickley?
July, with a typical high of 84° and a low of 61°. About 10 days a year reach 90°.
How much snow does New Sewickley get?
About 20 inches in a normal winter, most of it in January.
When is the first frost in New Sewickley?
In half of years the first 32° night comes by October 25, and the last spring frost by April 27.
What is the rainiest month in New Sewickley?
June, with 4.4 inches of rain and melted snow. The year totals 41 inches.
📍Temperatures and rainfall come from NOAA’s gridded climate normals for New Sewickley itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Glenwillard Dashields L&d, PA (12 mi, snow) and Beaver Falls 1 Ne, PA (7 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.