Philadelphia NE Airport, Pennsylvania climate: Climate normals at a NOAA weather station
Philadelphia NE Airport's normal year runs from 27°F January nights to 88°F July afternoons, with 45.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.6°C, January lows of −3°C, July highs of 31°C, 1,143 mm of precipitation a year.
- NOAA stationPhiladelphia NE Airport
- Station IDUSW00094732
- Location40.08°N 75.01°W
- Elevation100 ft (31 m)
On October 23, the normal high in Philadelphia NE Airport is 65°F and the normal low 46°F, and the chance of measurable rain or snow is 31%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Philadelphia NE Airport.
- Jan 42° 27°
- Feb 45° 28°
- Mar 53° 35°
- Apr 65° 44°
- May 75° 54°
- Jun 83° 64°
- Jul 88° 69°
- Aug 86° 68°
- Sep 79° 60°
- Oct 68° 48°
- Nov 57° 38°
- Dec 47° 31°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Philadelphia NE Airport each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 27°F. The most precipitation falls in September (4.52 in), the least in February (2.57 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 42°F | 27°F | 34.2°F | 3.34 | 11 | <1 | 24 | 9 h 40 min |
| February | 45°F | 28°F | 36.5°F | 2.57 | 10 | <1 | 21 | 10 h 40 min |
| March | 53°F | 35°F | 43.9°F | 3.96 | 11 | <1 | 14 | 11 h 50 min |
| April | 65°F | 44°F | 54.7°F | 3.77 | 13 | <1 | 2 | 13 h 10 min |
| May | 75°F | 54°F | 64.3°F | 3.61 | 12 | 2 | <1 | 14 h 20 min |
| June | 83°F | 64°F | 73.6°F | 3.87 | 12 | 6 | <1 | 15 h |
| July | 88°F | 69°F | 78.8°F | 4.32 | 11 | 12 | <1 | 14 h 50 min |
| August | 86°F | 68°F | 76.9°F | 4.22 | 11 | 8 | <1 | 13 h 50 min |
| September | 79°F | 60°F | 69.8°F | 4.52 | 9 | 2 | <1 | 12 h 30 min |
| October | 68°F | 48°F | 57.9°F | 3.63 | 10 | <1 | 1 | 11 h 10 min |
| November | 57°F | 38°F | 47.5°F | 3.19 | 9 | <1 | 8 | 10 h |
| December | 47°F | 31°F | 38.9°F | 4.00 | 11 | <1 | 20 | 9 h 20 min |
| Year (annual) | 66°F | 47°F | 56.4°F | 45.00 | 130 | 29 | 88 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 5°C | −3°C | 1.2°C | 85 mm |
| February | 7°C | −2°C | 2.5°C | 65 mm |
| March | 12°C | 2°C | 6.6°C | 101 mm |
| April | 18°C | 7°C | 12.6°C | 96 mm |
| May | 24°C | 12°C | 17.9°C | 92 mm |
| June | 29°C | 18°C | 23.1°C | 98 mm |
| July | 31°C | 21°C | 26.0°C | 110 mm |
| August | 30°C | 20°C | 24.9°C | 107 mm |
| September | 26°C | 16°C | 21.0°C | 115 mm |
| October | 20°C | 9°C | 14.4°C | 92 mm |
| November | 14°C | 4°C | 8.6°C | 81 mm |
| December | 8°C | 0°C | 3.8°C | 102 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Neshaminy Falls (6 miles away), gets 20 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094732; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Philadelphia NE Airport?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, September has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094732.
When is the last frost at Philadelphia NE Airport?
In Philadelphia NE Airport, the last spring frost (32°F) comes after April 4 in half of years and after April 17 in one year in ten; the first autumn frost comes before November 7 in half of years and before October 24 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 41 year in 10 after April 17; 9 in 10 after March 21
- First autumn frost, half of years before
- November 71 year in 10 before October 24; 9 in 10 before November 22
NOAA puts the median frost-free season at 216 days, and the season without a hard freeze (28°F) at 241 days.
A hard freeze (28°F) comes after March 23 in half of springs and before November 19 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Philadelphia NE Airport in zone 7b in ZIP code 19114, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 7b: the coldest night of a typical year reaches 8°F (28 complete years).
Frost dates for every NOAA station in Pennsylvania · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00094732; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Philadelphia NE Airport?
In a normal year in Philadelphia NE Airport, 29 days a year reach 90°F, 88 nights fall to 32°F or colder and 130 days bring measurable precipitation.
- Days at 90°F or more
- 29a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 88a normal year
- Days that stay below freezing
- 13high of 32°F or less
- Days with 0.01 inch of precipitation
- 130a normal year
The highest temperature in this station's record (since 1945) is 105°F, on July 22, 2011; the lowest is −6°F, on January 17, 1982.
The wettest calendar year on that record is 2018, with 66.24 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00094732; records: ACIS (NOAA Regional Climate Centers), station USW00094732. Records use complete months only; a month missing more than three days is left out.
How humid and windy is it at Philadelphia NE Airport, and how clear are the skies?
The summer (June-August) dew point averages 63°F. The muggiest month is July, with an average dew point of 65°F; the driest air comes in January (21°F). February is the windiest month (9.4 mph on average), and August has the most clear or nearly clear hours (70%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 21°F | 61% | 48% | 8.7 mph | 59% | 28% |
| February | 25°F | 58% | 46% | 9.4 mph | 56% | 32% |
| March | 33°F | 56% | 42% | 9.4 mph | 57% | 30% |
| April | 43°F | 58% | 42% | 8.3 mph | 59% | 25% |
| May | 56°F | 64% | 48% | 7.4 mph | 62% | 20% |
| June | 63°F | 63% | 46% | 6.8 mph | 69% | 13% |
| July | 65°F | 66% | 49% | 6.3 mph | 66% | 14% |
| August | 61°F | 66% | 48% | 6.5 mph | 70% | 14% |
| September | 53°F | 70% | 51% | 6.8 mph | 65% | 21% |
| October | 40°F | 65% | 49% | 7.6 mph | 63% | 26% |
| November | 32°F | 64% | 52% | 8.0 mph | 59% | 28% |
| December | 25°F | 63% | 53% | 8.5 mph | 58% | 31% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094732. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is it at Philadelphia NE Airport?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds at Philadelphia NE Airport, 3.9 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 1.9 |
| February | 68% | 2.7 |
| March | 67% | 3.6 |
| April | 70% | 4.8 |
| May | 69% | 5.3 |
| June | 74% | 5.9 |
| July | 79% | 6.0 |
| August | 77% | 5.2 |
| September | 75% | 4.2 |
| October | 69% | 3.0 |
| November | 70% | 2.1 |
| December | 63% | 1.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Philadelphia NE Airport record?
A normal year at Philadelphia NE Airport brings 4,466 heating degree days, 17% fewer than the median U.S. place (5,373), and 1,375 cooling degree days, 51% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,064 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 955 | 0 |
| February | 798 | 0 |
| March | 655 | 1 |
| April | 328 | 19 |
| May | 106 | 84 |
| June | 10 | 268 |
| July | 0 | 428 |
| August | 1 | 369 |
| September | 32 | 176 |
| October | 248 | 28 |
| November | 526 | 1 |
| December | 808 | 0 |
| Year (annual) | 4,466 | 1,375 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094732. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Philadelphia NE Airport been warmer than normal?
2023 averaged 57.6°F, 1.2°F above the 1991-2020 normal of 56.4°F. 2 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.6°F | +0.2°F | 47.64 |
| 2023 | 57.6°F | +1.2°F | 45.19 |
Over 57 complete years from 1958 to 2023, the station's annual mean temperature rose at a fitted 6.0°F per century (+0.33°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00094732; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Philadelphia NE Airport's climate compare?
Philadelphia NE Airport is warmer than 107 of the 108 places with their own NOAA record in Pennsylvania, and wetter than 60. Across the 7,247 U.S. stations with normals, its annual mean of 56.4°F is warmer than 65%.
In the Köppen classification computed from these normals, Philadelphia NE Airport is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Philadelphia NE Airport share this climate record?
5 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Marlton, NJ10,473 people · 13 mi S
- Palmyra, NJ7,587 people · 6 mi S
- Ramblewood, NJ6,542 people · 11 mi S
- Riverton, NJ2,816 people · 5 mi S
- Beverly, NJ2,543 people · 5 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Philadelphia NE Airport's climate
What is the coldest month at Philadelphia NE Airport?
January, with a normal high of 42°F and a normal low of 27°F. The warmest is July (88°F by day, 69°F at night).
Does it snow at Philadelphia NE Airport?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Neshaminy Falls (6 miles away), records 20 inches of snow in a normal year.
What is the rainiest month at Philadelphia NE Airport?
September, with 4.52 in of precipitation in a normal year; the driest is February with 2.57 in.
What plant hardiness zone is Philadelphia NE Airport in?
The USDA's 2023 map puts Philadelphia NE Airport in zone 7b in ZIP code 19114, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 8°F (28 years, 1991-2020): zone 7b.
How late can frost come at Philadelphia NE Airport?
In half of years the last 32°F night comes after April 4; in one year in ten it comes after April 17. Waiting until April 17 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Neshaminy Falls, PA6 miles from this station, 52.9°F a year
- Pennsauken (1 mi N), NJ8 miles from this station, 54.8°F a year
- Moorestown-Lenola, NJ9 miles from this station, 55.8°F a year
- Willow Grove, PA11 miles from this station, 54.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made