Phila Franklin Inst, Pennsylvania climate: Climate normals at a NOAA weather station
Phila Franklin Inst's normal year runs from 28°F January nights to 89°F July afternoons, with 50.7 inches of precipitation and 16 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.3°C, January lows of −2°C, July highs of 32°C, 1,288 mm of precipitation a year.
- NOAA stationPhila Franklin Inst
- Station IDUSC00366886
- Location39.96°N 75.17°W
- Elevation60 ft (18 m)
On October 23, the normal high in Phila Franklin Inst is 65°F and the normal low 48°F, and the chance of measurable rain or snow is 29%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Phila Franklin Inst.
- Jan 42° 28°
- Feb 45° 30°
- Mar 54° 36°
- Apr 66° 46°
- May 76° 56°
- Jun 85° 66°
- Jul 89° 71°
- Aug 87° 70°
- Sep 80° 63°
- Oct 68° 51°
- Nov 56° 41°
- Dec 47° 33°
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 Phila Franklin Inst each month?
July is the warmest month, with normal highs of 89°F; January the coldest, with normal lows of 28°F. The most precipitation falls in August (4.95 in), the least in February (3.34 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 42°F | 28°F | 34.7°F | 3.61 | 6.4 | 11 | <1 | 20 | 9 h 40 min |
| February | 45°F | 30°F | 37.2°F | 3.34 | 4.0 | 9 | <1 | 16 | 10 h 40 min |
| March | 54°F | 36°F | 44.9°F | 4.54 | 2.0 | 10 | <1 | 9 | 11 h 50 min |
| April | 66°F | 46°F | 56.1°F | 4.00 | 0.1 | 12 | 1 | 1 | 13 h 10 min |
| May | 76°F | 56°F | 66.0°F | 4.06 | 0.0 | 12 | 2 | <1 | 14 h 20 min |
| June | 85°F | 66°F | 75.4°F | 4.77 | 0.0 | 11 | 8 | <1 | 15 h |
| July | 89°F | 71°F | 80.4°F | 4.75 | 0.0 | 10 | 15 | <1 | 14 h 50 min |
| August | 87°F | 70°F | 78.3°F | 4.95 | 0.0 | 10 | 11 | <1 | 13 h 50 min |
| September | 80°F | 63°F | 71.5°F | 4.88 | 0.0 | 9 | 3 | <1 | 12 h 30 min |
| October | 68°F | 51°F | 59.6°F | 4.15 | 0.0 | 9 | <1 | <1 | 11 h 10 min |
| November | 56°F | 41°F | 48.9°F | 3.37 | 0.1 | 9 | <1 | 3 | 10 h |
| December | 47°F | 33°F | 39.9°F | 4.27 | 3.5 | 11 | <1 | 13 | 9 h 20 min |
| Year (annual) | 66°F | 49°F | 57.7°F | 50.69 | 16.1 | 122 | 40 | 62 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 5°C | −2°C | 1.5°C | 92 mm | 16 cm |
| February | 7°C | −1°C | 2.9°C | 85 mm | 10 cm |
| March | 12°C | 2°C | 7.2°C | 115 mm | 5 cm |
| April | 19°C | 8°C | 13.4°C | 102 mm | 0 cm |
| May | 24°C | 13°C | 18.9°C | 103 mm | 0 cm |
| June | 29°C | 19°C | 24.1°C | 121 mm | 0 cm |
| July | 32°C | 22°C | 26.9°C | 121 mm | 0 cm |
| August | 31°C | 21°C | 25.7°C | 126 mm | 0 cm |
| September | 27°C | 17°C | 21.9°C | 124 mm | 0 cm |
| October | 20°C | 11°C | 15.3°C | 105 mm | 0 cm |
| November | 14°C | 5°C | 9.4°C | 86 mm | 0 cm |
| December | 8°C | 1°C | 4.4°C | 108 mm | 9 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00366886; 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 Phila Franklin Inst?
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 USC00366886.
When is the last frost at Phila Franklin Inst?
In Phila Franklin Inst, the last spring frost (32°F) comes after March 30 in half of years and after April 12 in one year in ten; the first autumn frost comes before November 17 in half of years and before November 4 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
- March 301 year in 10 after April 12; 9 in 10 after March 15
- First autumn frost, half of years before
- November 171 year in 10 before November 4; 9 in 10 before December 4
NOAA puts the median frost-free season at 232 days, and the season without a hard freeze (28°F) at 257 days.
A hard freeze (28°F) comes after March 17 in half of springs and before November 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Phila Franklin Inst in zone 7b in ZIP code 19103, 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 9°F (24 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 USC00366886; 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 Phila Franklin Inst?
In a normal year in Phila Franklin Inst, 40 days a year reach 90°F (2 of them 100°F or more), 62 nights fall to 32°F or colder and 122 days bring measurable precipitation.
- Days at 90°F or more
- 40a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 62a normal year
- Days that stay below freezing
- 12high of 32°F or less
- Days with 0.01 inch of precipitation
- 122a normal year
- Days with 1 inch of snow or more
- 4a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00366886.
How sunny is it at Phila Franklin Inst?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds at Phila Franklin Inst, 4.1 kWh per square metre a day. July is the sunniest month (82%) and December the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 68% | 2.0 |
| February | 71% | 2.9 |
| March | 69% | 3.8 |
| April | 73% | 5.0 |
| May | 72% | 5.6 |
| June | 78% | 6.2 |
| July | 82% | 6.2 |
| August | 80% | 5.4 |
| September | 77% | 4.4 |
| October | 73% | 3.2 |
| November | 74% | 2.3 |
| December | 68% | 1.8 |
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 Phila Franklin Inst record?
A normal year at Phila Franklin Inst brings 4,212 heating degree days, 22% fewer than the median U.S. place (5,373), and 1,603 cooling degree days, 77% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,429 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 939 | 0 |
| February | 777 | 0 |
| March | 624 | 3 |
| April | 293 | 26 |
| May | 81 | 112 |
| June | 7 | 319 |
| July | 0 | 476 |
| August | 1 | 414 |
| September | 21 | 216 |
| October | 204 | 36 |
| November | 486 | 1 |
| December | 780 | 0 |
| Year (annual) | 4,212 | 1,603 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00366886. 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 Phila Franklin Inst been warmer than normal?
2025 averaged 57.9°F, 0.2°F above the 1991-2020 normal of 57.7°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 59.3°F | +1.6°F | – | – |
| 2022 | 58.6°F | +0.9°F | – | – |
| 2023 | 59.6°F | +1.9°F | – | – |
| 2024 | 60.0°F | +2.3°F | – | – |
| 2025 | 57.9°F | +0.2°F | – | – |
Source: observed years: ACIS, station USC00366886. A year counts only with all twelve months complete.
How does Phila Franklin Inst's climate compare?
Phila Franklin Inst is warmer than 108 of the 108 places with their own NOAA record in Pennsylvania, and wetter than 97. Across the 7,247 U.S. stations with normals, its annual mean of 57.7°F is warmer than 68%.
In the Köppen classification computed from these normals, Phila Franklin Inst 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 Phila Franklin Inst share this climate record?
27 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.
- Camden, NJalso near: Pennsauken (1 mi N) (5 mi, 54.8°F a year); Moorestown-Lenola (7 mi, 55.8°F a year)71,749 people · 4 mi SE
- Springdale, NJ15,672 people · 12 mi SE
- Cherry Hill Mall, NJ14,827 people · 9 mi E
- Collingswood, NJ14,344 people · 6 mi SE
- Westmont, NJ13,870 people · 7 mi SE
- Echelon, NJ13,577 people · 12 mi SE
- Haddonfield, NJ12,707 people · 9 mi SE
- Gloucester City, NJ11,618 people · 5 mi SE
- Greentree, NJ11,024 people · 12 mi E
- Ashland, NJ9,437 people · 10 mi SE
- Audubon, NJ8,801 people · 7 mi SE
- Haddon Heights, NJ7,588 people · 8 mi SE
- Barrington, NJ7,140 people · 9 mi SE
- Kingston Estates, NJ6,250 people · 10 mi E
- Somerdale, NJ5,712 people · 11 mi SE
- Ellisburg, NJ5,021 people · 9 mi E
- Golden Triangle, NJ4,893 people · 7 mi E
- Mount Ephraim, NJ4,700 people · 7 mi SE
- Barclay, NJ4,456 people · 10 mi SE
- Magnolia, NJ4,396 people · 10 mi SE
- Merchantville, NJ4,226 people · 7 mi E
- Oaklyn, NJ3,979 people · 6 mi SE
- Lawnside, NJ3,333 people · 10 mi SE
- Woodlynne, NJ2,941 people · 5 mi SE
- Gibbsboro, NJ2,264 people · 14 mi SE
- Audubon Park, NJ1,000 people · 6 mi SE
- Tavistock, NJ2 people · 9 mi SE
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 Phila Franklin Inst's climate
What is the coldest month at Phila Franklin Inst?
January, with a normal high of 42°F and a normal low of 28°F. The warmest is July (89°F by day, 71°F at night).
Does it snow at Phila Franklin Inst?
Yes: 16 inches in a normal year, falling on 8 days with 0.1 inch or more, the most in January (6.4 inches).
What is the rainiest month at Phila Franklin Inst?
August, with 4.95 in of precipitation in a normal year; the driest is February with 3.34 in.
What plant hardiness zone is Phila Franklin Inst in?
The USDA's 2023 map puts Phila Franklin Inst in zone 7b in ZIP code 19103, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 9°F (24 years, 1991-2020): zone 7b.
How late can frost come at Phila Franklin Inst?
In half of years the last 32°F night comes after March 30; in one year in ten it comes after April 12. Waiting until April 12 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Pennsylvania climateThe statewide normals and every place in the state
- Philadelphia, PA7 miles from this station, 56.3°F a year
- Pennsauken (1 mi N), NJ8 miles from this station, 54.8°F a year
- Moorestown-Lenola, NJ11 miles from this station, 55.8°F a year
- Philadelphia NE Airport, PA12 miles from this station, 56.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made