Sellersville, Pennsylvania climate: Normal weather by month, frost dates and records
Sellersville's normal year runs from 19°F January nights to 85°F July afternoons, with 51.7 inches of precipitation and 22 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.8°C, January lows of −7°C, July highs of 29°C, 1,313 mm of precipitation a year.
- NOAA stationSellersville
- Station IDUSC00367938
- Location40.36°N 75.31°W
- Elevation302 ft (92 m)
- From the centerunder 1 mile
- Population4,538
On October 23, the normal high in Sellersville is 62°F and the normal low 38°F, and the chance of measurable rain or snow is 34%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Sellersville.
- Jan 38° 19°
- Feb 41° 21°
- Mar 49° 28°
- Apr 62° 38°
- May 71° 48°
- Jun 80° 57°
- Jul 85° 63°
- Aug 83° 61°
- Sep 77° 54°
- Oct 64° 41°
- Nov 53° 32°
- Dec 43° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Sellersville each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 19°F. The most precipitation falls in July (5.27 in), the least in February (3.06 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 19°F | 28.4°F | 3.64 | 5.9 | 11 | <1 | 28 | 9 h 40 min |
| February | 41°F | 21°F | 30.8°F | 3.06 | 6.1 | 10 | <1 | 25 | 10 h 40 min |
| March | 49°F | 28°F | 38.4°F | 4.44 | 5.0 | 11 | <1 | 22 | 11 h 50 min |
| April | 62°F | 38°F | 49.8°F | 4.09 | 1.1 | 12 | <1 | 8 | 13 h 10 min |
| May | 71°F | 48°F | 59.9°F | 4.55 | 0.0 | 13 | 1 | 1 | 14 h 20 min |
| June | 80°F | 57°F | 68.6°F | 4.67 | 0.0 | 12 | 3 | <1 | 15 h |
| July | 85°F | 63°F | 73.9°F | 5.27 | 0.0 | 10 | 7 | <1 | 14 h 50 min |
| August | 83°F | 61°F | 72.0°F | 4.74 | 0.0 | 10 | 4 | <1 | 13 h 50 min |
| September | 77°F | 54°F | 65.1°F | 4.91 | 0.0 | 9 | 1 | <1 | 12 h 30 min |
| October | 64°F | 41°F | 52.8°F | 4.41 | 0.0 | 11 | <1 | 5 | 11 h 10 min |
| November | 53°F | 32°F | 42.7°F | 3.46 | 0.4 | 9 | <1 | 18 | 10 h |
| December | 43°F | 25°F | 33.9°F | 4.44 | 3.2 | 11 | <1 | 25 | 9 h 20 min |
| Year (annual) | 62°F | 41°F | 51.4°F | 51.68 | 21.7 | 129 | 15 | 131 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −7°C | −2.0°C | 92 mm | 15 cm |
| February | 5°C | −6°C | −0.7°C | 78 mm | 15 cm |
| March | 9°C | −2°C | 3.6°C | 113 mm | 13 cm |
| April | 16°C | 3°C | 9.9°C | 104 mm | 3 cm |
| May | 22°C | 9°C | 15.5°C | 116 mm | 0 cm |
| June | 27°C | 14°C | 20.3°C | 119 mm | 0 cm |
| July | 29°C | 17°C | 23.3°C | 134 mm | 0 cm |
| August | 28°C | 16°C | 22.2°C | 120 mm | 0 cm |
| September | 25°C | 12°C | 18.4°C | 125 mm | 0 cm |
| October | 18°C | 5°C | 11.6°C | 112 mm | 0 cm |
| November | 12°C | 0°C | 5.9°C | 88 mm | 1 cm |
| December | 6°C | −4°C | 1.1°C | 113 mm | 8 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00367938; 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.
When is the best weather to visit Sellersville?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. 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 USC00367938.
When is the last frost in Sellersville?
In Sellersville, the last spring frost (32°F) comes after April 26 in half of years and after May 12 in one year in ten; the first autumn frost comes before October 17 in half of years and before October 5 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 261 year in 10 after May 12; 9 in 10 after April 12
- First autumn frost, half of years before
- October 171 year in 10 before October 5; 9 in 10 before November 1
NOAA puts the median frost-free season at 175 days, and the season without a hard freeze (28°F) at 198 days.
A hard freeze (28°F) comes after April 13 in half of springs and before October 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Sellersville in zone 7a in ZIP code 18960, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Sellersville's NOAA station is in zone 7a: the coldest night of a typical year reaches 1°F (20 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 USC00367938; 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 in Sellersville?
In a normal year in Sellersville, 15 days a year reach 90°F, 131 nights fall to 32°F or colder and 129 days bring measurable precipitation.
- Days at 90°F or more
- 15a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 131a normal year
- Days that stay below freezing
- 20high of 32°F or less
- Days with 0.01 inch of precipitation
- 129a normal year
- Days with 1 inch of snow or more
- 6a normal year
The highest temperature in this station's record (since 1996) is 101°F, on July 23, 2011; the lowest is −11°F, on January 24, 2014.
The wettest calendar year on that record is 2011, with 68.85 in; the snowiest season is 2002–03, with 48.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00367938; records: ACIS (NOAA Regional Climate Centers), station USC00367938. Records use complete months only; a month missing more than three days is left out.
How sunny is Sellersville?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Sellersville, 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 much heating and cooling does Sellersville need?
A normal year in Sellersville brings 5,724 heating degree days, 7% more than the median U.S. place (5,373), and 786 cooling degree days, 13% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,059 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,133 | 0 |
| February | 959 | 0 |
| March | 823 | 0 |
| April | 461 | 6 |
| May | 196 | 36 |
| June | 39 | 147 |
| July | 2 | 280 |
| August | 7 | 222 |
| September | 83 | 86 |
| October | 386 | 8 |
| November | 671 | 0 |
| December | 964 | 0 |
| Year (annual) | 5,724 | 786 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00367938. 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.
Has Sellersville been warmer than normal lately?
2025 averaged 52.3°F, 0.9°F above the 1991-2020 normal of 51.4°F. 4 of the 4 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 52.7°F | +1.3°F | 49.04 | – |
| 2023 | 54.0°F | +2.6°F | 49.12 | – |
| 2024 | 54.3°F | +2.9°F | 41.18 | – |
| 2025 | 52.3°F | +0.9°F | – | – |
Source: observed years: ACIS, station USC00367938. A year counts only with all twelve months complete.
How does Sellersville's climate compare?
Sellersville is warmer than 65 of the other 107 places with their own NOAA record in Pennsylvania, and wetter than 99. Across the 7,247 U.S. stations with normals, its annual mean of 51.4°F is warmer than 47%.
In the Köppen classification computed from these normals, Sellersville is Dfa: continental, 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 Sellersville share this climate record?
13 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.
- Perkasie, PA9,338 people · 2 mi NE
- Quakertown, PA9,302 people · 6 mi N
- Souderton, PA7,274 people · 3 mi S
- Telford, PA4,977 people · 2 mi S
- Pennsburg, PA4,079 people · 10 mi W
- Hatfield, PA3,514 people · 5 mi S
- East Greenville, PA3,183 people · 11 mi W
- Red Hill, PA2,517 people · 9 mi W
- Spinnerstown, PA1,894 people · 9 mi NW
- Milford Square, PA1,274 people · 7 mi NW
- Trumbauersville, PA878 people · 5 mi NW
- Silverdale, PA801 people · 2 mi E
- Blooming Glen, PA704 people · 4 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 Sellersville's climate
What is the coldest month in Sellersville?
January, with a normal high of 38°F and a normal low of 19°F. The warmest is July (85°F by day, 63°F at night).
Does it snow in Sellersville?
Yes: 22 inches in a normal year, falling on 9 days with 0.1 inch or more, the most in February (6.1 inches).
What is the rainiest month in Sellersville?
July, with 5.27 in of precipitation in a normal year; the driest is February with 3.06 in.
What plant hardiness zone is Sellersville in?
The USDA's 2023 map puts Sellersville in zone 7a in ZIP code 18960, the nearest ZIP area. By the same method at Sellersville's NOAA station, the coldest night of a typical year reaches 1°F (20 years, 1991-2020): zone 7a.
How late can frost come in Sellersville?
In half of years the last 32°F night comes after April 26; in one year in ten it comes after May 12. Waiting until May 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
- Doylestown, PA10 miles from this station, 53.4°F a year
- Graterford (1 mi E), PA11 miles from this station, 52.4°F a year
- Bucksville, PA12 miles from this station, 51.6°F a year
- Willow Grove, PA14 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