Marcus Hook, PA climate
Marcus Hook has chilly winters and warm summers. A typical July afternoon reaches 88°, a January night drops to 26°, and about 23 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Marcus Hook feels like
Winter
Spring
Summer
Fall
Marcus Hook 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 | 42° | 26° | 3.2" | 7.1" | 11 | 5 | 26° – 41° |
| February | 45° | 27° | 2.8" | 8.4" | 10 | 6 | 25° – 43° |
| March | 53° | 34° | 4.1" | 3.6" | 11 | 2 | 38° – 52° |
| April | 65° | 43° | 3.6" | 0.3" | 11 | 0 | 51° – 59° |
| May | 74° | 53° | 3.4" | 0 | 11 | 0 | 59° – 69° |
| June | 83° | 63° | 4.2" | 0 | 10 | 0 | 69° – 78° |
| July | 88° | 69° | 4.5" | 0 | 10 | 0 | 74° – 81° |
| August | 86° | 67° | 4.4" | 0 | 9 | 0 | 72° – 80° |
| September | 79° | 60° | 4.6" | 0 | 9 | 0 | 66° – 73° |
| October | 67° | 48° | 3.7" | 0 | 9 | 0 | 53° – 64° |
| November | 56° | 38° | 3.1" | 0.2" | 9 | 0 | 41° – 52° |
| December | 46° | 31° | 3.9" | 3.5" | 11 | 3 | 31° – 51° |
| Year | 65° | 47° | 45.5" | 23.1" | 121 | 16 |
“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 and snow in Marcus Hook
Marcus Hook gets 46 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 121 days a year. Snow covers the ground about 16 days of the year.
About 230 frost-free days a year
In half of years the last 32° night comes by March 30 and the first one by November 16. That leaves about 230 frost-free days for gardens, longer than 86% of U.S. towns.
Heating and cooling a home in Marcus Hook
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Marcus Hook, 75% of that work is heating and 25% is cooling.
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.
Marcus Hook and its neighbors
Marcus Hook borders 3 towns with climate data. January nights across them vary by 0.5°. Lower Chichester has the coldest January nights (26°) and Trainer the hottest July afternoons (88°). Marcus Hook’s January low is 26° and its July high 88°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Marcus Hook compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Marcus Hook averaged 1.9° warmer than the 1900s. The biggest change is in December (+3.4°). The shift is larger than in 90% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Marcus Hook’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 31° to 51°. September is the most reliable, staying within 7°.
Common questions about Marcus Hook’s climate
What is the coldest month in Marcus Hook?
January, with a typical high of 42° and a low of 26°.
What is the hottest month in Marcus Hook?
July, with a typical high of 88° and a low of 69°. About 27 days a year reach 90°.
How much snow does Marcus Hook get?
About 23 inches in a normal winter, most of it in February.
When is the first frost in Marcus Hook?
In half of years the first 32° night comes by November 16, and the last spring frost by March 30.
What is the rainiest month in Marcus Hook?
September, with 4.6 inches of rain and melted snow. The year totals 46 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Marcus Hook itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Philadelphia Intl Airport, PA (11 mi, snow) and Marcus Hook, PA (1 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.