Boothwyn has chilly winters and warm summers
A typical July afternoon reaches 87°, a January night drops to 26°, and about 23 inches of snow falls in a normal winter.
A year in Boothwyn at a glance
Each month’s typical high and low, and what it brings.
What stands out about Boothwyn’s climate
Read from where Boothwyn sits among Pennsylvania’s towns. The page puts what stands out first.
What a year in Boothwyn feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 230 frost-free days a year
In half of years the last 32° night comes by March 30 and the first by November 16.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Boothwyn’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
230 frost-free days. The last frost comes by Mar 30 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 16.
About 23" a winter over 5 days with an inch or more, most in February. Snow covers the ground about 16 days a year.
Months averaging under 55° run from November through April. Heating is 75% of the year’s heating-and-cooling load.
About 27 days a year reach 90°, and July afternoons average 87°.
The nicest months are April, May, June, September and October.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Warmer than it used to be
The last 30 years in Boothwyn averaged 1.9° warmer than the 1900s. The biggest change is in December (+3.3°).
A bigger shift than in 91% of U.S. towns.
Change by month
23 inches of snow, 46 of rain and melt
September is the wettest month and February the driest. Rain or snow falls on about 121 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Boothwyn and its neighbors
Upper Chichester has the coldest January nights next door (26°) and Upper Chichester the hottest July afternoons (87°). Tap a town to see its climate.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
How Boothwyn compares
Against every U.S. town on TownTapestry, each counted once, with its place in Pennsylvania.
Boothwyn 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 | 41° | 26° | 3.3" | 7.1" | 11 | 5 | 25° – 41° |
| February | 44° | 27° | 2.8" | 8.4" | 10 | 6 | 25° – 43° |
| March | 52° | 33° | 4.1" | 3.6" | 11 | 2 | 37° – 51° |
| April | 64° | 43° | 3.7" | 0.3" | 11 | 0 | 50° – 59° |
| May | 74° | 53° | 3.5" | 0 | 11 | 0 | 59° – 69° |
| June | 83° | 62° | 4.3" | 0 | 10 | 0 | 69° – 77° |
| July | 87° | 68° | 4.5" | 0 | 10 | 0 | 73° – 81° |
| August | 85° | 66° | 4.3" | 0 | 9 | 0 | 71° – 79° |
| September | 79° | 59° | 4.7" | 0 | 9 | 0 | 66° – 73° |
| October | 67° | 47° | 3.8" | 0 | 9 | 0 | 53° – 64° |
| November | 56° | 38° | 3.2" | 0.2" | 9 | 0 | 41° – 52° |
| December | 46° | 30° | 3.9" | 3.5" | 11 | 3 | 30° – 50° |
| Year | 65° | 46° | 45.9" | 23.1" | 121 | 16 |
Heating and cooling a home in Boothwyn
75% of the work is heating.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 30° to 50°. September is the most reliable, staying within 7°.
Common questions about Boothwyn’s climate
What is the coldest month in Boothwyn?
January, with a typical high of 41° and a low of 26°.
What is the hottest month in Boothwyn?
July, with a typical high of 87° and a low of 68°. About 27 days a year reach 90°.
How much snow does Boothwyn get?
About 23 inches in a normal winter, most of it in February.
When is the first frost in Boothwyn?
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 Boothwyn?
September, with 4.7 inches of rain and melted snow. The year totals 46 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Boothwyn.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Boothwyn itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Philadelphia Intl Airport, PA (12 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. Today’s forecast: National Weather Service.