Exeter, PA climate
Exeter has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 22°, and about 27 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Exeter feels like
Winter
Spring
Summer
Fall
Exeter 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 | 39° | 22° | 3.3" | 7.4" | 11 | 8 | 22° – 38° |
| February | 42° | 24° | 2.5" | 9.5" | 12 | 11 | 21° – 40° |
| March | 51° | 30° | 3.7" | 5.0" | 12 | 5 | 34° – 50° |
| April | 64° | 40° | 3.5" | 0.3" | 13 | 0 | 47° – 57° |
| May | 74° | 50° | 3.7" | 0 | 14 | 0 | 57° – 67° |
| June | 82° | 59° | 4.2" | 0 | 13 | 0 | 67° – 74° |
| July | 87° | 64° | 4.8" | 0 | 12 | 0 | 71° – 79° |
| August | 85° | 62° | 4.4" | 0 | 11 | 0 | 69° – 77° |
| September | 78° | 55° | 4.7" | 0 | 10 | 0 | 64° – 71° |
| October | 66° | 43° | 4.1" | 0.3" | 12 | 0 | 49° – 62° |
| November | 54° | 34° | 3.2" | 0.8" | 10 | 1 | 39° – 49° |
| December | 44° | 27° | 3.7" | 3.9" | 12 | 5 | 27° – 47° |
| Year | 64° | 43° | 45.9" | 27.2" | 142 | 30 |
“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 Exeter
Exeter gets 46 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 142 days a year. Snow covers the ground about 30 days of the year.
About 197 frost-free days a year
In half of years the last 32° night comes by April 14 and the first one by October 29. That leaves about 197 frost-free days for gardens, longer than 70% of U.S. towns.
Heating and cooling a home in Exeter
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Exeter, 83% of that work is heating and 17% is cooling, so the furnace matters far more than the air conditioner.
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.
Exeter and its neighbors
Exeter borders 9 towns with climate data. January nights across them vary by 1.8°. Alsace has the coldest January nights (20°) and Amity the hottest July afternoons (88°). Exeter’s January low is 22° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Exeter 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 Exeter averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.4°). The shift is larger than in 85% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Exeter’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 27° to 47°. June is the most reliable, staying within 7°.
Common questions about Exeter’s climate
What is the coldest month in Exeter?
January, with a typical high of 39° and a low of 22°.
What is the hottest month in Exeter?
July, with a typical high of 87° and a low of 64°. About 24 days a year reach 90°.
How much snow does Exeter get?
About 27 inches in a normal winter, most of it in February.
When is the first frost in Exeter?
In half of years the first 32° night comes by October 29, and the last spring frost by April 14.
What is the rainiest month in Exeter?
July, with 4.8 inches of rain and melted snow. The year totals 46 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Exeter itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Reading 3.5 Sw, PA (8 mi, snow) and Reading Spaatz Fld, PA (8 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.