Coolspring, PA climate
Coolspring has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 82°, a January night drops to 18°, and about 54 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Coolspring feels like
Winter
Spring
Summer
Fall
Coolspring 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 | 34° | 18° | 3.1" | 17.9" | 18 | 19 | 17° – 36° |
| February | 37° | 19° | 2.4" | 11.5" | 15 | 16 | 13° – 37° |
| March | 47° | 27° | 3.2" | 8.9" | 14 | 8 | 29° – 49° |
| April | 60° | 36° | 4.0" | 1.1" | 14 | 1 | 42° – 54° |
| May | 71° | 46° | 4.1" | 0 | 15 | 0 | 51° – 65° |
| June | 79° | 55° | 4.7" | 0 | 14 | 0 | 62° – 70° |
| July | 82° | 59° | 4.8" | 0 | 12 | 0 | 66° – 74° |
| August | 81° | 58° | 3.9" | 0 | 12 | 0 | 65° – 74° |
| September | 74° | 51° | 4.0" | 0 | 11 | 0 | 59° – 67° |
| October | 62° | 41° | 3.5" | 0 | 15 | 0 | 47° – 58° |
| November | 50° | 32° | 3.2" | 2.6" | 14 | 2 | 34° – 46° |
| December | 39° | 24° | 3.3" | 11.7" | 17 | 10 | 21° – 42° |
| Year | 60° | 39° | 44.2" | 53.7" | 170 | 56 |
“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 Coolspring
Coolspring gets 44 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 170 days a year. Snow covers the ground about 56 days of the year.
About 140 frost-free days a year
In half of years the last 32° night comes by May 15 and the first one by October 3. That leaves about 140 frost-free days for gardens, shorter than 89% of U.S. towns.
Heating and cooling a home in Coolspring
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Coolspring, 93% of that work is heating and 7% 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.
Coolspring and its neighbors
Coolspring borders 7 towns with climate data. January nights across them vary by 0.8°. Fairview has the coldest January nights (17°) and Jefferson the hottest July afternoons (83°). Coolspring’s January low is 18° and its July high 82°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Coolspring 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 Coolspring averaged 1.7° warmer than the 1900s. The biggest change is in December (+2.9°). The shift is larger than in 82% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Coolspring’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 13° to 37°. June is the most reliable, staying within 8°.
Common questions about Coolspring’s climate
What is the coldest month in Coolspring?
January, with a typical high of 34° and a low of 18°.
What is the hottest month in Coolspring?
July, with a typical high of 82° and a low of 59°. About 6 days a year reach 90°.
How much snow does Coolspring get?
About 54 inches in a normal winter, most of it in January.
When is the first frost in Coolspring?
In half of years the first 32° night comes by October 3, and the last spring frost by May 15.
What is the rainiest month in Coolspring?
July, with 4.8 inches of rain and melted snow. The year totals 44 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Coolspring itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Franklin, PA (22 mi, snow) and Mercer, PA (4 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.