Casselman, PA climate
Casselman has chilly, snowy winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 80°, a January night drops to 18°, and about 96 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Casselman feels like
Winter
Spring
Summer
Fall
Casselman 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 | 35° | 18° | 4.0" | 27.6" | 19 | 21 | 18° – 36° |
| February | 38° | 20° | 3.6" | 23.6" | 16 | 19 | 17° – 38° |
| March | 47° | 26° | 4.2" | 15.4" | 16 | 10 | 31° – 47° |
| April | 60° | 36° | 4.3" | 3.1" | 16 | 2 | 43° – 54° |
| May | 70° | 45° | 5.0" | 0 | 16 | 0 | 51° – 65° |
| June | 76° | 54° | 5.1" | 0 | 15 | 0 | 61° – 67° |
| July | 80° | 58° | 4.9" | 0 | 13 | 0 | 64° – 73° |
| August | 78° | 56° | 4.4" | 0 | 13 | 0 | 63° – 72° |
| September | 72° | 49° | 4.2" | 0 | 11 | 0 | 58° – 65° |
| October | 61° | 38° | 3.5" | 0.9" | 13 | 0 | 47° – 56° |
| November | 49° | 30° | 3.5" | 5.9" | 14 | 4 | 33° – 45° |
| December | 39° | 23° | 4.1" | 19.7" | 18 | 14 | 20° – 42° |
| Year | 59° | 38° | 50.6" | 96.2" | 179 | 70 |
“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 Casselman
Casselman gets 51 inches of rain and melted snow a year. June is the wettest month and November the driest. Rain or snow falls on about 179 days a year. Snow covers the ground about 70 days of the year.
About 146 frost-free days a year
In half of years the last 32° night comes by May 12 and the first one by October 5. That leaves about 146 frost-free days for gardens, shorter than 84% of U.S. towns.
Heating and cooling a home in Casselman
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Casselman, 96% of that work is heating and 4% 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.
Casselman and its neighbors
Casselman borders 2 towns with climate data. January nights across them vary by 0.1°. Black has both the coldest January nights (18°) and the hottest July afternoons (80°). Casselman’s January low is 18° and its July high 80°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Casselman 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 Casselman averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.4°). The shift is smaller than in 70% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Casselman’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 20° to 42°. June is the most reliable, staying within 7°.
Common questions about Casselman’s climate
What is the coldest month in Casselman?
January, with a typical high of 35° and a low of 18°.
What is the hottest month in Casselman?
July, with a typical high of 80° and a low of 58°.
How much snow does Casselman get?
About 96 inches in a normal winter, most of it in January.
When is the first frost in Casselman?
In half of years the first 32° night comes by October 5, and the last spring frost by May 12.
What is the rainiest month in Casselman?
June, with 5.1 inches of rain and melted snow. The year totals 51 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Casselman itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Somerset, PA (10 mi, snow) and Meyersdale 2 Ssw, PA (12 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.