Mount Carbon, PA climate
Mount Carbon has chilly winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 84°, a January night drops to 19°, and about 21 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Mount Carbon feels like
Winter
Spring
Summer
Fall
Mount Carbon 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° | 19° | 3.6" | 5.1" | 11 | 10 | 18° – 36° |
| February | 39° | 21° | 2.9" | 7.1" | 9 | 11 | 17° – 37° |
| March | 47° | 27° | 3.9" | 4.6" | 10 | 4 | 30° – 46° |
| April | 61° | 37° | 4.2" | 0.3" | 12 | 0 | 45° – 54° |
| May | 71° | 48° | 4.3" | 0 | 14 | 0 | 54° – 65° |
| June | 79° | 57° | 4.6" | 0 | 12 | 0 | 65° – 71° |
| July | 84° | 62° | 5.0" | 0 | 11 | 0 | 68° – 77° |
| August | 82° | 60° | 4.7" | 0 | 11 | 0 | 66° – 74° |
| September | 75° | 52° | 5.0" | 0 | 10 | 0 | 60° – 67° |
| October | 63° | 41° | 4.8" | 0 | 11 | 0 | 47° – 59° |
| November | 51° | 32° | 3.7" | 0.5" | 9 | 0 | 36° – 46° |
| December | 40° | 25° | 4.1" | 3.7" | 11 | 4 | 25° – 43° |
| Year | 60° | 40° | 50.7" | 21.3" | 133 | 29 |
“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 Mount Carbon
Mount Carbon gets 51 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 133 days a year. Snow covers the ground about 29 days of the year.
About 189 frost-free days a year
In half of years the last 32° night comes by April 16 and the first one by October 25. That leaves about 189 frost-free days for gardens, longer than 63% of U.S. towns.
Heating and cooling a home in Mount Carbon
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Mount Carbon, 86% of that work is heating and 14% 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.
Mount Carbon and its neighbors
Mount Carbon borders 2 towns with climate data. January nights across them vary by 0.0°. North Manheim has both the coldest January nights (19°) and the hottest July afternoons (84°). Mount Carbon’s January low is 19° and its July high 84°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Mount Carbon 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 Mount Carbon averaged 1.4° warmer than the 1900s. The biggest change is in December (+3.1°). The shift is larger than in 65% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Mount Carbon’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 17° to 37°. June is the most reliable, staying within 6°.
Common questions about Mount Carbon’s climate
What is the coldest month in Mount Carbon?
January, with a typical high of 35° and a low of 19°.
What is the hottest month in Mount Carbon?
July, with a typical high of 84° and a low of 62°. About 17 days a year reach 90°.
How much snow does Mount Carbon get?
About 21 inches in a normal winter, most of it in February.
When is the first frost in Mount Carbon?
In half of years the first 32° night comes by October 25, and the last spring frost by April 16.
What is the rainiest month in Mount Carbon?
July, with 5.0 inches of rain and melted snow. The year totals 51 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Mount Carbon itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Hamburg, PA (13 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.