Big Run, PA climate
Big Run has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 82°, a January night drops to 17°, and about 35 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Big Run feels like
Winter
Spring
Summer
Fall
Big Run 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 | 30-yr range |
|---|---|---|---|---|---|---|
| January | 34° | 17° | 3.1" | 12.4" | 15 | 17° – 35° |
| February | 37° | 18° | 2.6" | 5.1" | 12 | 14° – 36° |
| March | 47° | 25° | 3.4" | 5.9" | 13 | 30° – 47° |
| April | 60° | 35° | 3.9" | 0.3" | 14 | 42° – 53° |
| May | 70° | 45° | 4.0" | 0 | 14 | 51° – 64° |
| June | 78° | 54° | 4.3" | 0 | 13 | 62° – 68° |
| July | 82° | 58° | 4.5" | 0 | 12 | 65° – 74° |
| August | 80° | 56° | 4.0" | 0 | 11 | 64° – 73° |
| September | 73° | 50° | 4.0" | 0 | 10 | 58° – 67° |
| October | 62° | 39° | 3.5" | 0 | 11 | 46° – 57° |
| November | 49° | 30° | 3.4" | 1.7" | 12 | 34° – 46° |
| December | 38° | 23° | 3.3" | 9.1" | 14 | 21° – 42° |
| Year | 59° | 37° | 44.0" | 34.5" | 149 |
“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 Big Run
Big Run 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 149 days a year.
About 160 frost-free days a year
In half of years the last 32° night comes by May 6 and the first one by October 14. That leaves about 160 frost-free days for gardens, shorter than 71% of U.S. towns.
Heating and cooling a home in Big Run
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Big Run, 94% of that work is heating and 6% 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.
Big Run and its neighbors
Big Run borders 2 towns with climate data. January nights across them vary by 0.3°. Gaskill has the coldest January nights (17°) and Henderson the hottest July afternoons (81°). Big Run’s January low is 17° and its July high 82°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Big Run 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 Big Run averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.5°). The shift is larger than in 53% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Big Run’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 14° to 36°. June is the most reliable, staying within 7°.
Common questions about Big Run’s climate
What is the coldest month in Big Run?
January, with a typical high of 34° and a low of 17°.
What is the hottest month in Big Run?
July, with a typical high of 82° and a low of 58°. About 2 days a year reach 90°.
How much snow does Big Run get?
About 35 inches in a normal winter, most of it in January.
When is the first frost in Big Run?
In half of years the first 32° night comes by October 14, and the last spring frost by May 6.
What is the rainiest month in Big Run?
July, with 4.5 inches of rain and melted snow. The year totals 44 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Big Run itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Putneyville 2 Se Dam, PA (21 mi, snow) and Dubois Jefferson Co Airport, PA (14 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.