South Mahoning, PA climate
South Mahoning has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 82°, a January night drops to 18°, and about 42 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in South Mahoning feels like
Winter
Spring
Summer
Fall
South Mahoning 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° | 3.5" | 13.3" | 13 | 17 | 18° – 36° |
| February | 38° | 19° | 2.7" | 10.2" | 11 | 14 | 15° – 37° |
| March | 48° | 26° | 3.6" | 7.5" | 11 | 7 | 31° – 47° |
| April | 61° | 36° | 4.0" | 0.6" | 12 | 0 | 43° – 54° |
| May | 71° | 46° | 4.1" | 0 | 12 | 0 | 52° – 65° |
| June | 79° | 55° | 4.7" | 0 | 11 | 0 | 62° – 69° |
| July | 82° | 59° | 4.8" | 0 | 11 | 0 | 65° – 74° |
| August | 81° | 57° | 4.1" | 0 | 10 | 0 | 65° – 73° |
| September | 74° | 51° | 4.2" | 0 | 9 | 0 | 59° – 67° |
| October | 62° | 40° | 3.4" | 0.1" | 10 | 0 | 47° – 57° |
| November | 50° | 31° | 3.5" | 2.2" | 10 | 2 | 35° – 46° |
| December | 39° | 24° | 3.5" | 8.3" | 12 | 10 | 22° – 42° |
| Year | 60° | 38° | 46.1" | 42.2" | 131 | 50 |
“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 South Mahoning
South Mahoning 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 131 days a year. Snow covers the ground about 50 days of the year.
About 155 frost-free days a year
In half of years the last 32° night comes by May 10 and the first one by October 12. That leaves about 155 frost-free days for gardens, shorter than 76% of U.S. towns.
Heating and cooling a home in South Mahoning
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In South Mahoning, 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.
South Mahoning and its neighbors
South Mahoning borders 4 towns with climate data. January nights across them vary by 1.0°. East Mahoning has the coldest January nights (18°) and Washington the hottest July afternoons (83°). South Mahoning’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 South Mahoning 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 South Mahoning averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.4°). The shift is smaller than in 57% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at South Mahoning’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 15° to 37°. June is the most reliable, staying within 7°.
Common questions about South Mahoning’s climate
What is the coldest month in South Mahoning?
January, with a typical high of 35° and a low of 18°.
What is the hottest month in South Mahoning?
July, with a typical high of 82° and a low of 59°. About 7 days a year reach 90°.
How much snow does South Mahoning get?
About 42 inches in a normal winter, most of it in January.
When is the first frost in South Mahoning?
In half of years the first 32° night comes by October 12, and the last spring frost by May 10.
What is the rainiest month in South Mahoning?
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 South Mahoning itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Sagamore, PA (5 mi, snow) and Putneyville 2 Se Dam, PA (10 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.