Pymatuning South has chilly, snowy winters and pleasant summers
A typical July afternoon reaches 82°, a January night drops to 18°, and about 62 inches of snow falls in a normal winter.
A year in Pymatuning South at a glance
Each month’s typical high and low, and what it brings.
What stands out about Pymatuning South’s climate
Read from where Pymatuning South sits among Pennsylvania’s towns. The page puts what stands out first.
62 inches of snow, 44 of rain and melt
June is the wettest month and February the driest. Rain or snow falls on about 161 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
What a year in Pymatuning South feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 161 frost-free days a year
In half of years the last 32° night comes by May 4 and the first by October 14.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Pymatuning South’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
161 frost-free days. The last frost comes by May 4 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 14.
About 62" a winter over 26 days with an inch or more, most in January. Snow covers the ground about 63 days a year.
Months averaging under 55° run from October through April. Heating is 93% of the year’s heating-and-cooling load.
About 4 days a year reach 90°, and July afternoons average 82°.
The nicest months are May, June, July, August, September and October. 2.3 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Pymatuning South and its neighbors
South Shenango has the coldest January nights next door (17°) and West Shenango the hottest July afternoons (82°). Tap a town to see its climate.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Pymatuning South averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.1°).
A bigger shift than in 85% of U.S. towns.
Change by month
How Pymatuning South compares
Against every U.S. town on TownTapestry, each counted once, with its place in Pennsylvania.
Pymatuning South 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° | 3.0" | 18.6" | 17 | 19 | 17° – 36° |
| February | 37° | 18° | 2.4" | 13.3" | 13 | 17 | 11° – 37° |
| March | 46° | 26° | 3.2" | 9.5" | 13 | 9 | 28° – 49° |
| April | 59° | 35° | 3.9" | 1.6" | 14 | 1 | 41° – 53° |
| May | 70° | 46° | 3.9" | 0 | 14 | 0 | 51° – 65° |
| June | 78° | 55° | 4.8" | 0 | 13 | 0 | 61° – 70° |
| July | 82° | 59° | 4.4" | 0 | 13 | 0 | 66° – 74° |
| August | 80° | 57° | 3.8" | 0 | 11 | 0 | 65° – 73° |
| September | 74° | 51° | 4.1" | 0 | 11 | 0 | 59° – 67° |
| October | 62° | 41° | 3.7" | 0.1" | 14 | 0 | 47° – 58° |
| November | 49° | 32° | 3.3" | 5.0" | 14 | 3 | 34° – 47° |
| December | 38° | 24° | 3.3" | 13.4" | 16 | 13 | 21° – 42° |
| Year | 59° | 38° | 43.7" | 61.5" | 161 | 63 |
Heating and cooling a home in Pymatuning South
93% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 11° to 37°. September is the most reliable, staying within 8°.
Common questions about Pymatuning South’s climate
What is the coldest month in Pymatuning South?
January, with a typical high of 34° and a low of 18°.
What is the hottest month in Pymatuning South?
July, with a typical high of 82° and a low of 59°. About 4 days a year reach 90°.
How much snow does Pymatuning South get?
About 62 inches in a normal winter, most of it in January.
When is the first frost in Pymatuning South?
In half of years the first 32° night comes by October 14, and the last spring frost by May 4.
What is the rainiest month in Pymatuning South?
June, with 4.8 inches of rain and melted snow. The year totals 44 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Pymatuning South.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Pymatuning South itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Jamestown 2 Nw, PA (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.