Stewartstown, PA climate
Stewartstown has chilly winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 21°, and about 29 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Stewartstown feels like
Winter
Spring
Summer
Fall
Stewartstown 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 | 39° | 21° | 3.3" | 8.7" | 9 | 8 | 21° – 38° |
| February | 42° | 23° | 2.8" | 9.9" | 8 | 9 | 21° – 41° |
| March | 50° | 30° | 4.1" | 4.3" | 10 | 4 | 35° – 50° |
| April | 63° | 40° | 3.7" | 0.5" | 10 | 0 | 47° – 57° |
| May | 72° | 50° | 4.0" | 0 | 11 | 0 | 57° – 67° |
| June | 80° | 59° | 4.3" | 0 | 10 | 0 | 66° – 73° |
| July | 84° | 64° | 4.7" | 0 | 10 | 0 | 69° – 78° |
| August | 82° | 62° | 4.0" | 0 | 8 | 0 | 68° – 75° |
| September | 76° | 55° | 5.0" | 0 | 8 | 0 | 63° – 69° |
| October | 65° | 44° | 4.2" | 0.3" | 8 | 0 | 50° – 61° |
| November | 53° | 34° | 3.4" | 0.7" | 8 | 1 | 37° – 49° |
| December | 43° | 26° | 3.7" | 4.4" | 9 | 4 | 26° – 45° |
| Year | 62° | 43° | 47.4" | 28.8" | 109 | 25 |
“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 Stewartstown
Stewartstown gets 47 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 109 days a year. Snow covers the ground about 25 days of the year.
About 188 frost-free days a year
In half of years the last 32° night comes by April 19 and the first one by October 25. That leaves about 188 frost-free days for gardens, longer than 62% of U.S. towns.
Heating and cooling a home in Stewartstown
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Stewartstown, 84% of that work is heating and 16% 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.