Shamokin Dam, PA climate
Shamokin Dam has chilly winters and warm summers. A typical July afternoon reaches 85°, a January night drops to 20°, and about 29 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Shamokin Dam feels like
Winter
Spring
Summer
Fall
Shamokin Dam 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 | 36° | 20° | 3.0" | 9.7" | 12 | 12 | 18° – 36° |
| February | 39° | 22° | 2.4" | 7.6" | 10 | 11 | 18° – 38° |
| March | 48° | 29° | 3.3" | 5.6" | 11 | 6 | 32° – 49° |
| April | 62° | 38° | 3.7" | 0.6" | 12 | 0 | 45° – 55° |
| May | 72° | 48° | 3.7" | 0 | 13 | 0 | 55° – 66° |
| June | 80° | 58° | 4.1" | 0 | 12 | 0 | 66° – 72° |
| July | 85° | 62° | 4.3" | 0 | 11 | 0 | 69° – 77° |
| August | 83° | 61° | 3.8" | 0 | 11 | 0 | 68° – 75° |
| September | 76° | 53° | 4.5" | 0 | 10 | 0 | 62° – 68° |
| October | 64° | 42° | 3.9" | 0.2" | 11 | 0 | 48° – 60° |
| November | 51° | 33° | 3.0" | 1.2" | 10 | 1 | 36° – 46° |
| December | 40° | 26° | 3.2" | 4.1" | 11 | 6 | 24° – 42° |
| Year | 61° | 41° | 42.7" | 29.0" | 133 | 35 |
“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 Shamokin Dam
Shamokin Dam gets 43 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 133 days a year. Snow covers the ground about 35 days of the year.
About 178 frost-free days a year
In half of years the last 32° night comes by April 25 and the first one by October 22. That leaves about 178 frost-free days for gardens, longer than 50% of U.S. towns.
Heating and cooling a home in Shamokin Dam
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Shamokin Dam, 89% of that work is heating and 11% 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.
Shamokin Dam and its neighbors
Shamokin Dam borders 2 towns with climate data. January nights across them vary by 0.1°. Monroe has both the coldest January nights (20°) and the hottest July afternoons (84°). Shamokin Dam’s January low is 20° and its July high 85°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Shamokin Dam 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 Shamokin Dam averaged 1.2° warmer than the 1900s. The biggest change is in December (+2.7°). The shift is larger than in 52% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Shamokin Dam’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 18° to 38°. June is the most reliable, staying within 6°.
Common questions about Shamokin Dam’s climate
What is the coldest month in Shamokin Dam?
January, with a typical high of 36° and a low of 20°.
What is the hottest month in Shamokin Dam?
July, with a typical high of 85° and a low of 62°. About 17 days a year reach 90°.
How much snow does Shamokin Dam get?
About 29 inches in a normal winter, most of it in January.
When is the first frost in Shamokin Dam?
In half of years the first 32° night comes by October 22, and the last spring frost by April 25.
What is the rainiest month in Shamokin Dam?
September, with 4.5 inches of rain and melted snow. The year totals 43 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Shamokin Dam itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Selinsgrove 2 S, PA (6 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.