Allison, PA climate
Allison has chilly winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 19°, and about 30 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Allison feels like
Winter
Spring
Summer
Fall
Allison 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° | 19° | 2.8" | 7.5" | 12 | 12 | 19° – 36° |
| February | 40° | 20° | 2.2" | 7.9" | 10 | 12 | 17° – 38° |
| March | 49° | 27° | 3.1" | 6.2" | 11 | 6 | 31° – 49° |
| April | 63° | 37° | 3.4" | 0.6" | 12 | 0 | 45° – 56° |
| May | 74° | 47° | 4.0" | 0 | 13 | 0 | 55° – 66° |
| June | 82° | 56° | 3.8" | 0 | 12 | 0 | 65° – 72° |
| July | 86° | 61° | 4.1" | 0 | 11 | 0 | 69° – 78° |
| August | 84° | 59° | 3.7" | 0 | 11 | 0 | 67° – 76° |
| September | 77° | 53° | 4.1" | 0 | 11 | 0 | 62° – 69° |
| October | 64° | 41° | 3.6" | 0.1" | 11 | 0 | 48° – 59° |
| November | 51° | 32° | 3.0" | 1.4" | 11 | 1 | 36° – 46° |
| December | 40° | 25° | 2.9" | 5.9" | 12 | 6 | 24° – 42° |
| Year | 62° | 40° | 40.5" | 29.6" | 136 | 37 |
“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 Allison
Allison gets 40 inches of rain and melted snow a year. September is the wettest month and February the driest. Rain or snow falls on about 136 days a year. Snow covers the ground about 37 days of the year.
About 173 frost-free days a year
In half of years the last 32° night comes by April 30 and the first one by October 20. That leaves about 173 frost-free days for gardens, shorter than 57% of U.S. towns.
Heating and cooling a home in Allison
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Allison, 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.
Allison and its neighbors
Allison borders 4 towns with climate data. January nights across them vary by 1.2°. Woodward has the coldest January nights (18°) and Flemington the hottest July afternoons (86°). Allison’s January low is 19° and its July high 86°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Allison 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 Allison averaged 0.9° warmer than the 1900s. The biggest change is in December (+2.5°). The shift is smaller than in 75% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Allison’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 17° to 38°. June is the most reliable, staying within 7°.
Common questions about Allison’s climate
What is the coldest month in Allison?
January, with a typical high of 36° and a low of 19°.
What is the hottest month in Allison?
July, with a typical high of 86° and a low of 61°. About 18 days a year reach 90°.
How much snow does Allison get?
About 30 inches in a normal winter, most of it in February.
When is the first frost in Allison?
In half of years the first 32° night comes by October 20, and the last spring frost by April 30.
What is the rainiest month in Allison?
September, with 4.1 inches of rain and melted snow. The year totals 40 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Allison itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Lock Haven Sewage Plt, PA (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.