Ontelaunee, PA climate
Ontelaunee has chilly winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 21°, and about 21 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Ontelaunee feels like
Winter
Spring
Summer
Fall
Ontelaunee 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° | 3.2" | 5.1" | 11 | 10 | 21° – 38° |
| February | 42° | 23° | 2.4" | 7.1" | 9 | 11 | 21° – 40° |
| March | 51° | 30° | 3.5" | 4.6" | 10 | 4 | 33° – 49° |
| April | 64° | 40° | 3.6" | 0.3" | 12 | 0 | 47° – 57° |
| May | 73° | 50° | 3.8" | 0 | 14 | 0 | 57° – 67° |
| June | 82° | 59° | 4.5" | 0 | 12 | 0 | 67° – 74° |
| July | 87° | 64° | 4.8" | 0 | 11 | 0 | 71° – 79° |
| August | 85° | 62° | 4.5" | 0 | 11 | 0 | 69° – 77° |
| September | 78° | 55° | 4.7" | 0 | 10 | 0 | 63° – 70° |
| October | 65° | 43° | 4.0" | 0 | 11 | 0 | 49° – 61° |
| November | 54° | 34° | 3.1" | 0.5" | 9 | 0 | 38° – 49° |
| December | 44° | 27° | 3.6" | 3.7" | 11 | 4 | 27° – 46° |
| Year | 63° | 42° | 45.6" | 21.3" | 133 | 29 |
“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 Ontelaunee
Ontelaunee 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 133 days a year. Snow covers the ground about 29 days of the year.
About 202 frost-free days a year
In half of years the last 32° night comes by April 10 and the first one by October 31. That leaves about 202 frost-free days for gardens, longer than 73% of U.S. towns.
Heating and cooling a home in Ontelaunee
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Ontelaunee, 83% of that work is heating and 17% 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.
Ontelaunee and its neighbors
Ontelaunee borders 6 towns with climate data. January nights across them vary by 0.7°. Perry has the coldest January nights (21°) and Muhlenberg the hottest July afternoons (87°). Ontelaunee’s January low is 21° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Ontelaunee 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 Ontelaunee averaged 1.6° warmer than the 1900s. The biggest change is in December (+3.2°). The shift is larger than in 76% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Ontelaunee’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 21° to 40°. June is the most reliable, staying within 7°.
Common questions about Ontelaunee’s climate
What is the coldest month in Ontelaunee?
January, with a typical high of 39° and a low of 21°.
What is the hottest month in Ontelaunee?
July, with a typical high of 87° and a low of 64°. About 20 days a year reach 90°.
How much snow does Ontelaunee get?
About 21 inches in a normal winter, most of it in February.
When is the first frost in Ontelaunee?
In half of years the first 32° night comes by October 31, and the last spring frost by April 10.
What is the rainiest month in Ontelaunee?
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 Ontelaunee itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Hamburg, PA (7 mi, snow) and Reading 4 Nnw, PA (2 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.