Oswayo has cold, snowy winters and pleasant summers
A typical July afternoon reaches 79°, a January night drops to 14°, and about 60 inches of snow falls in a normal winter.
A year in Oswayo at a glance
Each month’s typical high and low, and what it brings.
What stands out about Oswayo’s climate
Read from where Oswayo sits among Pennsylvania’s towns. The page puts what stands out first.
About 130 frost-free days a year
In half of years the last 32° night comes by May 20 and the first by September 29.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Oswayo’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
130 frost-free days. The last frost comes by May 20 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 29.
About 60" a winter over 22 days with an inch or more, most in December. Snow covers the ground about 82 days a year.
Months averaging under 55° run from October through April. Heating is 97% of the year’s heating-and-cooling load.
About 2 days a year reach 90°, and July afternoons average 79°.
The nicest months are May, June, July, August and September.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →What a year in Oswayo feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
60 inches of snow, 42 of rain and melt
July is the wettest month and February the driest. Rain or snow falls on about 164 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Warmer than it used to be
The last 30 years in Oswayo averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.5°).
A smaller shift than in 70% of U.S. towns.
Change by month
Oswayo and its neighbors
Oswayo has the coldest January nights next door (14°) and Oswayo the hottest July afternoons (79°). 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.
How Oswayo compares
Against every U.S. town on TownTapestry, each counted once, with its place in Pennsylvania.
Oswayo 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 | 31° | 14° | 2.8" | 14.1" | 15 | 21 | 14° – 32° |
| February | 34° | 15° | 2.2" | 12.3" | 13 | 21 | 11° – 33° |
| March | 43° | 22° | 2.8" | 11.3" | 14 | 16 | 25° – 45° |
| April | 57° | 32° | 3.5" | 1.9" | 13 | 2 | 38° – 49° |
| May | 69° | 42° | 3.7" | 0.2" | 14 | 0 | 49° – 61° |
| June | 76° | 51° | 4.4" | 0 | 14 | 0 | 60° – 67° |
| July | 79° | 55° | 4.4" | 0 | 12 | 0 | 62° – 71° |
| August | 78° | 53° | 3.9" | 0 | 12 | 0 | 62° – 70° |
| September | 71° | 47° | 4.0" | 0 | 12 | 0 | 56° – 64° |
| October | 59° | 37° | 3.8" | 0.7" | 14 | 0 | 44° – 54° |
| November | 46° | 28° | 3.1" | 5.1" | 13 | 5 | 32° – 43° |
| December | 36° | 21° | 3.0" | 14.7" | 16 | 17 | 18° – 39° |
| Year | 57° | 35° | 41.7" | 60.3" | 164 | 82 |
Heating and cooling a home in Oswayo
97% 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 33°. June is the most reliable, staying within 7°.
Common questions about Oswayo’s climate
What is the coldest month in Oswayo?
January, with a typical high of 31° and a low of 14°.
What is the hottest month in Oswayo?
July, with a typical high of 79° and a low of 55°. About 2 days a year reach 90°.
How much snow does Oswayo get?
About 60 inches in a normal winter, most of it in December.
When is the first frost in Oswayo?
In half of years the first 32° night comes by September 29, and the last spring frost by May 20.
What is the rainiest month in Oswayo?
July, with 4.4 inches of rain and melted snow. The year totals 42 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Oswayo.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Oswayo itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Oswayo 1 Ene, 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.