Hazen has chilly winters and warm summers
A typical July afternoon reaches 84°, a January night drops to 20°, and about 28 inches of snow falls in a normal winter.
A year in Hazen at a glance
Each month’s typical high and low, and what it brings.
What stands out about Hazen’s climate
Read from where Hazen sits among Pennsylvania’s towns. The page puts what stands out first.
28 inches of snow, 42 of rain and melt
June is the wettest month and February the driest. Rain or snow falls on about 156 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
What a year in Hazen feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 178 frost-free days a year
In half of years the last 32° night comes by April 27 and the first by October 25.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Hazen’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
178 frost-free days. The last frost comes by Apr 27 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 25.
About 28" a winter over 11 days with an inch or more, most in January. Snow covers the ground about 42 days a year.
Months averaging under 55° run from October through April. Heating is 90% of the year’s heating-and-cooling load.
About 10 days a year reach 90°, and July afternoons average 84°.
The nicest months are May, June, July, August, September and October.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Hazen and its neighbors
North Sewickley has the coldest January nights next door (20°) and Franklin the hottest July afternoons (84°). 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.
Warmer than it used to be
The last 30 years in Hazen averaged 1.4° warmer than the 1900s. The biggest change is in December (+2.7°).
A bigger shift than in 60% of U.S. towns.
Change by month
How Hazen compares
Against every U.S. town on TownTapestry, each counted once, with its place in Pennsylvania.
Hazen 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" | 10.1" | 16 | 16 | 20° – 38° |
| February | 40° | 22° | 2.4" | 7.7" | 12 | 12 | 17° – 39° |
| March | 49° | 29° | 3.2" | 3.7" | 12 | 5 | 32° – 50° |
| April | 62° | 38° | 3.7" | 0.3" | 15 | 0 | 44° – 55° |
| May | 72° | 48° | 3.9" | 0 | 14 | 0 | 53° – 67° |
| June | 80° | 57° | 4.5" | 0 | 13 | 0 | 64° – 71° |
| July | 84° | 61° | 4.2" | 0 | 12 | 0 | 68° – 76° |
| August | 83° | 60° | 3.8" | 0 | 11 | 0 | 67° – 75° |
| September | 76° | 53° | 3.8" | 0 | 11 | 0 | 62° – 69° |
| October | 64° | 42° | 3.0" | 0 | 12 | 0 | 49° – 59° |
| November | 52° | 33° | 3.0" | 0.8" | 13 | 2 | 37° – 48° |
| December | 41° | 26° | 3.1" | 4.9" | 14 | 7 | 23° – 44° |
| Year | 62° | 41° | 41.6" | 27.5" | 156 | 42 |
Heating and cooling a home in Hazen
90% 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 17° to 39°. September is the most reliable, staying within 7°.
Common questions about Hazen’s climate
What is the coldest month in Hazen?
January, with a typical high of 36° and a low of 20°.
What is the hottest month in Hazen?
July, with a typical high of 84° and a low of 61°. About 10 days a year reach 90°.
How much snow does Hazen get?
About 28 inches in a normal winter, most of it in January.
When is the first frost in Hazen?
In half of years the first 32° night comes by October 25, and the last spring frost by April 27.
What is the rainiest month in Hazen?
June, with 4.5 inches of rain and melted snow. The year totals 42 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Hazen.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Hazen itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at New Castle 1 N, PA (15 mi, snow) and Beaver Falls 1 Ne, PA (5 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. Today’s forecast: National Weather Service.