Jerome has chilly, snowy winters and pleasant summers, with plenty of rain
A typical July afternoon reaches 82°, a January night drops to 18°, and about 65 inches of snow falls in a normal winter.
A year in Jerome at a glance
Each month’s typical high and low, and what it brings.
What stands out about Jerome’s climate
Read from where Jerome sits among Pennsylvania’s towns. The page puts what stands out first.
65 inches of snow, 49 of rain and melt
June is the wettest month and February the driest. Rain or snow falls on about 137 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 Jerome averaged 0.9° warmer than the 1900s. The biggest change is in December (+2.1°).
A smaller shift than in 77% of U.S. towns.
Change by month
What a year in Jerome feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 172 frost-free days a year
In half of years the last 32° night comes by April 26 and the first by October 17.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Jerome’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
172 frost-free days. The last frost comes by Apr 26 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 17.
About 65" a winter over 24 days with an inch or more, most in February. Snow covers the ground about 61 days a year.
Months averaging under 55° run from October through April. Heating is 93% of the year’s heating-and-cooling load.
About 2 days a year reach 90°, and July afternoons average 82°.
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 →Jerome and its neighbors
Jenner has the coldest January nights next door (18°) and Conemaugh the hottest July afternoons (82°). 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 Jerome compares
Against every U.S. town on TownTapestry, each counted once, with its place in Pennsylvania.
Jerome 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° | 18° | 3.8" | 17.9" | 15 | 19 | 19° – 36° |
| February | 39° | 20° | 3.2" | 19.9" | 13 | 18 | 17° – 39° |
| March | 47° | 26° | 4.1" | 8.2" | 11 | 8 | 30° – 49° |
| April | 61° | 36° | 4.3" | 1.5" | 12 | 1 | 43° – 54° |
| May | 70° | 46° | 4.5" | 0 | 12 | 0 | 52° – 66° |
| June | 78° | 55° | 4.8" | 0 | 11 | 0 | 62° – 69° |
| July | 82° | 59° | 4.7" | 0 | 10 | 0 | 66° – 75° |
| August | 80° | 57° | 4.3" | 0 | 10 | 0 | 65° – 73° |
| September | 73° | 50° | 4.1" | 0 | 9 | 0 | 59° – 67° |
| October | 62° | 39° | 3.6" | 0.2" | 10 | 0 | 47° – 57° |
| November | 50° | 31° | 3.5" | 3.8" | 11 | 3 | 34° – 46° |
| December | 40° | 23° | 3.9" | 13.1" | 14 | 13 | 21° – 42° |
| Year | 60° | 38° | 48.6" | 64.6" | 137 | 61 |
Heating and cooling a home in Jerome
93% 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. December swings the most: from 1991 to 2020 its average ranged from 21° to 42°. June is the most reliable, staying within 7°.
Common questions about Jerome’s climate
What is the coldest month in Jerome?
January, with a typical high of 36° and a low of 18°.
What is the hottest month in Jerome?
July, with a typical high of 82° and a low of 59°. About 2 days a year reach 90°.
How much snow does Jerome get?
About 65 inches in a normal winter, most of it in February.
When is the first frost in Jerome?
In half of years the first 32° night comes by October 17, and the last spring frost by April 26.
What is the rainiest month in Jerome?
June, with 4.8 inches of rain and melted snow. The year totals 49 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Jerome.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Jerome itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Boswell, PA (4 mi, snow) and Laurel Mtn, PA (11 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.