Hartsville has cold, snowy winters and pleasant summers
A typical July afternoon reaches 79°, a January night drops to 14°, and about 61 inches of snow falls in a normal winter.
A year in Hartsville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Hartsville’s climate
Read from where Hartsville sits among New York’s towns. The page puts what stands out first.
Living with Hartsville’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
135 frost-free days. The last frost comes by May 18 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 1.
About 61" a winter over 16 days with an inch or more, most in January. Snow covers the ground about 71 days a year.
Months averaging under 55° run from October through April. Heating is 96% of the year’s heating-and-cooling load.
About 5 days a year reach 90°, and July afternoons average 79°.
The nicest months are May, June, July, August and September. 2.4 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Warmer than it used to be
The last 30 years in Hartsville averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.6°).
A smaller shift than in 73% of U.S. towns.
Change by month
What a year in Hartsville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
61 inches of snow, 38 of rain and melt
June is the wettest month and February the driest. Rain or snow falls on about 160 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
About 135 frost-free days a year
In half of years the last 32° night comes by May 18 and the first by October 1.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Hartsville and its neighbors
Alfred has the coldest January nights next door (13°) and Hornellsville 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 Hartsville compares
Against every U.S. town on TownTapestry, each counted once, with its place in New York.
Hartsville 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° | 2.4" | 14.9" | 16 | 20 | 12° – 32° |
| February | 33° | 15° | 2.1" | 13.4" | 12 | 18 | 10° – 33° |
| March | 42° | 22° | 2.5" | 11.5" | 14 | 13 | 24° – 44° |
| April | 55° | 32° | 3.1" | 1.7" | 14 | 1 | 37° – 49° |
| May | 68° | 43° | 3.5" | 0.1" | 14 | 0 | 48° – 61° |
| June | 75° | 52° | 4.0" | 0 | 13 | 0 | 60° – 67° |
| July | 79° | 56° | 3.8" | 0 | 12 | 0 | 63° – 71° |
| August | 78° | 54° | 3.7" | 0 | 12 | 0 | 62° – 70° |
| September | 70° | 48° | 3.6" | 0 | 12 | 0 | 56° – 64° |
| October | 59° | 37° | 3.8" | 0.4" | 14 | 0 | 43° – 54° |
| November | 46° | 29° | 2.8" | 5.8" | 14 | 5 | 32° – 44° |
| December | 35° | 20° | 2.6" | 13.3" | 14 | 15 | 18° – 39° |
| Year | 56° | 35° | 37.8" | 61.1" | 160 | 71 |
Heating and cooling a home in Hartsville
96% 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 10° to 33°. August is the most reliable, staying within 7°.
Common questions about Hartsville’s climate
What is the coldest month in Hartsville?
January, with a typical high of 31° and a low of 14°.
What is the hottest month in Hartsville?
July, with a typical high of 79° and a low of 56°. About 5 days a year reach 90°.
How much snow does Hartsville get?
About 61 inches in a normal winter, most of it in January.
When is the first frost in Hartsville?
In half of years the first 32° night comes by October 1, and the last spring frost by May 18.
What is the rainiest month in Hartsville?
June, with 4.0 inches of rain and melted snow. The year totals 38 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Hartsville.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Hartsville itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Whitesville 1n, NY (12 mi, snow) and Alfred, NY (7 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.