Port Henry has cold, snowy winters and pleasant summers
A typical July afternoon reaches 81°, a January night drops to 10°, and about 59 inches of snow falls in a normal winter.
A year in Port Henry at a glance
Each month’s typical high and low, and what it brings.
What stands out about Port Henry’s climate
Read from where Port Henry sits among New York’s towns. The page puts what stands out first.
About 151 frost-free days a year
In half of years the last 32° night comes by May 5 and the first by October 3.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
What a year in Port Henry feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
59 inches of snow, 40 of rain and melt
June is the wettest month and February the driest. Rain or snow falls on about 129 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Living with Port Henry’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
151 frost-free days. The last frost comes by May 5 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 3.
About 59" a winter over 17 days with an inch or more, most in December. Snow covers the ground about 78 days a year.
Months averaging under 55° run from October through April. Heating is 95% of the year’s heating-and-cooling load.
About 7 days a year reach 90°, and July afternoons average 81°.
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 →Port Henry and its neighbors
Crown Point has the coldest January nights next door (8°) and Moriah the hottest July afternoons (80°). 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 Port Henry averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.8°).
A bigger shift than in 83% of U.S. towns.
Change by month
How Port Henry compares
Against every U.S. town on TownTapestry, each counted once, with its place in New York.
Port Henry 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 | 29° | 10° | 2.7" | 13.3" | 11 | 22 | 6° – 28° |
| February | 32° | 11° | 2.2" | 13.3" | 9 | 20 | 6° – 28° |
| March | 41° | 20° | 2.8" | 11.9" | 9 | 15 | 21° – 42° |
| April | 55° | 32° | 3.5" | 2.6" | 11 | 2 | 38° – 49° |
| May | 68° | 44° | 3.4" | 0 | 11 | 0 | 50° – 61° |
| June | 76° | 53° | 4.1" | 0 | 12 | 0 | 62° – 70° |
| July | 81° | 58° | 4.1" | 0 | 11 | 0 | 64° – 74° |
| August | 79° | 56° | 3.6" | 0 | 11 | 0 | 64° – 71° |
| September | 71° | 48° | 3.3" | 0 | 9 | 0 | 55° – 65° |
| October | 58° | 38° | 3.7" | 0.3" | 12 | 0 | 43° – 55° |
| November | 45° | 29° | 3.2" | 3.8" | 10 | 3 | 31° – 43° |
| December | 35° | 18° | 3.1" | 13.4" | 12 | 16 | 19° – 38° |
| Year | 56° | 35° | 39.6" | 58.6" | 129 | 78 |
Heating and cooling a home in Port Henry
95% 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. January swings the most: from 1991 to 2020 its average ranged from 6° to 28°. August is the most reliable, staying within 7°.
Common questions about Port Henry’s climate
What is the coldest month in Port Henry?
January, with a typical high of 29° and a low of 10°.
What is the hottest month in Port Henry?
July, with a typical high of 81° and a low of 58°. About 7 days a year reach 90°.
How much snow does Port Henry get?
About 59 inches in a normal winter, most of it in December.
When is the first frost in Port Henry?
In half of years the first 32° night comes by October 3, and the last spring frost by May 5.
What is the rainiest month in Port Henry?
June, with 4.1 inches of rain and melted snow. The year totals 40 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Port Henry.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Port Henry itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Cornwall, VT (14 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.