Castleton-on-Hudson, NY climate
Castleton-on-Hudson has chilly, snowy winters and pleasant summers. A typical July afternoon reaches 84°, a January night drops to 16°, and about 53 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Castleton-on-Hudson feels like
Winter
Spring
Summer
Fall
Castleton-on-Hudson 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 | 34° | 16° | 2.7" | 15.6" | 12 | 21 | 14° – 32° |
| February | 37° | 18° | 2.3" | 9.4" | 9 | 17 | 13° – 34° |
| March | 46° | 26° | 2.9" | 10.9" | 11 | 11 | 28° – 46° |
| April | 60° | 36° | 3.3" | 2.4" | 11 | 1 | 42° – 53° |
| May | 71° | 48° | 3.6" | 0 | 12 | 0 | 55° – 65° |
| June | 79° | 57° | 4.4" | 0 | 12 | 0 | 65° – 73° |
| July | 84° | 62° | 4.2" | 0 | 11 | 0 | 68° – 76° |
| August | 82° | 60° | 4.1" | 0 | 10 | 0 | 67° – 74° |
| September | 74° | 53° | 4.1" | 0 | 10 | 0 | 60° – 68° |
| October | 62° | 42° | 4.1" | 0.3" | 10 | 0 | 47° – 58° |
| November | 50° | 32° | 3.0" | 3.1" | 11 | 3 | 36° – 45° |
| December | 39° | 24° | 3.4" | 11.0" | 11 | 12 | 24° – 42° |
| Year | 60° | 39° | 42.1" | 52.7" | 129 | 65 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Castleton-on-Hudson
Castleton-on-Hudson gets 42 inches of rain and melted snow a year. June is the wettest month and February the driest. Rain or snow falls on about 129 days a year. Snow covers the ground about 65 days of the year.
About 171 frost-free days a year
In half of years the last 32° night comes by April 27 and the first one by October 14. That leaves about 171 frost-free days for gardens, shorter than 59% of U.S. towns.
Heating and cooling a home in Castleton-on-Hudson
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Castleton-on-Hudson, 90% of that work is heating and 10% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Castleton-on-Hudson compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Castleton-on-Hudson averaged 1.5° warmer than the 1900s. The biggest change is in December (+3.3°). The shift is larger than in 70% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Castleton-on-Hudson’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. February swings the most: between 1991 and 2020 its average temperature ranged from 13° to 34°. August is the most reliable, staying within 7°.
Common questions about Castleton-on-Hudson’s climate
What is the coldest month in Castleton-on-Hudson?
January, with a typical high of 34° and a low of 16°.
What is the hottest month in Castleton-on-Hudson?
July, with a typical high of 84° and a low of 62°. About 10 days a year reach 90°.
How much snow does Castleton-on-Hudson get?
About 53 inches in a normal winter, most of it in January.
When is the first frost in Castleton-on-Hudson?
In half of years the first 32° night comes by October 14, and the last spring frost by April 27.
What is the rainiest month in Castleton-on-Hudson?
June, with 4.4 inches of rain and melted snow. The year totals 42 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Castleton-on-Hudson itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at West Sand Lake 2 S, NY (9 mi, snow) and Valatie 1 N, NY (8 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.