Trenton, NY climate
Trenton has cold, snowy winters and pleasant summers, with plenty of rain. A typical July afternoon reaches 80°, a January night drops to 11°, and about 164 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeRight about normal today. The forecast high is 65°, and a typical Oct 2 in Trenton peaks around 64°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Trenton feels like
Winter
Spring
Summer
Fall
Trenton 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° | 11° | 3.5" | 39.7" | 20 | 29 | 8° – 29° |
| February | 32° | 12° | 2.9" | 39.2" | 16 | 28 | 8° – 29° |
| March | 40° | 21° | 3.3" | 26.7" | 15 | 27 | 21° – 42° |
| April | 55° | 32° | 3.8" | 6.2" | 14 | 9 | 36° – 49° |
| May | 68° | 44° | 4.4" | 0.2" | 14 | 0 | 50° – 61° |
| June | 76° | 53° | 4.7" | 0 | 14 | 0 | 61° – 70° |
| July | 80° | 58° | 4.7" | 0 | 13 | 0 | 64° – 73° |
| August | 79° | 56° | 4.2" | 0 | 13 | 0 | 64° – 71° |
| September | 72° | 49° | 4.3" | 0 | 13 | 0 | 57° – 66° |
| October | 59° | 38° | 4.9" | 1.4" | 16 | 1 | 43° – 55° |
| November | 46° | 29° | 3.8" | 15.5" | 16 | 10 | 32° – 43° |
| December | 34° | 19° | 4.1" | 35.1" | 19 | 24 | 19° – 38° |
| Year | 56° | 35° | 48.5" | 164.0" | 181 | 128 |
“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 Trenton
Trenton gets 48 inches of rain and melted snow a year. October is the wettest month and February the driest. Rain or snow falls on about 181 days a year. Snow covers the ground about 128 days of the year.
About 161 frost-free days a year
In half of years the last 32° night comes by May 4 and the first one by October 13. That leaves about 161 frost-free days for gardens, shorter than 70% of U.S. towns.
Heating and cooling a home in Trenton
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Trenton, 95% of that work is heating and 5% 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.
Trenton and its neighbors
Trenton borders 6 towns with climate data. January nights across them vary by 3.5°. Steuben has the coldest January nights (9°) and Floyd the hottest July afternoons (81°). Trenton’s January low is 11° and its July high 80°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Trenton 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 Trenton averaged 1.3° warmer than the 1900s. The biggest change is in December (+3.3°). The shift is larger than in 60% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Trenton’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 8° to 29°. August is the most reliable, staying within 7°.
Common questions about Trenton’s climate
What is the coldest month in Trenton?
January, with a typical high of 29° and a low of 11°.
What is the hottest month in Trenton?
July, with a typical high of 80° and a low of 58°. About 3 days a year reach 90°.
How much snow does Trenton get?
About 164 inches in a normal winter, most of it in January.
When is the first frost in Trenton?
In half of years the first 32° night comes by October 13, and the last spring frost by May 4.
What is the rainiest month in Trenton?
October, with 4.9 inches of rain and melted snow. The year totals 48 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Trenton itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Boonville 4 Ssw, NY (15 mi, snow) and Trenton Falls, NY (2 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.