Trenton Falls, New York climate: Climate normals at a NOAA weather station
Trenton Falls's normal year runs from 10°F January nights to 79°F July afternoons, with 51.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.4°C, January lows of −12°C, July highs of 26°C, 1,305 mm of precipitation a year.
- NOAA stationTrenton Falls
- Station IDUSC00308578
- Location43.28°N 75.16°W
- Elevation800 ft (244 m)
On October 23, the normal high in Trenton Falls is 56°F and the normal low 37°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Trenton Falls.
- Jan 29° 10°
- Feb 31° 13°
- Mar 39° 20°
- Apr 54° 34°
- May 67° 44°
- Jun 74° 53°
- Jul 79° 59°
- Aug 78° 57°
- Sep 71° 50°
- Oct 59° 40°
- Nov 46° 29°
- Dec 35° 19°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Trenton Falls each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 10°F. The most precipitation falls in October (5.34 in), the least in February (3.43 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 29°F | 10°F | 19.9°F | 3.58 | – | <1 | 30 | 9 h 20 min |
| February | 31°F | 13°F | 22.0°F | 3.43 | – | <1 | 27 | 10 h 30 min |
| March | 39°F | 20°F | 29.9°F | 3.45 | – | <1 | 27 | 11 h 50 min |
| April | 54°F | 34°F | 43.9°F | 4.01 | – | <1 | 16 | 13 h 20 min |
| May | 67°F | 44°F | 55.5°F | 4.64 | – | <1 | 2 | 14 h 40 min |
| June | 74°F | 53°F | 63.9°F | 4.78 | – | 1 | <1 | 15 h 20 min |
| July | 79°F | 59°F | 68.9°F | 4.95 | – | 2 | <1 | 15 h 10 min |
| August | 78°F | 57°F | 67.5°F | 4.28 | – | <1 | <1 | 14 h |
| September | 71°F | 50°F | 60.2°F | 4.15 | – | <1 | <1 | 12 h 30 min |
| October | 59°F | 40°F | 49.1°F | 5.34 | – | <1 | 4 | 11 h 10 min |
| November | 46°F | 29°F | 37.7°F | 4.36 | – | <1 | 20 | 9 h 40 min |
| December | 35°F | 19°F | 26.8°F | 4.41 | – | <1 | 27 | 9 h |
| Year (annual) | 55°F | 36°F | 45.4°F | 51.38 | – | 3 | 152 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −1°C | −12°C | −6.7°C | 91 mm |
| February | 0°C | −11°C | −5.6°C | 87 mm |
| March | 4°C | −6°C | −1.2°C | 88 mm |
| April | 12°C | 1°C | 6.6°C | 102 mm |
| May | 19°C | 7°C | 13.1°C | 118 mm |
| June | 24°C | 12°C | 17.7°C | 121 mm |
| July | 26°C | 15°C | 20.5°C | 126 mm |
| August | 25°C | 14°C | 19.7°C | 109 mm |
| September | 22°C | 10°C | 15.7°C | 105 mm |
| October | 15°C | 4°C | 9.5°C | 136 mm |
| November | 8°C | −2°C | 3.2°C | 111 mm |
| December | 1°C | −7°C | −2.9°C | 112 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Boonville (15 miles away), gets 164 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00308578; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Trenton Falls?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00308578.
When is the last frost at Trenton Falls?
In Trenton Falls, the last spring frost (32°F) comes after May 4 in half of years and after May 23 in one year in ten; the first autumn frost comes before October 13 in half of years and before September 29 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 41 year in 10 after May 23; 9 in 10 after April 20
- First autumn frost, half of years before
- October 131 year in 10 before September 29; 9 in 10 before October 29
NOAA puts the median frost-free season at 161 days, and the season without a hard freeze (28°F) at 188 days.
A hard freeze (28°F) comes after April 21 in half of springs and before October 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Trenton Falls in zone 5a in ZIP code 13435, the nearest ZIP area.
Frost dates for every NOAA station in New York · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00308578; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Trenton Falls?
In a normal year in Trenton Falls, 3 days a year reach 90°F and 152 nights fall to 32°F or colder.
- Days at 90°F or more
- 3a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 152a normal year
- Days that stay below freezing
- 56high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00308578.
How sunny is it at Trenton Falls?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds at Trenton Falls, 3.6 kWh per square metre a day. August is the sunniest month (76%) and December the cloudiest (49%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 54% | 1.4 |
| February | 59% | 2.2 |
| March | 65% | 3.5 |
| April | 65% | 4.5 |
| May | 69% | 5.4 |
| June | 71% | 5.8 |
| July | 76% | 5.9 |
| August | 76% | 5.2 |
| September | 74% | 4.1 |
| October | 61% | 2.5 |
| November | 58% | 1.6 |
| December | 49% | 1.0 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Trenton Falls record?
A normal year at Trenton Falls brings 7,466 heating degree days, 39% more than the median U.S. place (5,373), and 375 cooling degree days, 59% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,233 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,398 | 0 |
| February | 1,202 | 0 |
| March | 1,088 | 0 |
| April | 634 | 1 |
| May | 314 | 20 |
| June | 97 | 62 |
| July | 21 | 142 |
| August | 32 | 109 |
| September | 184 | 40 |
| October | 493 | 2 |
| November | 821 | 0 |
| December | 1,183 | 0 |
| Year (annual) | 7,466 | 375 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00308578. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Trenton Falls been warmer than normal?
2024 averaged 49.1°F, 3.7°F above the 1991-2020 normal of 45.4°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 47.0°F | +1.6°F | 59.62 |
| 2023 | 47.5°F | +2.1°F | 56.32 |
| 2024 | 49.1°F | +3.7°F | 52.33 |
Source: observed years: ACIS, station USC00308578. A year counts only with all twelve months complete.
How does Trenton Falls's climate compare?
Trenton Falls is warmer than 31 of the 131 places with their own NOAA record in New York, and wetter than 112. Across the 7,247 U.S. stations with normals, its annual mean of 45.4°F is warmer than 21%.
In the Köppen classification computed from these normals, Trenton Falls is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Trenton Falls share this climate record?
7 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Newport, NY556 people · 9 mi SE
- Poland, NY478 people · 6 mi SE
- Remsen, NY414 people · 4 mi NW
- Holland Patent, NY395 people · 6 mi SW
- Prospect, NY337 people · 2 mi N
- Cold Brook, NY261 people · 6 mi SE
- Barneveld, NY176 people · 2 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Trenton Falls's climate
What is the coldest month at Trenton Falls?
January, with a normal high of 29°F and a normal low of 10°F. The warmest is July (79°F by day, 59°F at night).
Does it snow at Trenton Falls?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Boonville (15 miles away), records 164 inches of snow in a normal year.
What is the rainiest month at Trenton Falls?
October, with 5.34 in of precipitation in a normal year; the driest is February with 3.43 in.
What plant hardiness zone is Trenton Falls in?
The USDA's 2023 map puts Trenton Falls in zone 5a in ZIP code 13435, the nearest ZIP area.
How late can frost come at Trenton Falls?
In half of years the last 32°F night comes after May 4; in one year in ten it comes after May 23. Waiting until May 23 leaves about a one-in-ten chance of a later frost.
Nearby and next
- New York climateThe statewide normals and every place in the state
- Rome, NY13 miles from this station, 46.6°F a year
- Utica, NY14 miles from this station, 46.7°F a year
- Boonville, NY16 miles from this station, 42.0°F a year
- Little Falls, NY21 miles from this station, 45.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made