Wertsville (4 mi NE), New Jersey climate: Climate normals at a NOAA weather station
Wertsville (4 mi NE)'s normal year runs from 22°F January nights to 85°F July afternoons, with 51.0 inches of precipitation and 24 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.4°C, January lows of −6°C, July highs of 30°C, 1,295 mm of precipitation a year.
- NOAA stationWertsville (4 mi NE)
- Station IDUSC00289363
- Location40.45°N 74.78°W
- Elevation283 ft (86 m)
On October 23, the normal high in Wertsville (4 mi NE) is 62°F and the normal low 41°F, and the chance of measurable rain or snow is 33%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Wertsville (4 mi NE).
- Jan 38° 22°
- Feb 41° 23°
- Mar 50° 30°
- Apr 62° 40°
- May 71° 50°
- Jun 80° 59°
- Jul 85° 64°
- Aug 83° 62°
- Sep 77° 55°
- Oct 65° 44°
- Nov 54° 35°
- Dec 43° 28°
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 Wertsville (4 mi NE) each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 22°F. The most precipitation falls in July (5.51 in), the least in February (3.02 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 38°F | 22°F | 30.0°F | 3.76 | 5.9 | 11 | <1 | 27 | 9 h 30 min |
| February | 41°F | 23°F | 31.9°F | 3.02 | 8.3 | 10 | <1 | 25 | 10 h 40 min |
| March | 50°F | 30°F | 39.7°F | 4.30 | 3.9 | 11 | <1 | 21 | 11 h 50 min |
| April | 62°F | 40°F | 50.9°F | 4.05 | 0.9 | 12 | <1 | 6 | 13 h 10 min |
| May | 71°F | 50°F | 60.7°F | 4.35 | 0.0 | 13 | 1 | <1 | 14 h 20 min |
| June | 80°F | 59°F | 69.6°F | 4.69 | 0.0 | 12 | 3 | <1 | 15 h |
| July | 85°F | 64°F | 74.7°F | 5.51 | 0.0 | 11 | 7 | <1 | 14 h 50 min |
| August | 83°F | 62°F | 72.6°F | 4.27 | 0.0 | 11 | 4 | <1 | 13 h 50 min |
| September | 77°F | 55°F | 65.7°F | 4.48 | 0.0 | 9 | 2 | <1 | 12 h 30 min |
| October | 65°F | 44°F | 54.1°F | 4.44 | 0.0 | 11 | <1 | 3 | 11 h 10 min |
| November | 54°F | 35°F | 44.1°F | 3.49 | 0.3 | 9 | <1 | 14 | 10 h |
| December | 43°F | 28°F | 35.4°F | 4.62 | 4.6 | 11 | <1 | 24 | 9 h 20 min |
| Year (annual) | 62°F | 43°F | 52.5°F | 50.98 | 23.9 | 131 | 17 | 118 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 3°C | −6°C | −1.1°C | 96 mm | 15 cm |
| February | 5°C | −5°C | −0.1°C | 77 mm | 21 cm |
| March | 10°C | −1°C | 4.3°C | 109 mm | 10 cm |
| April | 17°C | 4°C | 10.5°C | 103 mm | 2 cm |
| May | 22°C | 10°C | 15.9°C | 110 mm | 0 cm |
| June | 27°C | 15°C | 20.9°C | 119 mm | 0 cm |
| July | 30°C | 18°C | 23.7°C | 140 mm | 0 cm |
| August | 28°C | 17°C | 22.6°C | 108 mm | 0 cm |
| September | 25°C | 13°C | 18.7°C | 114 mm | 0 cm |
| October | 18°C | 7°C | 12.3°C | 113 mm | 0 cm |
| November | 12°C | 1°C | 6.7°C | 89 mm | 1 cm |
| December | 6°C | −2°C | 1.9°C | 117 mm | 12 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00289363; 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 Wertsville (4 mi NE)?
Normal highs sit between 65°F and 85°F in May, June, August and September. Of those, September has the fewest days with rain (9).
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 USC00289363.
When is the last frost at Wertsville (4 mi NE)?
In Wertsville (4 mi NE), the last spring frost (32°F) comes after April 16 in half of years and after May 1 in one year in ten; the first autumn frost comes before October 27 in half of years and before October 10 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
- April 161 year in 10 after May 1; 9 in 10 after April 3
- First autumn frost, half of years before
- October 271 year in 10 before October 10; 9 in 10 before November 9
NOAA puts the median frost-free season at 192 days, and the season without a hard freeze (28°F) at 217 days.
A hard freeze (28°F) comes after April 3 in half of springs and before November 7 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Wertsville (4 mi NE) in zone 7a in ZIP code 08525, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 7a: the coldest night of a typical year reaches 4°F (20 complete years).
Frost dates for every NOAA station in New Jersey · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00289363; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 Wertsville (4 mi NE)?
In a normal year in Wertsville (4 mi NE), 17 days a year reach 90°F (1 of them 100°F or more), 118 nights fall to 32°F or colder and 131 days bring measurable precipitation.
- Days at 90°F or more
- 17a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 118a normal year
- Days that stay below freezing
- 20high of 32°F or less
- Days with 0.01 inch of precipitation
- 131a normal year
- Days with 1 inch of snow or more
- 7a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00289363.
How sunny is it at Wertsville (4 mi NE)?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds at Wertsville (4 mi NE), 3.9 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 68% | 1.9 |
| February | 71% | 2.8 |
| March | 69% | 3.7 |
| April | 71% | 4.8 |
| May | 70% | 5.4 |
| June | 76% | 6.0 |
| July | 80% | 6.0 |
| August | 78% | 5.2 |
| September | 76% | 4.3 |
| October | 71% | 3.0 |
| November | 72% | 2.2 |
| December | 66% | 1.6 |
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 Wertsville (4 mi NE) record?
A normal year at Wertsville (4 mi NE) brings 5,411 heating degree days, 1% more than the median U.S. place (5,373), and 871 cooling degree days, 4% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,232 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,086 | 0 |
| February | 927 | 0 |
| March | 785 | 0 |
| April | 429 | 8 |
| May | 179 | 44 |
| June | 31 | 169 |
| July | 1 | 302 |
| August | 5 | 240 |
| September | 75 | 98 |
| October | 347 | 10 |
| November | 629 | 0 |
| December | 918 | 0 |
| Year (annual) | 5,411 | 871 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00289363. 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 Wertsville (4 mi NE) been warmer than normal?
2023 averaged 53.5°F, 1.0°F above the 1991-2020 normal of 52.5°F. 2 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 52.9°F | +0.4°F | 48.56 | 14.2 |
| 2023 | 53.5°F | +1.0°F | 52.09 | – |
Source: observed years: ACIS, station USC00289363. A year counts only with all twelve months complete.
How does Wertsville (4 mi NE)'s climate compare?
Wertsville (4 mi NE) is warmer than 8 of the 33 places with their own NOAA record in New Jersey, and wetter than 27. Across the 7,247 U.S. stations with normals, its annual mean of 52.5°F is warmer than 52%.
In the Köppen classification computed from these normals, Wertsville (4 mi NE) is Dfa: continental, no dry season, hot 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 Wertsville (4 mi NE) share this climate record?
13 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.
- Hillsborough, NJ22,302 people · 8 mi NE
- Belle Mead, NJ6,772 people · 7 mi E
- Neshanic Station, NJ5,403 people · 6 mi NE
- Hopewell, NJ1,938 people · 4 mi S
- Flagtown, NJ985 people · 7 mi NE
- Ringoes, NJ868 people · 5 mi W
- Rocky Hill, NJ755 people · 8 mi SE
- Harlingen, NJ697 people · 7 mi E
- Neshanic, NJ625 people · 5 mi NE
- Three Bridges, NJ564 people · 5 mi N
- Skillman, NJ285 people · 4 mi SE
- East Rocky Hill, NJ212 people · 9 mi E
- Blawenburg, NJ92 people · 5 mi SE
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 Wertsville (4 mi NE)'s climate
What is the coldest month at Wertsville (4 mi NE)?
January, with a normal high of 38°F and a normal low of 22°F. The warmest is July (85°F by day, 64°F at night).
Does it snow at Wertsville (4 mi NE)?
Yes: 24 inches in a normal year, falling on 12 days with 0.1 inch or more, the most in February (8.3 inches).
What is the rainiest month at Wertsville (4 mi NE)?
July, with 5.51 in of precipitation in a normal year; the driest is February with 3.02 in.
What plant hardiness zone is Wertsville (4 mi NE) in?
The USDA's 2023 map puts Wertsville (4 mi NE) in zone 7a in ZIP code 08525, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches 4°F (20 years, 1991-2020): zone 7a.
How late can frost come at Wertsville (4 mi NE)?
In half of years the last 32°F night comes after April 16; in one year in ten it comes after May 1. Waiting until May 1 leaves about a one-in-ten chance of a later frost.
Nearby and next
- New Jersey climateThe statewide normals and every place in the state
- Flemington, NJ10 miles from this station, 52.1°F a year
- Lambertville, NJ11 miles from this station, 53.1°F a year
- Trenton, NJ12 miles from this station, 54.1°F a year
- Somerville, NJ13 miles from this station, 52.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made