Photo: Zeete · CC BY-SA 4.0More precipitation falls on East Amwell Township than on 81% of U.S. towns: 49 inches a year
Midwinter brings lows of about 22°. July is the wettest month, February the driest. The outdoor season, with highs of 66–81°, runs through May, June, September and October.
A year in East Amwell Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about East Amwell Township’s climate
Compared with towns across the U.S., with East Amwell Township’s place in New Jersey beside it.
What a year in East Amwell Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 192 frost-free days a year
In half of years the last 32° night comes by April 16 and the first by October 27. Frost and day counts come from NOAA’s station at Wertsville 4 Ne, NJ, 2.6 miles from the town’s center, at about the same height.
The 2023 USDA map puts East Amwell Township’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 3°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 24 inches of snow a winter
Snow, measured at Wertsville 4 Ne, NJ, falls mostly in February. Precipitation (rain plus melted snow) adds up to 49 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 131 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in East Amwell Township
86% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Wertsville 4 Ne, NJ.
Living with East Amwell Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
192 frost-free days in zone 7a. The last frost comes by Apr 16 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 27.
Months with highs of 62–84° and lows of 40° or more: May, June, September and October. 22 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in East Amwell Township from natural hazards, river flooding is the largest share (66%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →East Amwell Township and its neighbors
Raritan Township has the coldest January nights next door (21°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like East Amwell Township’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| East Amwell Township, NJ | 22° | 86° | 49" | 24" |
| Clarksburg, WV | 23° | 85° | 47" | 24" |
| Walton, KY | 23° | 86° | 47" | 23" |
| North Vernon, IN | 23° | 86° | 48" | 17" |
| Amelia, OH | 23° | 86° | 46" | 23" |
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 East Amwell Township averaged 2.3° warmer than the 1900s. The biggest change is in December (+3.9°).
A bigger shift than in 98% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How East Amwell Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with East Amwell Township’s place among New Jersey’s.
East Amwell Township weather by month
Highs, lows and precipitation from NOAA’s grid at East Amwell Township’s center; snow, wet days and snow on the ground from Wertsville 4 Ne, NJ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 40° | 22° | 3.6" | 5.9" | 11 | 8 | 22° – 38° |
| February | 43° | 23° | 2.8" | 8.3" | 10 | 10 | 21° – 39° |
| March | 51° | 30° | 4.2" | 3.9" | 11 | 5 | 34° – 50° |
| April | 63° | 39° | 3.8" | 0.9" | 12 | 0 | 47° – 55° |
| May | 73° | 49° | 4.2" | 0.0" | 13 | 0 | 57° – 66° |
| June | 81° | 59° | 4.5" | 0.0" | 12 | 0 | 67° – 74° |
| July | 86° | 64° | 5.2" | 0.0" | 11 | 0 | 71° – 79° |
| August | 84° | 62° | 4.5" | 0.0" | 11 | 0 | 69° – 76° |
| September | 78° | 55° | 4.4" | 0.0" | 9 | 0 | 64° – 70° |
| October | 66° | 43° | 4.3" | 0.0" | 11 | 0 | 49° – 61° |
| November | 54° | 34° | 3.4" | 0.3" | 9 | 0 | 40° – 49° |
| December | 44° | 27° | 4.4" | 4.6" | 11 | 4 | 28° – 47° |
| Year | 64° | 42° | 49.2" | 23.9" | 131 | 28 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 28° to 47°. September is the most reliable, staying within 7°.
Where East Amwell Township’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at East Amwell Township’s center.
- Snow: Wertsville 4 Ne, NJ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Wertsville 4 Ne, NJ, 2.6 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about East Amwell Township’s climate
What is the weather like in East Amwell Township?
A typical July afternoon reaches 86°, a January night drops to 22°, and about 24 inches of snow falls in a normal winter. Milder January nights than 50% of U.S. towns; hotter July afternoons than 55% of U.S. towns.
How cold does it get in East Amwell Township in winter?
January nights average 22°. About 118 nights a year reach 32° or below and 1 reach 0° or below. In the coldest January of the last 30 years the month averaged 22°.
How much snow does East Amwell Township get?
About 24 inches in a normal winter at Wertsville 4 Ne, NJ, most of it in February, with snow on the ground about 28 days a year.
How hot does it get in East Amwell Township?
July, with a typical high of 86° and a low of 64°. About 17 days a year reach 90° (Wertsville 4 Ne, NJ).
When is the first and last frost in East Amwell Township?
In half of years the last spring frost (32°) comes by April 16 and the first fall frost by October 27, about 192 frost-free days, at Wertsville 4 Ne, NJ.
What growing zone is East Amwell Township in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 3°.
What is the best time of year to visit East Amwell Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is East Amwell Township getting warmer?
Yes: 1991–2020 averaged 2.3° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 98% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in East Amwell Township.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.