Photo: Nap173 · CC BY-SA 4.0Wet weather: 48 inches of rain and melted snow a year in Lopatcong Township, more than in 75% of U.S. towns
January nights here settle around 19°. From frosty January to warm July, readings climb 65°. Winter nights are cold: in January they are colder than in 62% of U.S. towns. Garden planting can start around April 18; autumn frost returns near October 25.
A year in Lopatcong Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lopatcong Township’s climate
Compared with towns across the U.S., with Lopatcong Township’s place in New Jersey beside it.
What a year in Lopatcong Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 188 frost-free days a year
In half of years the last 32° night comes by April 18 and the first by October 25. Frost and day counts come from NOAA’s station at Phillipsburg-easton Brg, NJ, 2.7 miles from the town’s center, 160 ft lower.
The 2023 USDA map puts Lopatcong Township’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 0°. 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 23 inches of snow a winter
Snow, measured at Belvidere Brg, NJ, falls mostly in January. Precipitation (rain plus melted snow) adds up to 48 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 Lopatcong Township
87% 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 Phillipsburg-easton Brg, NJ.
Living with Lopatcong Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
188 frost-free days in zone 7a. The last frost comes by Apr 18 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 25.
Months with highs of 62–84° and lows of 40° or more: May, June, August, September and October. 5.5 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lopatcong Township from natural hazards, river flooding is the largest share (69%); heat waves, cold waves, winter storms and ice storms together are 17%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lopatcong Township and its neighbors
Every town next door is within a degree of Lopatcong Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Lopatcong 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 |
|---|---|---|---|---|
| Lopatcong Township, NJ | 19° | 85° | 48" | 23" |
| Connellsville, PA | 21° | 84° | 46" | 24" |
| Ellettsville, IN | 21° | 85° | 47" | 18" |
| Clarksburg, WV | 23° | 85° | 47" | 24" |
| Taunton, MA | 20° | 84° | 50" | 26" |
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 Lopatcong Township averaged 2.3° warmer than the 1900s. The biggest change is in December (+4.1°).
A bigger shift than in 97% 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 Lopatcong Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lopatcong Township’s place among New Jersey’s.
Lopatcong Township weather by month
Highs, lows and precipitation from NOAA’s grid at Lopatcong Township’s center; snow, wet days and snow on the ground from Belvidere Brg, NJ. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 37° | 19° | 3.4" | 9.9" | 11 | 19° – 36° |
| February | 41° | 21° | 2.7" | 5.2" | 9 | 19° – 38° |
| March | 49° | 28° | 3.7" | 3.5" | 11 | 33° – 49° |
| April | 62° | 37° | 3.9" | 0.3" | 11 | 46° – 55° |
| May | 72° | 47° | 4.0" | 0.0" | 14 | 55° – 65° |
| June | 80° | 57° | 4.5" | 0.0" | 12 | 65° – 71° |
| July | 85° | 62° | 4.8" | 0.0" | 11 | 68° – 77° |
| August | 83° | 60° | 4.8" | 0.0" | 11 | 67° – 75° |
| September | 76° | 53° | 4.4" | 0.0" | 9 | 62° – 68° |
| October | 64° | 41° | 4.5" | 0.0" | 10 | 48° – 60° |
| November | 53° | 32° | 3.2" | 0.4" | 10 | 37° – 47° |
| December | 42° | 25° | 4.1" | 4.0" | 12 | 26° – 44° |
| Year | 62° | 40° | 47.9" | 23.3" | 131 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 19° to 38°. June is the most reliable, staying within 6°.
Where Lopatcong 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 Lopatcong Township’s center.
- Snow: Belvidere Brg, NJ.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Phillipsburg-easton Brg, NJ, 2.7 miles from the town’s center, 160 ft lower; 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 Lopatcong Township’s climate
What is the weather like in Lopatcong Township?
A typical July afternoon reaches 85°, a January night drops to 19°, and about 23 inches of snow falls in a normal winter. Colder January nights than 62% of U.S. towns; cooler July afternoons than 52% of U.S. towns.
How cold does it get in Lopatcong Township in winter?
January nights average 19°. About 119 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 19°.
How much snow does Lopatcong Township get?
About 23 inches in a normal winter at Belvidere Brg, NJ, most of it in January.
How hot does it get in Lopatcong Township?
July, with a typical high of 85° and a low of 62°. About 21 days a year reach 90° (Phillipsburg-easton Brg, NJ).
When is the first and last frost in Lopatcong Township?
In half of years the last spring frost (32°) comes by April 18 and the first fall frost by October 25, about 188 frost-free days, at Phillipsburg-easton Brg, NJ.
What growing zone is Lopatcong Township in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 0°.
What is the best time of year to visit Lopatcong Township?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Lopatcong Township getting warmer?
Yes: 1991–2020 averaged 2.3° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 97% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lopatcong 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.