Photo: Jerrye & Roy Klotz, MD · CC BY-SA 4.0Summers, winters and rain in Mannington Township all run close to those of most U.S. towns
The depth of winter brings overnight lows near 26°. By January nights alone, it runs milder than 66% of U.S. towns. Since 1901–2000, the year has warmed by 1.9°, most of all in December. Homes need heating from November to March, the months averaging under 50°.
A year in Mannington Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Mannington Township’s climate
Compared with towns across the U.S., with Mannington Township’s place in New Jersey beside it.
What a year in Mannington Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 209 frost-free days a year
In half of years the last 32° night comes by April 7 and the first by November 1. Frost and day counts come from NOAA’s station at Wilmington New Castle Co Airport, 11 miles from the town’s center, at about the same height.
The 2023 USDA map puts Mannington Township’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 9°. 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 20 inches of snow a winter
Snow, measured at Wilmington New Castle Co Airport, falls mostly in February. Precipitation (rain plus melted snow) adds up to 46 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 122 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Mannington Township
79% of the work is heating. Months averaging under 55° run from November 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 Wilmington New Castle Co Airport.
Living with Mannington Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
209 frost-free days in zone 7b. The last frost comes by Apr 7 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 1.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October. 0.6 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Mannington Township from natural hazards, river flooding is the largest share (32%); heat waves, cold waves, winter storms and ice storms together are 5%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Mannington Township and its neighbors
Every town next door is within a degree of Mannington Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Mannington 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 |
|---|---|---|---|---|
| Mannington Township, NJ | 26° | 87° | 46" | 20" |
| Cave Spring, VA | 27° | 87° | 45" | 18" |
| Fort Thomas, KY | 24° | 87° | 45" | 23" |
| Milford, OH | 23° | 87° | 45" | 16" |
| Lawrenceburg, IN | 23° | 86° | 45" | 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 Mannington Township averaged 1.9° warmer than the 1900s. The biggest change is in December (+3.3°).
A bigger shift than in 86% 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 Mannington Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Mannington Township’s place among New Jersey’s.
Mannington Township weather by month
Highs, lows and precipitation from NOAA’s grid at Mannington Township’s center; snow, wet days and snow on the ground from Wilmington New Castle Co Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 42° | 26° | 3.2" | 6.1" | 11 | 5 | 26° – 41° |
| February | 45° | 27° | 2.8" | 7.8" | 10 | 7 | 26° – 43° |
| March | 53° | 34° | 4.2" | 3.1" | 11 | 3 | 38° – 52° |
| April | 65° | 43° | 3.6" | 0.1" | 11 | 0 | 50° – 58° |
| May | 74° | 53° | 3.4" | 0.0" | 12 | 0 | 58° – 69° |
| June | 82° | 63° | 4.3" | 0.0" | 11 | 0 | 69° – 77° |
| July | 87° | 68° | 4.5" | 0.0" | 10 | 0 | 73° – 81° |
| August | 85° | 66° | 4.4" | 0.0" | 9 | 0 | 71° – 79° |
| September | 78° | 59° | 4.2" | 0.0" | 9 | 0 | 66° – 73° |
| October | 67° | 48° | 3.7" | 0.0" | 9 | 0 | 53° – 64° |
| November | 56° | 38° | 3.2" | 0.2" | 9 | 0 | 41° – 51° |
| December | 47° | 31° | 4.0" | 2.9" | 11 | 2 | 30° – 50° |
| Year | 65° | 46° | 45.5" | 20.2" | 122 | 17 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 30° to 50°. September is the most reliable, staying within 7°.
Where Mannington 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 Mannington Township’s center.
- Snow: Wilmington New Castle Co Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Wilmington New Castle Co Airport, 11 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 Mannington Township’s climate
What is the weather like in Mannington Township?
A typical July afternoon reaches 87°, a January night drops to 26°, and about 20 inches of snow falls in a normal winter. Milder January nights than 66% of U.S. towns; hotter July afternoons than 62% of U.S. towns.
How cold does it get in Mannington Township in winter?
January nights average 26°. About 92 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 26°.
How much snow does Mannington Township get?
About 20 inches in a normal winter at Wilmington New Castle Co Airport, most of it in February, with snow on the ground about 17 days a year.
How hot does it get in Mannington Township?
July, with a typical high of 87° and a low of 68°. About 22 days a year reach 90° (Wilmington New Castle Co Airport).
When is the first and last frost in Mannington Township?
In half of years the last spring frost (32°) comes by April 7 and the first fall frost by November 1, about 209 frost-free days, at Wilmington New Castle Co Airport.
What growing zone is Mannington Township in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 9°.
What is the best time of year to visit Mannington Township?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Mannington Township getting warmer?
Yes: 1991–2020 averaged 1.9° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 86% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Mannington 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.