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Climate in Martinsville · NOAA 1991–2020 normals

Martinsville has chilly winters and warm summers, with plenty of rain

A typical July afternoon reaches 86°, a January night drops to 22°, and about 21 inches of snow falls in a normal winter.

July high
86°
319th coolest of 941 New Jersey towns
January low
22°
231st coldest of 941 New Jersey towns
Rain + melted snow
50"
39th wettest of 941 New Jersey towns
Snow a winter
21"
212th least snowy of 898 New Jersey towns
Frost-free days
172
Apr 30 to Oct 20
90° days
16
in a normal year

A year in Martinsville at a glance

Each month’s typical high and low, and what it brings.

Jan39°22° 7" snow
Feb42°24° 7" snow
Mar50°30° 4" snow
Apr63°39° Last frost ~30
May72°49° Nice out
Jun81°58° Nice out3 days 90°+
Jul86°64° 7 days 90°+Wettest
Aug84°62° Nice out4 days 90°+
Sep77°55° Nice out
Oct now65°44° Nice outFirst frost ~20
Nov54°35°
Dec44°27° 4" snow

What stands out about Martinsville’s climate

Read from where Martinsville sits among New Jersey’s towns. The page puts what stands out first.

Wetter than most of NJ50" of rain and melted snow a year, the 39th wettest of 941 New Jersey towns.A short growing seasonAbout 172 frost-free days: frost can come by Oct 20.
★ What stands out · Rain & snow

21 inches of snow, 50 of rain and melt

July is the wettest month and February the driest. Rain or snow falls on about 121 days a year.

50"
Rain + melted snow a year
39th wettest of 941 New Jersey towns
More than 87% of U.S. towns
21"
Snow in a normal winter
212th least snowy of 898 New Jersey towns
Less than 56% of U.S. towns
121 days
With rain or snow
341st driest of 898 New Jersey towns
More than 62% of U.S. towns

Rain + melted snow by month

Inches of water

5.0"
JFMAMJJASOND

Snowfall by month

Inches of snow

6.8"
JFMAMJJASOND
Living here

Living with Martinsville’s climate

What the numbers mean for a garden, a driveway, a furnace and a free afternoon.

The garden window

172 frost-free days. The last frost comes by Apr 30 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 20.

Snow season

About 21" a winter over 6 days with an inch or more, most in January.

Furnace season

Months averaging under 55° run from October through April. Heating is 89% of the year’s heating-and-cooling load.

Summer heat

About 16 days a year reach 90°, and July afternoons average 86°.

Get outside

The nicest months are May, June, August, September and October. 30 miles of trails are waiting.

Parks & trails →
Storms and extremes

Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.

Natural hazards →
A normal year

What a year in Martinsville feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
42° / 24°
6 days with 1"+ of snow
Spring
62° / 40°
Last frost around Apr 30
Summer
83° / 61°
16 days reach 90°
Fall
65° / 44°
First frost around Oct 20
Best months to be outsideMayJunAugSepOctHighs of 62–84° and lows of 40° or more
Frost & heat

About 172 frost-free days a year

In half of years the last 32° night comes by April 30 and the first by October 20.

137
nights at or below 32° in a normal year
2
nights below 0° in a normal year
16
days that reach 90° in a normal year

Freezing nights by month

Average nights at or below 32°

28
JFMAMJJASOND

90° days by month

Average days at 90° or more

7.0
JFMAMJJASOND
Next door

Martinsville and its neighbors

Bedminster has the coldest January nights next door (21°) and Bound Brook the hottest July afternoons (87°). Tap a town to see its climate.

Bridgewater Center: January low 22°, July high 87°Bradley Gardens: January low 22°, July high 87°Branchburg: January low 22°, July high 86°Somerville: January low 22°, July high 87°Manville: January low 22°, July high 87°South Bound Brook: January low 23°, July high 87°Piscataway: January low 23°, July high 87°Dunellen: January low 22°, July high 87°Long Hill: January low 22°, July high 86°Gillette: January low 22°, July high 86°Liberty Corner: January low 21°, July high 86°Stirling: January low 22°, July high 86°Berkeley Heights: January low 22°, July high 86°Watchung: January low 22°, July high 86°The Hills: January low 21°, July high 86°Franklin Center: January low 23°, July high 87°Franklin: January low 23°, July high 87°Hillsborough: January low 22°, July high 87°Tewksbury: January low 20°, July high 85°Lamington: January low 21°, July high 86°Readington: January low 21°, July high 86°Peapack and Gladstone: January low 21°, July high 86°Far Hills: January low 21°, July high 86°Oldwick: January low 21°, July high 86°Pottersville: January low 20°, July high 85°Basking Ridge: January low 21°, July high 86°Harding: January low 21°, July high 86°Millington: January low 21°, July high 86°Bernardsville: January low 21°, July high 85°Lyons: January low 21°, July high 86°Plainfield: January low 23°, July high 87°North Plainfield: January low 23°, July high 87°Bridgewater: January low 22°, July high 86°Green Knoll: January low 22°, July high 86°Bound Brook: January low 23°, July high 87°Middlesex: January low 23°, July high 87°Warren: January low 22°, July high 86°Pluckemin: January low 21°, July high 86°Finderne: January low 22°, July high 87°Bedminster: January low 21°, July high 86°Bernards: January low 21°, July high 86°Green Brook: January low 22°, July high 87°Martinsville: January low 22°, July high 86° MartinsvilleBridgewaterGreen KnollBound BrookMiddlesexWarrenPluckeminFinderneBedminsterBernardsGreen Brook
ColderMilder20° to 23°
Bedminster20.7° −0.9°
Bernards21.2° −0.4°
Pluckemin21.3° −0.3°
Martinsville21.6°
Bridgewater21.6° same
Green Knoll21.6° same
Warren21.7° +0.1°
Finderne22.1° +0.5°
Green Brook22.4° +0.8°
Bound Brook22.5° +0.9°
Middlesex22.7° +1.1°

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.

Then and now

Warmer than it used to be

The last 30 years in Martinsville averaged 2.3° warmer than the 1900s. The biggest change is in December (+3.8°).

+2.3°1991–2020 vs. 1901–2000

A bigger shift than in 98% of U.S. towns.

❄️ Winter+3.2°now 33°, was 30°
🌷 Spring+1.9°now 51°, was 49°
☀️ Summer+2.0°now 72°, was 70°
🍂 Fall+1.9°now 55°, was 53°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec
Compared with other towns

How Martinsville compares

Against every U.S. town on TownTapestry, each counted once, with its place in New Jersey.

Summer heat86° July high
Hotter than 55% of U.S. towns319th coolest of 941 New Jersey towns
Winter cold22° January low
Milder than 61% of U.S. towns231st coldest of 941 New Jersey towns
Precipitation50" a year
Wetter than 87% of U.S. towns39th wettest of 941 New Jersey towns
Snow21" a winter
Less snow than 56% of U.S. towns212th least snowy of 898 New Jersey towns
Growing season172 frost-free days
Shorter than 58% of U.S. towns82nd shortest of 941 New Jersey towns
Snowiest, mildest, wettest and more in NJ →
Month by month

Martinsville weather by month

Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.

MonthHighLowRain + meltSnowWet days30-yr range
January39°22°3.6" 6.8"1022° – 38°
February42°24°2.9" 6.7"821° – 39°
March50°30°4.3" 3.6"1034° – 49°
April63°39°3.9" 0.2"1147° – 56°
May72°49°4.2" 01256° – 66°
June81°58°4.7" 01166° – 73°
July86°64°5.0" 01070° – 78°
August84°62°4.6" 01068° – 76°
September77°55°4.4" 0963° – 71°
October65°44°4.5" 0.1"1050° – 61°
November54°35°3.4" 0.1"939° – 49°
December44°27°4.4" 3.5"1028° – 47°
Year63°42°49.9"21.0"121
Heating & cooling

Heating and cooling a home in Martinsville

89% of the work is heating, so the furnace matters far more than the air conditioner.

89%heating
5,769 heating degree daysMore heating than 50% of U.S. towns
748 cooling degree daysLess cooling than 57% of U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.

Year to year

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°. June is the most reliable, staying within 7°.

Coldest to warmest month in 30 yearsNormal

Common questions about Martinsville’s climate

What is the coldest month in Martinsville?

January, with a typical high of 39° and a low of 22°.

What is the hottest month in Martinsville?

July, with a typical high of 86° and a low of 64°. About 16 days a year reach 90°.

How much snow does Martinsville get?

About 21 inches in a normal winter, most of it in January.

When is the first frost in Martinsville?

In half of years the first 32° night comes by October 20, and the last spring frost by April 30.

What is the rainiest month in Martinsville?

July, with 5.0 inches of rain and melted snow. The year totals 50 inches.

Neighbors talk weather

Gardens, snow, and the best days of the year in Martinsville.

Town Square →
Weigh in
Is Martinsville’s weather one of its best features?

Your answer becomes a post in Town Square.

Ask your neighbors

Temperatures and rainfall come from NOAA’s gridded climate normals for Martinsville itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Bound Brook 2w, NJ (3 mi, snow) and Somerville 4 Nw, NJ (4 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.

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