What is the hottest month in South Amboy?

July is the warmest month in South Amboy, with an average high of 86.5°F.

What is the coldest month in South Amboy?

January is the coldest month in South Amboy, with an average low of 22.9°F.

What month does South Amboy get the most rain?

June is typically the wettest month in South Amboy, with about 4.83 inches of precipitation.

What plant hardiness zone is South Amboy in?

South Amboy is approximately in USDA plant hardiness Zone 7b, based on the average annual extreme minimum temperature.

South Amboy, NJ

Climate overview — based on NOAA 1991-2020 normals from NEW BRUNSWICK 3 SE, NJ US.

Dfa Hot-summer humid continental climate 7b USDA hardiness Zone 7b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

South Amboy has an annual average temperature of 53.8°F with about 49.5 inches of precipitation per year and 29 inches of snow. The warmest month is July (average high 86.5°F), and the coldest is January (average low 22.9°F). June is typically the wettest month (4.83 in) and February the driest (2.97 in). Snow typically falls from October through April.

Pleasant months

2 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

44.5°F

warmest to coldest month

Heating need

4,905

HDD/yr

Cooling need

858

CDD/yr

Best time to visit South Amboy

Full guide →

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	40.3°F	22.9°F	31.6°F	3.74 in	8.3 in	11
February	42.8°F	24.0°F	33.4°F	2.97 in	9.3 in	10
March	50.6°F	31.0°F	40.8°F	4.40 in	5.2 in	11
April	62.5°F	40.8°F	51.7°F	3.89 in	0.6 in	12
May	72.1°F	50.6°F	61.3°F	4.03 in	—	13
June	81.2°F	60.4°F	70.8°F	4.83 in	—	11
July	86.5°F	65.6°F	76.1°F	4.83 in	—	11
August	84.7°F	64.0°F	74.3°F	4.66 in	—	10
September	78.4°F	56.5°F	67.4°F	4.18 in	—	9
October	66.5°F	44.2°F	55.4°F	4.11 in	0.2 in	10
November	55.5°F	35.2°F	45.4°F	3.40 in	0.5 in	9
December	45.4°F	28.4°F	36.9°F	4.49 in	4.9 in	10