Monthly Humidity Averages for New Jersey

The humidity averages for each month are listed below for places in New Jersey. The tables give the daily averages along with highest and lowest relative humidity levels.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.

All the numbers here are averages for the years 1961 to 1990.

Average Humidity

In this table, the Daily number for the month or year is the average of humidity readings taken every three hours throughout the day. Morning percentages are for 7 am and Afternoon measures are for 4 pm local standard time.

Average relative humidity (%) for Atlantic City, New Jersey

Daily		Morning	Afternoon
70	January	77	59
69	February	78	58
67	March	77	55
66	April	76	54
71	May	78	57
73	June	81	58
74	July	83	59
76	August	86	61
76	September	87	61
75	October	87	59
73	November	83	61
71	December	78	61
72	Annual	81	59

Average relative humidity (%) for Newark, New Jersey

Daily		Morning	Afternoon
65	January	73	57
63	February	72	54
60	March	69	50
58	April	66	47
62	May	70	50
63	June	70	51
63	July	72	51
66	August	75	54
68	September	78	55
66	October	78	53
67	November	76	57
67	December	74	59
64	Annual	73	53

Highest and Lowest Humidity

Below are the monthly and yearly averages for maximum and minimum humidity levels in New Jersey. The hours when a month's highest and lowest humidity readings usually occur are given in local standard time.

Daily high and low relative humidity (%) averages in Atlantic City, New Jersey

High	Time		Low	Time
77.3	7 am	January	57.8	1 pm
78.4	7 am	February	56.5	1 pm
77.5	4 am	March	53.3	1 pm
80.0	4 am	April	51.3	1 pm
85.5	4 am	May	54.8	1 pm
88.7	4 am	June	55.7	1 pm
89.1	4 am	July	56.8	1 pm
90.1	4 am	August	57.5	1 pm
89.2	4 am	September	57.8	1 pm
87.5	4 am	October	55.0	1 pm
83.2	7 am	November	57.0	1 pm
78.4	7 am	December	58.4	1 pm
83.4	4 am	Annual	56.0	1 pm

Daily high and low relative humidity (%) averages in Newark, New Jersey

High	Time		Low	Time
72.8	7 am	January	57.1	4 pm
71.9	7 am	February	54.1	4 pm
68.9	7 am	March	49.5	4 pm
68.9	4 am	April	46.8	4 pm
75.4	4 am	May	50.2	1 pm
76.9	4 am	June	51.2	1 pm
77.1	4 am	July	51.0	1 pm
79.8	4 am	August	52.9	1 pm
81.0	4 am	September	54.2	1 pm
78.6	4 am	October	52.1	1 pm
76.2	7 am	November	55.9	1 pm
74.0	7 am	December	58.5	1 pm
74.7	4 am	Annual	53.0	1 pm