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7 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Old Tappan, NJ
Content continues below
May
Average Temperature
High
23°
Feels 23
Low
11°
Feels 11
Average Precipitation
11 Days
Rain amount
90.3mm
Snow amount
0cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
35°
20
33°
21
21°
22
20°
23
12°
24
15°
25
21°
26
23°
27
24°
28
23°
29
24°
30
25°
31
24°
Forecast
Tuesday, May 19, 2026
Day
35°
Feels 35
Wind
22 km/h SW
Gust
35 km/h
Humidity
31%
P.O.P
30%
Night
25°
Feels 25
Wind
18 km/h SW
Gust
29 km/h
Humidity
54%
P.O.P
20%
Historical Averages
May 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.