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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Hackettstown, NJ
Content continues below
May
Average Temperature
High
21°
Feels 22
Low
10°
Feels 9
Average Precipitation
12 Days
Rain amount
75.8mm
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
18°
16
25°
17
29°
18
32°
19
34°
20
30°
21
20°
22
19°
23
21°
24
21°
25
21°
26
22°
27
22°
28
23°
29
24°
30
31
Forecast
Friday, May 15, 2026
Day
18°
Feels 18
Wind
20 km/h NW
Gust
30 km/h
Humidity
49%
P.O.P
30%
Night
9°
Feels 9
Wind
14 km/h W
Gust
21 km/h
Humidity
87%
P.O.P
20%
Historical Averages
May 15
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.