The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Raritan, NJ
Content continues below
May
Average Temperature
High
23°
Feels 23
Low
11°
Feels 10
Average Precipitation
12 Days
Rain amount
85.8mm
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
19°
10
25°
11
20°
12
18°
13
16°
14
15°
15
17°
16
21°
17
24°
18
27°
19
26°
20
23°
21
22°
22
22°
23
24°
24
25
26
27
28
29
30
31
Forecast
Saturday, May 9, 2026
Day
19°
Feels 19
Wind
19 km/h SW
Gust
29 km/h
Humidity
52%
P.O.P
90%
Rain
~5 mm
Night
10°
Feels 9
Wind
6 km/h SE
Gust
12 km/h
Humidity
100%
P.O.P
30%
Historical Averages
May 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.