19.05
tue
tue
Day
95°F
NE 8 mph
Precip.
0%
0%
Night
75°F
NE 9 mph
Precip.
0%
0%
20.05
wed
wed
Day
86°F
E 11 mph
Precip.
0%
0%
Night
66°F
S 9 mph
Precip.
77%
77%
21.05
thu
thu
Day
54°F
SW 6 mph
Precip.
100%
100%
Night
52°F
NE 2 mph
Precip.
0%
0%
22.05
fri
fri
Day
54°F
NW 6 mph
Precip.
100%
100%
Night
50°F
W 7 mph
Precip.
100%
100%
23.05
sat
sat
Day
50°F
W 11 mph
Precip.
100%
100%
Night
52°F
W 7 mph
Precip.
100%
100%
24.05
sun
sun
Day
52°F
W 11 mph
Precip.
100%
100%
Night
52°F
SW 7 mph
Precip.
23%
23%
25.05
mon
mon
Day
59°F
W 8 mph
Precip.
20%
20%
Night
57°F
NW 2 mph
Precip.
0%
0%
sea water
temperature
temperature
| New Castle |
monthly
weather
weather
| New Castle |
current
weather
weather
| New Castle |
14 days
forecast
forecast
| New Castle |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 61.3°F. The highest and lowest sea temperatures during the month were 65.7°F and 57.4°F.
Sea water temperature in June, °F
Show year:
2025
2024
2023
The average sea water temperature in June of 2025 was 70.4°F. The highest and lowest sea temperatures during the month were 78.4°F and 63.3°F.
Air temperature in New Castle, °F
Precipitation total in New Castle, in.
* Charts above show average data for the last 3 years.
Best time for vacation in New Castle
New Castle on a weather map
Places in USA:
Name
°F
24 Hours Forecast
New Castle
Local time: 08:34
May 19, tuesday
0900
81°F
NE
6 mph
6 mph
1200
95°F
NE
8 mph
8 mph
1500
102°F
NE
10 mph
10 mph
1800
91°F
NE
7 mph
7 mph
2100
81°F
NE
7 mph
7 mph
May 20, wednesday
0000
75°F
NE
9 mph
9 mph
0300
72°F
NE
7 mph
7 mph
0600
72°F
NE
6 mph
6 mph
