18.03
wed
wed
Day
36°F
S 3 mph
Precip.
0%
0%
Night
32°F
NW 6 mph
Precip.
0%
0%
19.03
thu
thu
Day
43°F
N 8 mph
Precip.
0%
0%
Night
39°F
NE 4 mph
Precip.
0%
0%
20.03
fri
fri
Day
55°F
N 9 mph
Precip.
0%
0%
Night
50°F
N 12 mph
Precip.
0%
0%
21.03
sat
sat
Day
59°F
S 14 mph
Precip.
0%
0%
Night
48°F
W 2 mph
Precip.
0%
0%
22.03
sun
sun
Day
59°F
NE 8 mph
Precip.
0%
0%
Night
55°F
N 8 mph
Precip.
0%
0%
23.03
mon
mon
Day
43°F
S 14 mph
Precip.
100%
100%
Night
32°F
S 13 mph
Precip.
0%
0%
24.03
tue
tue
Day
39°F
S 9 mph
Precip.
0%
0%
Night
34°F
N 6 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 March, °F
Show year:
2026
2025
2024
The average sea water temperature in March of 2026 was 39.6°F. The highest and lowest sea temperatures during the month were 44.1°F and 35.8°F.
Sea water temperature in April, °F
Show year:
2025
2024
2023
The average sea water temperature in April of 2025 was 53.3°F. The highest and lowest sea temperatures during the month were 59.4°F and 50.0°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: 18:57
March 18, wednesday
2100
32°F
N
6 mph
6 mph
March 19, thursday
0000
32°F
NW
6 mph
6 mph
0300
32°F
NW
5 mph
5 mph
0600
30°F
N
4 mph
4 mph
0900
36°F
N
6 mph
6 mph
1200
43°F
N
8 mph
8 mph
1500
46°F
N
8 mph
8 mph
1800
45°F
NE
7 mph
7 mph
