18.03
wed
wed
Day
37°F
S 4 mph
Precip.
0%
0%
Night
30°F
NW 6 mph
Precip.
0%
0%
19.03
thu
thu
Day
41°F
N 8 mph
Precip.
0%
0%
Night
37°F
NE 4 mph
Precip.
0%
0%
20.03
fri
fri
Day
52°F
N 7 mph
Precip.
0%
0%
Night
48°F
N 12 mph
Precip.
0%
0%
21.03
sat
sat
Day
63°F
S 11 mph
Precip.
0%
0%
Night
46°F
NW 4 mph
Precip.
0%
0%
22.03
sun
sun
Day
59°F
NE 9 mph
Precip.
0%
0%
Night
55°F
N 9 mph
Precip.
0%
0%
23.03
mon
mon
Day
55°F
SE 16 mph
Precip.
52%
52%
Night
34°F
S 14 mph
Precip.
0%
0%
24.03
tue
tue
Day
41°F
S 12 mph
Precip.
0%
0%
Night
36°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 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: 17:25
March 18, wednesday
1800
39°F
N
6 mph
6 mph
2100
34°F
N
6 mph
6 mph
March 19, thursday
0000
30°F
NW
6 mph
6 mph
0300
30°F
NW
5 mph
5 mph
0600
30°F
N
4 mph
4 mph
0900
36°F
N
7 mph
7 mph
1200
41°F
N
8 mph
8 mph
1500
46°F
N
9 mph
9 mph
