21.07
tue
tue
Day
84°F
N 11 mph
Precip.
10%
10%
Night
70°F
N 7 mph
Precip.
46%
46%
22.07
wed
wed
Day
84°F
E 11 mph
Precip.
20%
20%
Night
68°F
SE 11 mph
Precip.
4%
4%
23.07
thu
thu
Day
73°F
S 9 mph
Precip.
1%
1%
Night
64°F
SE 4 mph
Precip.
4%
4%
24.07
fri
fri
Day
81°F
SW 4 mph
Precip.
1%
1%
Night
66°F
W 4 mph
Precip.
8%
8%
25.07
sat
sat
Day
79°F
W 6 mph
Precip.
1%
1%
Night
66°F
N 2 mph
Precip.
7%
7%
26.07
sun
sun
Day
84°F
SE 1 mph
Precip.
1%
1%
Night
70°F
N 6 mph
Precip.
6%
6%
27.07
mon
mon
Day
84°F
NE 7 mph
Precip.
4%
4%
Night
70°F
E 13 mph
Precip.
27%
27%
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 July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 80.2°F. The highest and lowest sea temperatures during the month were 82.0°F and 76.1°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 79.6°F. The highest and lowest sea temperatures during the month were 84.0°F and 75.9°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: 09:31
July 21, tuesday
1200
84°F
N
11 mph
11 mph
1500
91°F
NE
13 mph
13 mph
1800
91°F
SE
11 mph
11 mph
2100
70°F
NE
6 mph
6 mph
July 22, wednesday
0000
70°F
N
7 mph
7 mph
0300
70°F
NE
6 mph
6 mph
0600
72°F
NE
8 mph
8 mph
0900
77°F
NE
10 mph
10 mph
