World Resorts USA New Castle Weather

New Castle 14 Days Forecast

23.12
tue
Day
37°F
N 7 mph
Precip.
100%
Night
37°F
E 6 mph
Precip.
0%
24.12
wed
Day
45°F
SE 14 mph
Precip.
0%
Night
34°F
SW 2 mph
Precip.
0%
25.12
thu
Day
36°F
NE 9 mph
Precip.
100%
Night
32°F
S 11 mph
Precip.
0%
26.12
fri
Day
28°F
SW 6 mph
Precip.
0%
Night
28°F
W 10 mph
Precip.
100%
27.12
sat
Day
34°F
SW 9 mph
Precip.
100%
Night
30°F
SW 5 mph
Precip.
0%
28.12
sun
Day
36°F
NW 6 mph
Precip.
22%
Night
37°F
E 11 mph
Precip.
67%
29.12
mon
Day
25°F
E 15 mph
Precip.
86%
Night
21°F
E 17 mph
Precip.
0%
30.12
tue
Day
27°F
E 16 mph
Precip.
26%
Night
27°F
SE 14 mph
Precip.
0%
31.12
wed
Day
28°F
SE 11 mph
Precip.
0%
Night
25°F
SE 5 mph
Precip.
0%
01.01
thu
Day
32°F
E 8 mph
Precip.
0%
Night
32°F
NE 7 mph
Precip.
0%
02.01
fri
Day
41°F
E 6 mph
Precip.
0%
Night
34°F
E 4 mph
Precip.
0%
03.01
sat
Day
43°F
N 4 mph
Precip.
0%
Night
37°F
NE 5 mph
Precip.
0%
04.01
sun
Day
48°F
NE 8 mph
Precip.
0%
Night
46°F
SE 12 mph
Precip.
0%
05.01
mon
Day
36°F
S 12 mph
Precip.
0%
Night
32°F
SW 4 mph
Precip.
0%

Sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 41.6°F. The highest and lowest sea temperatures during the month were 46.9°F and 37.4°F.

Sea water temperature in January, °F

Show year:
2025
2024
2023

The average sea water temperature in January of 2025 was 35.4°F. The highest and lowest sea temperatures during the month were 41.7°F and 31.8°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

Sunniest months:
November 17 days
October 16 days
September 15 days
Warmest months:
July 85.5 °F
August 82.4 °F
June 79.8 °F
Warmest sea temp:
July 80.8 °F
August 80.0 °F
September 74.5 °F
Coldest months:
January 39.1 °F
February 42.3 °F
December 43.9 °F
Rainiest months:
July 3 days
August 3 days
April 3 days
Windiest months:
March 9.2 mph
April 8.8 mph
January 8.4 mph

New Castle on a weather map

New Castle
+37°F
E 6 mph
Feels like: +34°F
Precip.: 0%
Places in USA:
Name
°F
+37°F
+73°F
+73°F
+59°F
+59°F
+70°F
+75°F
+68°F
+36°F
+61°F
+57°F
+66°F
+64°F
+70°F
+39°F
24 Hours Forecast
New Castle
Local time: 23:09
December 24, wednesday
0000
37°F
E
6 mph
0300
36°F
E
7 mph
0600
36°F
SE
14 mph
0900
37°F
SE
14 mph
1200
45°F
SE
14 mph
1500
45°F
SE
12 mph
1800
39°F
SE
6 mph
2100
36°F
S
4 mph
Units of measurement: °C / °F