World Resorts USA New Castle Weather

New Castle weather in July

Weather in New Castle: July

Average day temperature: 85.9°F
Average night temperature: 71.9°F
Sea water temperature: 80.7°F
Number of sunny days: 13 days
Day length: 14.3 - 14.9 hours
Number of rainy days: 3 days
Precipitation totals: 1.7 in.

Air temperature in July, °F

Show year:
2026
2025
2024

The highest day temperature during July of 2026 was 104°F. At the same time the lowest night temperature was 61°F. Daily and nightly averages during July were 88.1°F and 70.1°F.

Sea water temperature in New Castle in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 80.1°F. The highest and lowest sea temperatures during the month were 82.0°F and 76.1°F.

Sunny, partly cloudy and cloudy days

Mostly all days in July are sunny but cloudy days are also possible.

Precipitation total in July, in.

Precipitation total value in New Castle in July is 1.7 in. Other months of the year show relatively similar values.

Wind speed in July, mph

The average wind speed value in July is 5.8 mph It makes July lest windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in July is: 9.2.

Best time for vacation in New Castle

Sunniest months:
November 17 days
October 16 days
June 15 days
Warmest months:
July 85.9 °F
August 82.4 °F
June 80.5 °F
Warmest sea temp:
July 80.7 °F
August 80.0 °F
September 74.5 °F
Coldest months:
January 38.6 °F
February 41.6 °F
December 43.1 °F
Rainiest months:
July 3 days
August 3 days
June 2 days
Windiest months:
March 9.2 mph
April 8.7 mph
January 8.5 mph

New Castle on a weather map

New Castle
+72°F
S 5 mph
Feels like: +77°F
Precip.: 16%
Places in USA:
Name
°F
+63°F
+75°F
+77°F
+73°F
+66°F
+81°F
+73°F
+79°F
+68°F
+70°F
+59°F
+66°F
+77°F
+81°F
+75°F
24 Hours Forecast
New Castle
Local time: 03:43
August 15, saturday
0600
72°F
SW
6 mph
0900
73°F
SW
6 mph
1200
88°F
SW
4 mph
1500
88°F
SE
5 mph
1800
86°F
S
6 mph
2100
75°F
NW
7 mph
August 16, sunday
0000
72°F
N
6 mph
0300
72°F
N
5 mph
Units of measurement: °C / °F