Weather in New Castle: May
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Average day temperature: | 69.0°F |
| Average night temperature: | 56.4°F | |
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Sea water temperature: | 61.7°F |
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Number of sunny days: | 11 days |
| Day length: | 13.9 - 14.8 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 0.8 in. | |
| more information | ||
14 days
forecast
forecast
| New Castle |
sea water
temperature
temperature
| New Castle |
Air temperature in May, °F
Show year:
2025
2024
2023
The highest day temperature during May of 2025 was 86°F. At the same time the lowest night temperature was 48°F. Daily and nightly averages during May were 70.7°F and 57.5°F.
Sea water temperature in New Castle in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 62.9°F. The highest and lowest sea temperatures during the month were 65.1°F and 61.0°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in New Castle in May is 0.8 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 7.7 mph
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 May is: 7.4.
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: 23:08
December 24, wednesday
0000
37°F
E
6 mph
6 mph
0300
36°F
E
7 mph
7 mph
0600
36°F
SE
14 mph
14 mph
0900
37°F
SE
14 mph
14 mph
1200
45°F
SE
14 mph
14 mph
1500
45°F
SE
12 mph
12 mph
1800
39°F
SE
6 mph
6 mph
2100
36°F
S
4 mph
4 mph
