Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May sees a marginal temperature increase, moving from a pleasant 72.9°F (22.7°C) in April to a warm 81°F (27.2°C). New Castle records an average temperature drop to a mild 60.6°F (15.9°C) in May.Heat index
May's heat index is calculated to be a hot 86°F (30°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.Remember that heat index calculations are made for conditions in the shade with light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
In May, the average relative humidity is 74%.Rainfall
In New Castle, in May, it is raining for 15.8 days, with typically 3.03" (77mm) of accumulated precipitation. Throughout the year, there are 173.8 rainfall days, and 39.41" (1001mm) of precipitation is accumulated.Snowfall
In New Castle, snow does not fall in April through October.Daylight
The average length of the day in May is 13h and 55min.On the first day of the month, sunrise is at 5:57 am and sunset at 7:30 pm. On the last day of May, sunrise is at 5:37 am and sunset at 7:52 pm CDT.
Sunshine
In New Castle, the average sunshine in May is 10.1h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
When is the highest UV index?
What is the UV index reading in May?
Average temperature in May
New Castle, AL
- Average high temperature in May: 81°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (50.7°F).
- Average low temperature in May: 60.6°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in May
New Castle, AL
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in May
New Castle, AL
- Average wind speed in May: 5.7mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).
Average humidity in May
New Castle, AL
- Average humidity in May: 74%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
New Castle, AL
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is December (4.09").
The driest month (with the least rainfall) is October (2.09").
Average rainfall days in May
New Castle, AL
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is July (21.7 days).
The month with the least rainy days is November (9.1 days).
Average snowfall in May
New Castle, AL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
New Castle, AL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
New Castle, AL
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in May: 10h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
New Castle, AL
- Average sunshine days in May: 13.9 days
The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in May
New Castle, AL
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
New Castle, AL
- Average cloud cover in May: 32
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in May
New Castle, AL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
New Castle, Alabama, USA
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