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
In Castalia, stepping into May brings a temperature increase, moving up from April's cool 50.5°F (10.3°C) to an enjoyable 61.3°F (16.3°C). During May, Castalia experiences an average low-temperature of 51.4°F (10.8°C) at night.Humidity
The average relative humidity in May in Castalia is 79%.Rainfall
In Castalia, in May, it is raining for 17.8 days, with typically 4.21" (107mm) of accumulated precipitation. Throughout the year, there are 160.4 rainfall days, and 32.99" (838mm) of precipitation is accumulated.Snowfall
In Castalia, snow does not fall in May through October.Daylight
In Castalia, Ohio, the average length of the day in May is 14h and 32min.On the first day of May in Castalia, sunrise is at 6:27 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 8:57 pm EDT.
Sunshine
In May, the average sunshine is 9.1h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 5 during May translates into the following directions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Castalia in May?
What is the average humidity in May in Castalia?
How much does it rain in Castalia in May?
When it does not snow in Castalia?
Does it snow in Castalia in May?
How many hours of daylight does Castalia have in May?
When are sunrise and sunset in May in Castalia?
How many hours of sunshine does Castalia have in May?
What is the UV index reading in May in Castalia?
Average temperature in May
Castalia, OH
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in May
Castalia, OH
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Castalia, OH
- Average wind speed in May: 9.3mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in May
Castalia, OH
- Average humidity in May: 79%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in May
Castalia, OH
- Average rainfall in May: 4.21"
The wettest month (with the highest rainfall) is June (4.41").
The driest months (with the least rainfall) are February and December (1.61").
Average rainfall days in May
Castalia, OH
- Average rainfall days in May: 17.8 days
The month with the highest number of rainy days is May (17.8 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in May
Castalia, OH
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Castalia, OH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Castalia, OH
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in May
Castalia, OH
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is March (14.1 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in May
Castalia, OH
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Castalia, OH
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in May
Castalia, OH
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Castalia, Ohio, USA
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