May weather forecastPetroleum, OH
May
Weather in May
The last month of the spring, May, is an agreeable month in Petroleum, Ohio, with an average temperature varying between 70°F (21.1°C) and 49.3°F (9.6°C).Temperature
Petroleum's transition into May brings a rise in the average high-temperature, moving from a mild 57.6°F (14.2°C) in April to a pleasant 70°F (21.1°C). An average nighttime temperature of 49.3°F (9.6°C) is recorded during May.Humidity
May, July and August, with an average relative humidity of 78%, are the least humid months.Rainfall
In Petroleum, during May, the rain falls for 19.5 days and regularly aggregates up to 3.31" (84mm) of precipitation. Throughout the year, there are 182.1 rainfall days, and 34.8" (884mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.4 snowfall days, in May, Petroleum aggregates 0.16" (4mm) of snow. In Petroleum, Ohio, during the entire year, snow falls for 76.4 days and aggregates up to 31.69" (805mm) of snow.Daylight
In May, the average length of the day is 14h and 31min.On the first day of the month, sunrise is at 6:18 am and sunset at 8:19 pm. On the last day of May, sunrise is at 5:51 am and sunset at 8:48 pm EDT.
Sunshine
In May, the average sunshine is 8.6h.UV index
In Petroleum, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 5 during May translates into the following directions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Petroleum, OH
- Average high temperature in May: 70°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in May: 49.3°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in May
Petroleum, OH
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Petroleum, OH
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (5mph).
Average humidity in May
Petroleum, OH
- Average humidity in May: 78%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are May, July and August (78%).
Average rainfall in May
Petroleum, OH
- Average rainfall in May: 3.31"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in May
Petroleum, OH
- Average rainfall days in May: 19.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in May
Petroleum, OH
- Average snowfall in May: 0.16"
The month with the highest snowfall is January (8.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Petroleum, OH
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Petroleum, OH
- Average daylight in May: 14h and 30min
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 18min).
- Average sunshine in May: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in May
Petroleum, OH
- Average sunshine days in May: 10.1 days
The month with the most sunshine days is September (12.7 days).
The month with the least sunshine days is February (6 days).
Average UV index in May
Petroleum, OH
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Petroleum, OH
- Average cloud cover in May: 46
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in May
Petroleum, OH
- Average visibility in May: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
