May weather forecastPetersburg, OH
May
Weather in May
The last month of the spring, May, is an agreeable month in Petersburg, Ohio, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 70.9°F (21.6°C).Temperature
The transition from April to May brings a temperature rise, with average high-temperatures increasing from a refreshing 59.4°F (15.2°C) to an agreeable 70.9°F (21.6°C). The mean low-temperature during May nights in Petersburg, Ohio, is a cool 50.2°F (10.1°C).Humidity
The average relative humidity in May is 78%.Rainfall
In May, the rain falls for 19.9 days. Throughout May, 3.31" (84mm) of precipitation is accumulated. In Petersburg, during the entire year, the rain falls for 178 days and collects up to 32.95" (837mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Petersburg. May is the last month it regularly snows. During 0.4 snowfall days, in May, Petersburg aggregates 0.16" (4mm) of snow. In Petersburg, during the entire year, snow falls for 68.8 days and aggregates up to 25.28" (642mm) of snow.Daylight
In May, the average length of the day is 14h and 29min.On the first day of May, sunrise is at 6:19 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:47 pm EDT.
Sunshine
In Petersburg, Ohio, the average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May in Petersburg is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 5 in May suggests the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Petersburg, OH
- Average high temperature in May: 70.9°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in May: 50.2°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in May
Petersburg, OH
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Petersburg, OH
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).
Average humidity in May
Petersburg, OH
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in May
Petersburg, OH
- Average rainfall in May: 3.31"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is November (2.2").
Average rainfall days in May
Petersburg, OH
- Average rainfall days in May: 19.9 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in May
Petersburg, OH
- Average snowfall in May: 0.16"
The month with the highest snowfall is January (6.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Petersburg, OH
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Petersburg, 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 42min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in May
Petersburg, OH
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is November (13.8 days).
The month with the least sunshine days is February (7.5 days).
Average UV index in May
Petersburg, 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
Petersburg, OH
- Average cloud cover in May: 45
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in May
Petersburg, OH
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).





