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 temperature increase, moving from a mild 59.5°F (15.3°C) in April to an agreeable 71.1°F (21.7°C). Petroleum throughout May, experiences an average nighttime temperature of 54.3°F (12.4°C).Humidity
In May, the average relative humidity is 78%.Rainfall
May is the month with the most rainfall. Rain falls for 17.5 days and accumulates 2.24" (57mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May is 14h and 28min.On the first day of May, sunrise is at 6:38 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 9:04 pm EDT.
Sunshine
The average sunshine in May is 8.5h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the maximum UV index of 5 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Always opt for UVA and UVB-resistant sunglasses on radiant days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
What is the wettest month?
How much does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Petroleum have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Petroleum have in May?
How high is the UV index in May?
Average temperature in May
Petroleum, IN
- Average high temperature in May: 71.1°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 (31.6°F).
- Average low temperature in May: 54.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in May
Petroleum, IN
- Average pressure in May: 29.97"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Petroleum, IN
- Average wind speed in May: 8.4mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Petroleum, IN
- Average humidity in May: 78%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Petroleum, IN
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in May
Petroleum, IN
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in May
Petroleum, IN
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Petroleum, IN
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9.6 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, IN
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Petroleum, IN
- Average sunshine days in May: 11.3 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in May
Petroleum, IN
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Petroleum, IN
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in May
Petroleum, IN
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
Petroleum, Indiana, USA
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