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
The average high-temperature increases in May, moving from an enjoyable 61.3°F (16.3°C) in April to a pleasant 71.2°F (21.8°C). Collinsville, in May, witnesses an average low-temperature of 54.7°F (12.6°C).Humidity
The average relative humidity in May is 81%.Rainfall
May is the month with the most rainfall. Rain falls for 20.5 days and accumulates 4.09" (104mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 22min.On the first day of the month, sunrise is at 6:38 am and sunset at 8:32 pm. On the last day of May, sunrise is at 6:13 am and sunset at 8:59 pm EDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In May, the maximum UV index of 5 suggests these recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Stay sun-safe with clothing that is both closely woven and worn loosely. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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?
What is the wettest month?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Collinsville have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Collinsville, OH
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in May: 54.7°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in May
Collinsville, OH
- Average pressure in May: 29.98"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Collinsville, OH
- Average wind speed in May: 7.6mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Collinsville, OH
- Average humidity in May: 81%
The months with the highest relative humidity are January, February and December (82%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in May
Collinsville, OH
- Average rainfall in May: 4.09"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in May
Collinsville, OH
- Average rainfall days in May: 20.5 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is February (9.2 days).
Average snowfall in May
Collinsville, OH
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Collinsville, OH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Collinsville, OH
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Collinsville, OH
- Average sunshine days in May: 8.8 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is May (8.8 days).
Average UV index in May
Collinsville, OH
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Collinsville, OH
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Collinsville, OH
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Collinsville, Ohio, USA
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