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 brings a rise in Dayton's average high-temperature, moving from a mild 58.6°F (14.8°C) in April to an agreeable 69.4°F (20.8°C). Throughout the month of May, Dayton witnesses an average low-temperature of 52.9°F (11.6°C).Humidity
The average relative humidity in May is 74%.Rainfall
The month with the most rainfall in Dayton is May, when the rain falls for 16.1 days and typically aggregates up to 4.06" (103mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in Dayton. During 0.3 snowfall days, in May, Dayton aggregates 0.24" (6mm) of snow. In Dayton, Iowa, during the entire year, snow falls for 37.8 days and aggregates up to 15.39" (391mm) of snow.Daylight
In Dayton, the average length of the day in May is 14h and 37min.On the first day of May in Dayton, sunrise is at 6:10 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:45 pm CDT.
Sunshine
In May, the average sunshine in Dayton, Iowa, is 8.4h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
What is the usual temperature for Dayton in May?
What is the average humidity in May in Dayton?
What is the rainiest month in Dayton?
How many days does it rain in May in Dayton?
What is the last month it snows in Dayton?
How many hours of daylight does Dayton have in May?
When are sunrise and sunset in May in Dayton?
How long on average sun shines in May in Dayton?
How high is the UV index in May in Dayton?
Average temperature in May
Dayton, IA
- Average high temperature in May: 69.4°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 (26.8°F).
- Average low temperature in May: 52.9°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in May
Dayton, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Dayton, IA
- Average wind speed in May: 9.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in May
Dayton, IA
- Average humidity in May: 74%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Dayton, IA
- Average rainfall in May: 4.06"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in May
Dayton, IA
- Average rainfall days in May: 16.1 days
The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in May
Dayton, IA
- Average snowfall in May: 0.24"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Dayton, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Dayton, IA
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Dayton, IA
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in May
Dayton, IA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in May
Dayton, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in May
Dayton, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Dayton, Iowa, USA
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