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
An increase in the average high-temperature marks May, moving from April's refreshing 63.9°F (17.7°C) to a moderately hot 73.8°F (23.2°C). Decatur records an average temperature drop to a cool 55°F (12.8°C) in May.Humidity
In May, the average relative humidity in Decatur is 79%.Rainfall
May is the month with the most rainfall. Rain falls for 18.7 days and accumulates 3.43" (87mm) of precipitation.Snowfall
In Decatur, snow does not fall in May through September.Daylight
In May, the average length of the day in Decatur is 14h and 19min.On the first day of May in Decatur, sunrise is at 6:36 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 8:53 pm EDT.
Sunshine
The average sunshine in May is 9h.UV index
In May, the average daily maximum UV index in Decatur, Ohio, is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 5 in May suggests the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Decatur in May?
What is the average humidity in May in Decatur?
What is the rainiest month in Decatur?
How many days does it rain in May in Decatur?
When it does not snow in Decatur?
Does it snow in Decatur in May?
How many hours of daylight does Decatur have in May?
What time are sunrise and sunset in May in Decatur?
How long on average sun shines in May in Decatur?
How high is the UV index in May in Decatur?
Average temperature in May
Decatur, OH
- Average high temperature in May: 73.8°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in May: 55°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in May
Decatur, OH
- Average pressure in May: 29.99"Hg
The months with the highest atmospheric pressure are January and November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Decatur, OH
- Average wind speed in May: 6.8mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in May
Decatur, OH
- Average humidity in May: 79%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September, October and November (76%).
Average rainfall in May
Decatur, OH
- Average rainfall in May: 3.43"
The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in May
Decatur, OH
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (10.2 days).
Average snowfall in May
Decatur, OH
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Decatur, OH
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Decatur, OH
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Decatur, OH
- Average sunshine days in May: 9.8 days
The month with the most sunshine days is October (17.5 days).
The months with the least sunshine days are May and June (9.8 days).
Average UV index in May
Decatur, 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
Decatur, OH
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in May
Decatur, OH
- Average visibility in May: 5mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
Decatur, Ohio, USA
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