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
Decatur's transition into May brings a rise in the average high-temperature, moving from a refreshing 59°F (15°C) in April to a pleasant 70.7°F (21.5°C). Decatur's nighttime temperature in May drops to an average of 54°F (12.2°C).Humidity
In May, the average relative humidity in Decatur is 77%.Rainfall
May is the month with the most rainfall in Decatur. Rain falls for 18.3 days and accumulates 3.03" (77mm) of precipitation.Snowfall
May through September are months without snowfall in Decatur, Indiana.Daylight
In Decatur, Indiana, the average length of the day in May is 14h and 29min.On the first day of the month, sunrise is at 6:36 am and sunset at 8:36 pm. On the last day of May, sunrise is at 6:10 am and sunset at 9:04 pm EDT.
Sunshine
In Decatur, the average sunshine in May is 8.6h.UV index
In Decatur, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The UV index of 5 in May translates into these instructions:
Take necessary precautions - Defending against sun damage is advocated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What is the average May temperature in Decatur?
What is the average humidity in May in Decatur?
What is the rainiest month in Decatur?
How much does it rain in Decatur in May?
When it does not snow in Decatur?
Does it snow in Decatur in May?
How many hours of daylight does Decatur have in May?
When 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, IN
- Average high temperature in May: 70.7°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 (31.3°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in May
Decatur, IN
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Decatur, IN
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Decatur, IN
- Average humidity in May: 77%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Decatur, IN
- Average rainfall in May: 3.03"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in May
Decatur, IN
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in May
Decatur, IN
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Decatur, IN
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Decatur, IN
- Average daylight in May: 14h and 3min
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 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Decatur, IN
- Average sunshine days in May: 10.2 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is June (10 days).
Average UV index in May
Decatur, IN
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Decatur, 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 32).
Average visibility in May
Decatur, IN
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
Decatur, Indiana, USA
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