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 shift from April to May sees an increase in the average high-temperature, transitioning from a fresh 55.2°F (12.9°C) to a comfortable 67.1°F (19.5°C). The temperature lowers to an average of 49.8°F (9.9°C) during May nights.Humidity
In Decatur, the average relative humidity in May is 80%.Rainfall
In May, in Decatur, the rain falls for 15.4 days. Throughout May, 2.48" (63mm) of precipitation is accumulated. Throughout the year, in Decatur, Michigan, there are 139.4 rainfall days, and 20" (508mm) of precipitation is accumulated.Snowfall
Months with snowfall in Decatur, Michigan, are January through May, October through December. May is the last month it regularly snows in Decatur. During 0.2 snowfall days, in May, Decatur aggregates 0.08" (2mm) of snow. In Decatur, during the entire year, snow falls for 63 days and aggregates up to 14.45" (367mm) of snow.Daylight
In Decatur, Michigan, the average length of the day in May is 14h and 35min.On the first day of the month, sunrise is at 6:38 am and sunset at 8:43 pm. On the last day of May, sunrise is at 6:10 am and sunset at 9:12 pm EDT.
Sunshine
In Decatur, the average sunshine in May is 8.4h.UV index
The average daily maximum UV index in May in Decatur is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. To protect against the Sun's most potent rays, avoid direct exposure around midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What are the temperatures in Decatur in May?
What is the average humidity in May in Decatur?
How many days does it rain in May in Decatur?
What is the last month it snows in Decatur?
What is the average length of the day in May in Decatur?
When is the sunrise / sunset in May in Decatur?
How long on average sun shines in May in Decatur?
What is the UV index reading in May in Decatur?
Average temperature in May
Decatur, MI
- Average high temperature in May: 67.1°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in May: 49.8°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in May
Decatur, MI
- Average pressure in May: 29.97"Hg
The months with the highest atmospheric pressure are January, March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Decatur, MI
- Average wind speed in May: 8.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in May
Decatur, MI
- Average humidity in May: 80%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in May
Decatur, MI
- Average rainfall in May: 2.48"
The wettest month (with the highest rainfall) is June (2.6").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in May
Decatur, MI
- Average rainfall days in May: 15.4 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in May
Decatur, MI
- Average snowfall in May: 0.08"
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
Decatur, MI
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Decatur, MI
- 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 12min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in May
Decatur, MI
- Average sunshine days in May: 12.7 days
The month with the most sunshine days is March (14.4 days).
The month with the least sunshine days is January (9.8 days).
Average UV index in May
Decatur, MI
- Average UV index in May: 5
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Decatur, MI
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in May
Decatur, MI
- 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).
Decatur, Michigan, USA
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