August weather forecastDecatur, MI
August
Weather in August
The last month of the summer, August, is another warm month in Decatur, Michigan, with an average temperature varying between 60.6°F (15.9°C) and 78.4°F (25.8°C).Temperature
The average high-temperature during August registers at a still moderately hot 78.4°F (25.8°C), maintaining a close resemblance to the previous month. During the month of August, an average temperature of 60.6°F (15.9°C) is noted during the nights.Humidity
In Decatur, the average relative humidity in August is 81%.Rainfall
In Decatur, during August, the rain falls for 13.8 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Decatur, during the entire year, the rain falls for 139.4 days and collects up to 20" (508mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Decatur, the average length of the day in August is 13h and 50min.On the first day of August, sunrise is at 6:37 am and sunset at 9:02 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 8:18 pm EDT.
Sunshine
In August, the average sunshine in Decatur is 9.5h.UV index
The months with the highest UV index are June and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 6 during August translates into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Decatur, MI
- Average high temperature in August: 78.4°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 August: 60.6°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 August
Decatur, MI
- Average pressure in August: 29.98"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 August
Decatur, MI
- Average wind speed in August: 6.3mph
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 August
Decatur, MI
- Average humidity in August: 81%
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 August
Decatur, MI
- Average rainfall in August: 1.65"
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 August
Decatur, MI
- Average rainfall days in August: 13.8 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 August
Decatur, MI
- Average snowfall in August: 0"
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 August
Decatur, MI
- Average snowfall days in August: 0 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 August /
Average sunshine in August
Decatur, MI
- Average daylight in August: 13h and 48min
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 August: 9h and 30min
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 August
Decatur, MI
- Average sunshine days in August: 13.7 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 August
Decatur, MI
- Average UV index in August: 6
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 August
Decatur, MI
- Average cloud cover in August: 32
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 August
Decatur, MI
- Average visibility in August: 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).
