Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August is marked by an average high-temperature of a still warm 77.5°F (25.3°C), almost identical to the preceding month. During the month of August, the temperature generally drops to a low average of 59.7°F (15.4°C).Humidity
The average relative humidity in August is 81%.Rainfall
In Napoleon, Michigan, in August, during 15.5 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 144.6 rainfall days, and 20.2" (513mm) of precipitation is accumulated.Snowfall
In Napoleon, snow does not fall in June through September.Daylight
In Napoleon, the average length of the day in August is 13h and 50min.On the first day of the month, sunrise is at 6:30 am and sunset at 8:55 pm. On the last day of August, sunrise is at 7:02 am and sunset at 8:11 pm EDT.
Sunshine
In August, the average sunshine is 9.6h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Napoleon have in August?
What time are sunrise and sunset in August?
How long on average sun shines in August?
When is the highest UV index?
How high is the UV index in August in Napoleon?
Average temperature in August
Napoleon, MI
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in August: 59.7°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in August
Napoleon, MI
- Average pressure in August: 29.98"Hg
The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Napoleon, MI
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in August
Napoleon, MI
- Average humidity in August: 81%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall in August
Napoleon, MI
- Average rainfall in August: 1.85"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in August
Napoleon, MI
- Average rainfall days in August: 15.5 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in August
Napoleon, MI
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Napoleon, MI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Napoleon, MI
- Average daylight in August: 13h and 5min
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 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in August
Napoleon, MI
- Average sunshine days in August: 11.8 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in August
Napoleon, MI
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Napoleon, MI
- Average cloud cover in August: 34
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in August
Napoleon, MI
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).
Napoleon, Michigan, USA
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