August weather forecastAlpena, MI
August
Weather in August
August upholds the warm conditions in Alpena as the temperatures marginally drop to 73.9°F (23.3°C). The sea temperature peaks at 64°F (17.8°C), inviting both locals and visitors to partake in water-bound activities. The diminishing daylight hours seem to pave the way for the forthcoming fall season. Gusts of wind from Lake Huron mildly intensify, subtly hinting at the approaching seasonal shift. The sustained sunlit hours and warm temperatures underline a late summer climate.Temperature
Alpena, Michigan, commences August with an average high-temperature of a still moderately hot 73.9°F (23.3°C), maintaining a close resemblance to the previous month. In Alpena, an average temperature of 60.3°F (15.7°C) is noted during August nights.Humidity
In Alpena, the average relative humidity in August is 77%.Rainfall
In August, in Alpena, the rain falls for 12.2 days. Throughout August, 1.22" (31mm) of precipitation is accumulated. Throughout the year, there are 119.4 rainfall days, and 13.9" (353mm) of precipitation is accumulated.Snowfall
In Alpena, snow does not fall in June through September.Ocean temperature
August is the month with the warmest seawater, with an average ocean temperature of 64.4°F (18°C).Note: For the majority, swimming in 64.4°F (18°C) does not offer a pleasant experience. Below 69.8°F (21°C), the difficulty in controlling breathing escalates.
Daylight
In Alpena, the average length of the day in August is 14h and 1min.On the first day of the month, sunrise is at 6:19 am and sunset at 9:00 pm. On the last day of August, sunrise is at 6:55 am and sunset at 8:12 pm EDT.
Sunshine
The average sunshine in August is 9.9h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 during August translates into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Alpena, MI
- Average high temperature in August: 73.9°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in August: 60.3°F
The month with the highest average low temperature is August (60.3°F).
The coldest months (with the lowest average low temperature) are January and February (18°F).
Average pressure in August
Alpena, MI
- Average pressure in August: 29.95"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Alpena, MI
- Average wind speed in August: 8mph
The windiest months (with the highest average wind speed) are January and December (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in August
Alpena, MI
- Average humidity in August: 77%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is May (73%).
Average rainfall in August
Alpena, MI
- Average rainfall in August: 1.22"
The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in August
Alpena, MI
- Average rainfall days in August: 12.2 days
The month with the highest number of rainy days is October (14.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in August
Alpena, MI
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Alpena, MI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (20.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in August
Alpena, MI
- Average sea temperature in August: 64°F
The best month for swimming (with the highest average sea temperature) is August (64°F).
The coldest months (with the lowest average sea temperature) are February, March and April (36°F).
Average daylight in August /
Average sunshine in August
Alpena, MI
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in August: 9h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in August
Alpena, MI
- Average sunshine days in August: 16.4 days
The month with the most sunshine days is May (17.8 days).
The month with the least sunshine days is January (8.4 days).
Average UV index in August
Alpena, MI
- Average UV index in August: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in August
Alpena, MI
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in August
Alpena, MI
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
