August weather forecastRochester, MI
August
Weather in August
August, the last month of the summer in Rochester, is another warm month, with an average temperature fluctuating between 62.2°F (16.8°C) and 78.4°F (25.8°C).Temperature
Transitioning from July to August, Rochester observes an average high-temperature of a still warm 78.4°F (25.8°C), differing subtly from the previous month. During August, Rochester experiences an average low-temperature of 62.2°F (16.8°C) at night.Humidity
The months with the lowest humidity are April, May, July and August, with an average relative humidity of 75%.Rainfall
In Rochester, during August, the rain falls for 15 days and regularly aggregates up to 1.61" (41mm) of precipitation. In Rochester, Michigan, during the entire year, the rain falls for 146.2 days and collects up to 18.5" (470mm) of precipitation.Snowfall
In Rochester, Michigan, snow does not fall in June through September.Daylight
In Rochester, Michigan, the average length of the day in August is 13h and 52min.On the first day of the month, sunrise is at 6:25 am and sunset at 8:52 pm. On the last day of August, sunrise is at 6:57 am and sunset at 8:08 pm EDT.
Sunshine
In August, the average sunshine is 10.3h.UV index
The months with the highest UV index in Rochester are July and August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: In August, the maximum UV index of 6 suggests these recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Rochester, MI
- Average high temperature in August: 78.4°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in August: 62.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in August
Rochester, MI
- Average pressure in August: 29.97"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
Rochester, MI
- Average wind speed in August: 6.7mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in August
Rochester, MI
- Average humidity in August: 75%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, May, July and August (75%).
Average rainfall in August
Rochester, MI
- Average rainfall in August: 1.61"
The wettest month (with the highest rainfall) is May (2.28").
The driest months (with the least rainfall) are February and December (1.02").
Average rainfall days in August
Rochester, MI
- Average rainfall days in August: 15 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in August
Rochester, MI
- Average snowfall in August: 0"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Rochester, MI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Rochester, MI
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 10h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in August
Rochester, MI
- Average sunshine days in August: 13.5 days
The month with the most sunshine days is November (14.9 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in August
Rochester, MI
- Average UV index in August: 6
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Rochester, MI
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in August
Rochester, 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).
