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
The transition from July to August brings an average high-temperature of a still moderately hot 75.7°F (24.3°C), barely different from July's 77.5°F (25.3°C). During the month of August, Foster City's nighttime temperature lowers to an average of 55.9°F (13.3°C).Humidity
The average relative humidity in August in Foster City is 79%.Rainfall
In Foster City, in August, it is raining for 14 days, with typically 1.89" (48mm) of accumulated precipitation. In Foster City, during the entire year, the rain falls for 137.4 days and collects up to 22.83" (580mm) of precipitation.Snowfall
June through September are months without snowfall in Foster City.Daylight
The average length of the day in August is 14h and 5min.On the first day of August in Foster City, sunrise is at 5:34 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:11 am and sunset at 7:30 pm CDT.
Sunshine
In Foster City, Michigan, the average sunshine in August is 9.5h.UV index
The months with the highest UV index in Foster City 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 average individuals.Note: In August, a daily maximum UV index of 5 leads to the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What are the temperatures in Foster City in August?
What is the average humidity in August in Foster City?
How much does it rain in Foster City in August?
When it does not snow in Foster City?
What is the average length of the day in August in Foster City?
When are sunrise and sunset in August in Foster City?
How long on average sun shines in August in Foster City?
When is the highest UV index in Foster City?
What is the UV index intensity in August in Foster City?
Average temperature in August
Foster City, MI
- Average high temperature in August: 75.7°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (21°F).
- Average low temperature in August: 55.9°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).
Average pressure in August
Foster City, MI
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Foster City, MI
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in August
Foster City, MI
- Average humidity in August: 79%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (72%).
Average rainfall in August
Foster City, MI
- Average rainfall in August: 1.89"
The wettest month (with the highest rainfall) is June (2.6").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in August
Foster City, MI
- Average rainfall days in August: 14 days
The months with the highest number of rainy days are May, June and July (15.3 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in August
Foster City, MI
- Average snowfall in August: 0"
The month with the highest snowfall is February (9.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Foster City, MI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Foster City, MI
- Average daylight in August: 14h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in August: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in August
Foster City, MI
- Average sunshine days in August: 13.3 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in August
Foster City, 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, March, November and December (UV index 1).
Average cloud cover in August
Foster City, MI
- Average cloud cover in August: 39
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in August
Foster City, MI
- Average visibility in August: 5mi
The months with the highest visibility are May, June, October and November (6mi).
The month with the lowest visibility is February (4mi).
Foster City, Michigan, USA
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