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 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
July and August represent the warmest period, with an average high-temperature of 80.1°F (26.7°C).Humidity
In August, the average relative humidity in Union City, California, is 65%.Rainfall
In Union City, rain does not fall in June through August.Daylight
The average length of the day in August is 13h and 34min.On the first day of August in Union City, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:38 pm PDT.
Sunshine
The average sunshine in August is 12h.UV index
In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 5 in August interprets into the following advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What time of the year is the hottest in Union City?
What is the temperature in August in Union City?
What is the average humidity in August in Union City?
What is the driest month in Union City?
Does it rain in Union City in August?
What is the average length of the day in August in Union City?
When is the sunrise / sunset in August in Union City?
How long on average sun shines in August in Union City?
How high is the UV index in August in Union City?
Average temperature in August
Union City, CA
- Average high temperature in August: 80.1°F
The warmest months (with the highest average high temperature) are July and August (80.1°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in August: 56.7°F
The months with the highest average low temperature are August and September (56.7°F).
The coldest month (with the lowest average low temperature) is December (43.7°F).
Average pressure in August
Union City, CA
- Average pressure in August: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in August
Union City, CA
- Average wind speed in August: 5.1mph
The windiest month (with the highest average wind speed) is May (6.4mph).
The calmest months (with the lowest average wind speed) are October and November (4.7mph).
Average humidity in August
Union City, CA
- Average humidity in August: 65%
The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are September and October (62%).
Average rainfall in August
Union City, CA
- Average rainfall in August: 0"
The wettest month (with the highest rainfall) is February (0.47").
The driest months (with the least rainfall) are June, July and August (0").
Average rainfall days in August
Union City, CA
- Average rainfall days in August: 0.4 days
The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is July (0.3 days).
Average daylight in August /
Average sunshine in August
Union City, CA
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in August
Union City, CA
- Average sunshine days in August: 30.4 days
The months with the most sunshine days are July and August (30.4 days).
The month with the least sunshine days is February (22.2 days).
Average UV index in August
Union City, CA
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in August
Union City, CA
- Average cloud cover in August: 7
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in August
Union City, CA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Union City, California, USA
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