August weather forecastCastella, CA
August
Weather in August
The last month of the summer, August, is another warm month in Castella, California, with an average temperature fluctuating between 84.7°F (29.3°C) and 51.4°F (10.8°C).Temperature
August ushers in an average high-temperature of a still moderately hot 84.7°F (29.3°C), aligning closely with the preceding month. A striking departure from daytime highs to an average low-temperature of 51.4°F (10.8°C) is witnessed during August.Heat index
In August, the average heat index is appraised at 84.2°F (29°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
August is the least humid month, with an average relative humidity of 44%.Rainfall
In August, the rain falls for 2.7 days. Throughout August, 0.28" (7mm) of precipitation is accumulated. In Castella, during the entire year, the rain falls for 113.4 days and collects up to 31.3" (795mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 46min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:25 pm. On the last day of August, sunrise is at 6:35 am and sunset at 7:42 pm PDT.
Sunshine
The average sunshine in August in Castella, California, is 12h.UV index
In Castella, California, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In August, the maximum UV index of 5 transforms into these recommendations:
Take precautions - Protection against sun damage is advised. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Castella, CA
- Average high temperature in August: 84.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (41°F).
- Average low temperature in August: 51.4°F
The months with the highest average low temperature are July and August (51.4°F).
The coldest month (with the lowest average low temperature) is December (26.8°F).
Average pressure in August
Castella, CA
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in August
Castella, CA
- Average wind speed in August: 4.1mph
The windiest month (with the highest average wind speed) is March (5.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in August
Castella, CA
- Average humidity in August: 44%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is August (44%).
Average rainfall in August
Castella, CA
- Average rainfall in August: 0.28"
The wettest month (with the highest rainfall) is March (5.55").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in August
Castella, CA
- Average rainfall days in August: 2.7 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (2.7 days).
Average snowfall in August
Castella, CA
- Average snowfall in August: 0"
The month with the highest snowfall is January (12.6").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Castella, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (6.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in August /
Average sunshine in August
Castella, CA
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in August
Castella, CA
- Average sunshine days in August: 25.7 days
The month with the most sunshine days is August (25.7 days).
The month with the least sunshine days is March (11.1 days).
Average UV index in August
Castella, 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, March, November and December (UV index 2).
Average cloud cover in August
Castella, CA
- Average cloud cover in August: 6
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in August
Castella, CA
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
