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
August is San Dimas's warmest month, registering average high temperatures of 89.4°F (31.9°C) and lows of 64.9°F (18.3°C).Heat index
The heat index for August is calculated to be a tropical 91.4°F (33°C). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
Humidity
The months with the lowest humidity are August and November, with an average relative humidity of 45%.Rainfall
In San Dimas, in August, it is raining for 1.8 days, with typically 0.12" (3mm) of accumulated precipitation. Throughout the year, there are 45.2 rainfall days, and 6.5" (165mm) of precipitation is accumulated.Daylight
In San Dimas, the average length of the day in August is 13h and 23min.On the first day of August in San Dimas, sunrise is at 6:03 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:17 pm PDT.
Sunshine
The average sunshine in August in San Dimas, California, is 12h.UV index
July and August, with an average maximum UV index of 7, are months with the highest UV index in San Dimas. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 7 during August translates into the following guidance:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What part of the year is the hottest in San Dimas?
How hot is August in San Dimas?
What is the least humid month in San Dimas?
What is the average humidity in August in San Dimas?
How many days does it rain in August in San Dimas?
What is the average length of the day in August in San Dimas?
When are sunrise and sunset in August in San Dimas?
How many hours of sunshine does San Dimas have in August?
When is the highest UV index in San Dimas?
What is the UV index reading in August in San Dimas?
Average temperature in August
San Dimas, CA
- Average high temperature in August: 89.4°F
The warmest month (with the highest average high temperature) is August (89.4°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in August: 64.9°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is December (45.5°F).
Average pressure in August
San Dimas, CA
- Average pressure in August: 29.88"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in August
San Dimas, CA
- Average wind speed in August: 4.7mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in August
San Dimas, CA
- Average humidity in August: 45%
The months with the highest relative humidity are March and May (55%).
The months with the lowest relative humidity are August and November (45%).
Average rainfall in August
San Dimas, CA
- Average rainfall in August: 0.12"
The wettest month (with the highest rainfall) is February (1.46").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
San Dimas, CA
- Average rainfall days in August: 1.8 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (1.2 days).
Average daylight in August /
Average sunshine in August
San Dimas, CA
- Average daylight in August: 13h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in August: 12h and 0min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 7h and 0min).
Average sunshine days in August
San Dimas, CA
- Average sunshine days in August: 26.9 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (22 days).
Average UV index in August
San Dimas, CA
- Average UV index in August: 7
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in August
San Dimas, CA
- Average cloud cover in August: 5
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in August
San Dimas, 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).
San Dimas, California, USA
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