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 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
Fairfax's weather in August indicates an average high-temperature of a still agreeable 69.4°F (20.8°C), nearly consistent with the 68.5°F (20.3°C) of July. Fairfax reports a consistent average low-temperature of 56.1°F (13.4°C) throughout August nights.Humidity
August is the most humid month, with an average relative humidity of 78%.Rainfall
The months with the least rainfall are July and August Rain falls for 2.7 days and accumulates 0.08" (2mm) of rain.Snowfall
In Fairfax, snow does not fall in January through November.Daylight
The average length of the day in August is 13h and 35min.On the first day of August, sunrise is at 6:14 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:40 pm PDT.
Sunshine
In August, the average sunshine is 10.9h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 5 in August, converts into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are August temperatures?
What is the most humid month?
What is the average humidity in August?
What is the driest month?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Fairfax have in August?
When is the sunrise / sunset in August?
How many hours of sunshine does Fairfax have in August?
What are the months with the highest UV index?
What is the UV index intensity in August in Fairfax?
Average temperature in August
Fairfax, CA
- Average high temperature in August: 69.4°F
The warmest month (with the highest average high temperature) is September (70.9°F).
The month with the lowest average high temperature is December (55.2°F).
- Average low temperature in August: 56.1°F
The month with the highest average low temperature is September (56.3°F).
The coldest month (with the lowest average low temperature) is December (46°F).
Average pressure in August
Fairfax, 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
Fairfax, CA
- Average wind speed in August: 6.5mph
The windiest months (with the highest average wind speed) are April and May (8.3mph).
The calmest month (with the lowest average wind speed) is November (5.9mph).
Average humidity in August
Fairfax, CA
- Average humidity in August: 78%
The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in August
Fairfax, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is February (3.43").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in August
Fairfax, CA
- Average rainfall days in August: 2.7 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is July (2.3 days).
Average snowfall days in August
Fairfax, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
Fairfax, CA
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in August: 10h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in August
Fairfax, CA
- Average sunshine days in August: 23.4 days
The months with the most sunshine days are June and July (24.8 days).
The month with the least sunshine days is March (16.6 days).
Average UV index in August
Fairfax, CA
- Average UV index in August: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in August
Fairfax, CA
- Average cloud cover in August: 25
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility in August
Fairfax, 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).
Fairfax, California, USA
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