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
The highest temperatures are recorded in August, with averages reaching a high of 92.1°F (33.4°C) and a low of 67.3°F (19.6°C).Humidity
The least humid month in Fontana is August, with an average relative humidity of 39%.Rainfall
In Fontana, California, in August, during 1.7 rainfall days, 0.08" (2mm) of precipitation is typically accumulated. In Fontana, California, during the entire year, the rain falls for 48.1 days and collects up to 6.89" (175mm) of precipitation.Snowfall
In Fontana, snow does not fall in January, March through December.Daylight
In Fontana, the average length of the day in August is 13h and 23min.On the first day of August in Fontana, sunrise is at 6:01 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:16 pm PDT.
Sunshine
The months with the most sunshine in Fontana are June through August, with an average of 12.1h of sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In August, the UV index of 7 transforms into the following advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. 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 is the hottest time of year in Fontana?
How hot is it in Fontana in August?
What is the least humid month in Fontana?
What is the average humidity in August in Fontana?
How many days does it rain in August in Fontana?
When it does not snow in Fontana?
What is the average length of the day in August in Fontana?
When are sunrise and sunset in August in Fontana?
What is the month with the most sunshine in Fontana?
How many hours of sunshine does Fontana have in August?
What are the months with the highest UV index in Fontana?
What is the UV index reading in August in Fontana?
Average temperature in August
Fontana, CA
- Average high temperature in August: 92.1°F
The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is December (60.8°F).
- Average low temperature in August: 67.3°F
The month with the highest average low temperature is August (67.3°F).
The coldest months (with the lowest average low temperature) are February and December (44.2°F).
Average pressure in August
Fontana, CA
- Average pressure in August: 29.87"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in August
Fontana, CA
- Average wind speed in August: 4.8mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in August
Fontana, CA
- Average humidity in August: 39%
The months with the highest relative humidity are February, March and May (52%).
The month with the lowest relative humidity is August (39%).
Average rainfall in August
Fontana, CA
- Average rainfall in August: 0.08"
The wettest month (with the highest rainfall) is February (1.57").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in August
Fontana, CA
- Average rainfall days in August: 1.7 days
The month with the highest number of rainy days is March (7.5 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days in August
Fontana, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in August /
Average sunshine in August
Fontana, 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 1min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in August
Fontana, CA
- Average sunshine days in August: 27.2 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.1 days).
Average UV index in August
Fontana, 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
Fontana, CA
- Average cloud cover in August: 4
The months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in August
Fontana, 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).
Fontana, California, USA
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