Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
San Dimas, California, notes an average high-temperature of a hot 88.2°F (31.2°C) in July, displaying minor variation from June. From the heights of the July heat, San Dimas records a mean nighttime low of 63.3°F (17.4°C).Heat index
For July, the heat index is calculated to be a tropical 91.4°F (33°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In San Dimas, the average relative humidity in July is 48%.Rainfall
In San Dimas, in July, it is raining for 3.5 days, with typically 0.2" (5mm) 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 July is 14h and 10min.On the first day of July in San Dimas, sunrise is at 5:43 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 7:52 pm PDT.
Sunshine
The months with the most sunshine in San Dimas are June and July, with an average of 12.1h of sunshine.UV index
The months with the highest UV index in San Dimas 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 exposure to the Sun's UV rays for average individuals.Note: In July, the UV index of 7 transforms into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
How hot is it in San Dimas in July?
What is the average humidity in July in San Dimas?
How much does it rain in San Dimas in July?
How many hours of daylight does San Dimas have in July?
When is the sunrise / sunset in July in San Dimas?
What is the month with the most sunshine in San Dimas?
How many hours of sunshine does San Dimas have in July?
When is the highest UV index in San Dimas?
What is the UV index reading in July in San Dimas?
Average temperature in July
San Dimas, CA
- Average high temperature in July: 88.2°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 July: 63.3°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 July
San Dimas, CA
- Average pressure in July: 29.9"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 July
San Dimas, CA
- Average wind speed in July: 5mph
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 July
San Dimas, CA
- Average humidity in July: 48%
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 July
San Dimas, CA
- Average rainfall in July: 0.2"
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 July
San Dimas, CA
- Average rainfall days in July: 3.5 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 July /
Average sunshine in July
San Dimas, CA
- Average daylight in July: 14h and 1min
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 July: 12h and 1min
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 July
San Dimas, CA
- Average sunshine days in July: 25 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 July
San Dimas, CA
- Average UV index in July: 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 July
San Dimas, CA
- Average cloud cover in July: 6
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 July
San Dimas, CA
- Average visibility in July: 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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