The most pleasant months of the year for San Dimas are May, April and October. In San Dimas, there are 6 comfortable months with high temperatures in the range of 70-85°. August is the hottest month for San Dimas with an average high temperature of 92.2°, which ranks it as about average compared to other places in California. Any measurable snowfall is a rare occurance in San Dimas. There are few days during the summer when the humidity becomes unpleasant.
Today's Weather - San Dimas, CA
12 AM PST
|7 DAY FORECAST||DESCRIPTION||HIGH/LOW||WIND|
|Overnight||Patchy Fog||63° / 86°||SE 0 to 5 mph|
|Friday Night||Mostly Clear||63° / 92°||SSW 0 to 10 mph|
|Saturday Night||Clear||63° / 93°||WSW 0 to 5 mph|
|Sunday Night||Mostly Clear||64° / 92°||SW 0 to 10 mph|
|Monday Night||Mostly Clear||64° / 91°||SW 0 to 10 mph|
|Tuesday Night||Clear||65° / 90°||SW 0 to 10 mph|
|Wednesday Night||Clear||65° / 91°||SW 0 to 10 mph|
Summer High: the July high is around 91 degrees
Winter Low: the January low is 45
Rain: averages 19 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for the San Dimas area is 8.9 (10=best), which means it is more comfortable than most places in California.
8.9 / 10
A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.
Average Monthly High and Low (°F)
Hot, Freezing, Rainy, Snowy Days: San Dimas
YOU SHOULD KNOW
Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.
Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.
Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.