June weather forecast
San Dimas, CA

englishespañol中文
Share

Weather in June

The first month of the summer, June, is also a moderately hot month in San Dimas, California, with an average temperature fluctuating between 82.9°F (28.3°C) and 57.7°F (14.3°C).

Temperature

The arrival of June witnesses a small shift in the average high-temperature, moving from 75.7°F (24.3°C) in May to a still moderately hot 82.9°F (28.3°C). In the face of high daytime temperatures, San Dimas witnesses a consistent average nighttime low of 57.7°F (14.3°C) during June.

Heat index

The heat index in June is calculated to be 84.2°F (29°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining 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. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

In June, the average relative humidity in San Dimas is 53%.

Rainfall

The month with the least rainfall is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.

Daylight

June has the longest days of the year in San Dimas, with an average of 14h and 24min of daylight.
On the first day of the month, sunrise is at 5:40 am and sunset at 7:57 pm. On the last day of June, in San Dimas, sunrise is at 5:43 am and sunset at 8:06 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

In San Dimas, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: During June, 6 as the daily maximum UV index converts into the following advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. 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. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
[Resources]

Frequently asked questions

How hot is June in San Dimas?

In San Dimas, 82.9°F (28.3°C) is the average high-temperature and 57.7°F (14.3°C) is the average low-temperature during June. In June, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 84.2°F (29°C).

What is the average humidity in June in San Dimas?

The average relative humidity in June in San Dimas is 53%.

What is the driest month in San Dimas?

The month with the least rainfall is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.

How much does it rain in San Dimas in June?

In San Dimas, during June, the rain falls for 1.2 days and regularly aggregates up to 0.04" (1mm) of precipitation.

When are the longest days in San Dimas?

The month with the longest days in San Dimas, California, is June, with an average of 14h and 24min of daylight.

How many hours of daylight does San Dimas have in June?

In June, the average day length is 14h and 23min.

What time are sunrise and sunset in June in San Dimas?

In June, on the first day of the month, sunrise is at 5:40 am and sunset at 7:57 pm. On the last day of the month, in San Dimas, California, sunrise is at 5:43 am and sunset at 8:06 pm PDT.

What is the month with the most sunshine in San Dimas?

June and July, with an average of 12.1h of sunshine, are months with the most sunshine in San Dimas, California.

How long on average sun shines in June in San Dimas?

In San Dimas, California, the average sunshine duration in June is 12.1h.

What is the UV index reading in June in San Dimas?

The average daily maximum UV index in June in San Dimas, California, is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
San Dimas, CA

Average temperature in June - San Dimas, CA
  • Average high temperature in June: 82.9°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 June: 57.7°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).

[Resources]

Average pressure in June
San Dimas, CA

Average pressure in June - San Dimas, CA
  • Average pressure in June: 29.87"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

[Resources]

Average wind speed in June
San Dimas, CA

Average wind speed in June - San Dimas, CA
  • Average wind speed in June: 5.3mph

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).

[Resources]

Average humidity in June
San Dimas, CA

Average humidity in June - San Dimas, CA
  • Average humidity in June: 53%

The months with the highest relative humidity are March and May (55%).
The months with the lowest relative humidity are August and November (45%).

[Resources]

Average rainfall in June
San Dimas, CA

Average rainfall in June - San Dimas, CA
  • Average rainfall in June: 0.04"

The wettest month (with the highest rainfall) is February (1.46").
The driest month (with the least rainfall) is June (0.04").

[Resources]

Average rainfall days in June
San Dimas, CA

Average rainfall days in June - San Dimas, CA
  • Average rainfall days in June: 1.2 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).

[Resources]

Average daylight in June /
Average sunshine in June
San Dimas, CA

Average daylight in June / Average sunshine in June - San Dimas, CA
  • Average daylight in June: 14h 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 June: 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).

[Resources]

Average sunshine days in June
San Dimas, CA

Average sunshine days in June - San Dimas, CA
  • Average sunshine days in June: 27.8 days

The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (22 days).

[Resources]

Average UV index in June
San Dimas, CA

Average UV index in June - San Dimas, CA
  • Average UV index in June: 6

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).

[Resources]

Average cloud cover in June
San Dimas, CA

Average cloud cover in June - San Dimas, CA
  • Average cloud cover in June: 7

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).

[Resources]

Average visibility in June
San Dimas, CA

Average visibility in June - San Dimas, CA
  • Average visibility in June: 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).

[Resources]

San Dimas, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location