June weather forecast and climate
Walnut Creek, CA

Vast fields and forest slopes of the iconic Mount Diablo State Park within the Walnut Creek in California
Vast fields and forest slopes of the iconic Mount Diablo State Park within the Walnut Creek in California

Weather in June

June, the first month of the summer, in Walnut Creek, is a warm month, with average temperature ranging between max 79.9°F (26.6°C) and min 54.5°F (12.5°C).

Temperature

In Walnut Creek, the average high-temperature slightly increases, from an agreeable 72.3°F (22.4°C) in May, to a warm 79.9°F (26.6°C). In Walnut Creek, in June, the average low-temperature is 54.5°F (12.5°C).

Humidity

In June, the average relative humidity is 59%.

Rainfall

In Walnut Creek, California,, it is raining for 1.5 days, with typically 0.12" (3mm) of accumulated precipitation. Throughout the year, there are 68.7 rainfall days, and 11.26" (286mm) of precipitation is accumulated.

Daylight

The month with the longest days in Walnut Creek, California, is June, with an average of 14.8h of daylight.

Sunshine

In June, the average sunshine is 11.7h.

UV index

Months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 6 in June transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in June in Walnut Creek?

In Walnut Creek, California, the average relative humidity in June is 59%.

How much does it rain in Walnut Creek in June?

In June, the rain falls for 1.5 days. Throughout June, 0.12" (3mm) of precipitation is accumulated.

When are the longest days in Walnut Creek?

June has the longest days of the year in Walnut Creek, with an average of 14.8h of daylight.

How many hours of daylight does Walnut Creek have in June?

In Walnut Creek, California, the average length of the day in June is 14.8h.

How long on average sun shines in June in Walnut Creek?

In Walnut Creek, the average sunshine in June is 11.7h.

When is the highest UV index in Walnut Creek?

June and July, with an average maximum UV index of 6, are months with the highest UV index in Walnut Creek, California.

How high is the UV index in June in Walnut Creek?

In Walnut Creek, California, the average daily maximum UV index in June is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.

Average temperature in June
Walnut Creek, CA

Average temperature in June - Walnut Creek, CA
  • Average high temperature in June: 79.9°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in June: 54.5°F

The month with the highest average low temperature is September (57.2°F).
The coldest months (with the lowest average low temperature) are January and December (42.4°F).

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Average pressure in June
Walnut Creek, CA

Average pressure in June - Walnut Creek, CA
  • Average pressure in June: 29.91"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in June
Walnut Creek, CA

Average wind speed in June - Walnut Creek, CA
  • Average wind speed in June: 7.1mph

The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).

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Average humidity in June
Walnut Creek, CA

Average humidity in June - Walnut Creek, CA
  • Average humidity in June: 59%

The month with the highest relative humidity is March (74%).
Months with the lowest relative humidity are September and October (58%).

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Average rainfall in June
Walnut Creek, CA

Average rainfall in June - Walnut Creek, CA
  • Average rainfall in June: 0.12"

The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in June
Walnut Creek, CA

Average rainfall days in June - Walnut Creek, CA
  • Average rainfall days in June: 1.5 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).

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Average daylight in June /
Average sunshine in June
Walnut Creek, CA

Average daylight in June / Average sunshine in June - Walnut Creek, CA
  • Average daylight in June: 14.8h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in June: 11.7h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in June
Walnut Creek, CA

Average sunshine days in June - Walnut Creek, CA
  • Average sunshine days in June: 27.6 days

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is March (17.5 days).

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Average UV index in June
Walnut Creek, CA

Average UV index in June - Walnut Creek, CA
  • Average UV index in June: 6

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in June
Walnut Creek, CA

Average cloud cover in June - Walnut Creek, CA
  • Average cloud cover in June: 13

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in June
Walnut Creek, CA

Average visibility in June - Walnut Creek, CA
  • Average visibility in June: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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