June weather forecast and climate
Grass Valley, CA

Weather in June

June, the first month of the summer, in Grass Valley, is a moderately hot month, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 82°F (27.8°C).

Temperature

In June, the average high-temperature increases, from an agreeable 71.2°F (21.8°C) in May, to a warm 82°F (27.8°C). In Grass Valley, the average low-temperature is 55.9°F (13.3°C).

Heat index

The average heat index in June is calculated to 82.2°F (27.9°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the 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 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, differences in body mass, height, and shape, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In June, the average relative humidity is 46%.

Rainfall

In Grass Valley, California, during June, the rain falls for 2.4 days and regularly aggregates up to 0.24" (6mm) of precipitation. Throughout the year, in Grass Valley, California, there are 82 rainfall days, and 33.11" (841mm) of precipitation is accumulated.

Snowfall

In Grass Valley, California, snow does not fall in June through October.

Daylight

With an average of 14.9h of daylight, June has the longest days of the year in Grass Valley, California.

Sunshine

In June, the average sunshine in Grass Valley, California, is 11.8h.

UV index

The average daily maximum UV index in June is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: In June, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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 temperature in June in Grass Valley?

In Grass Valley, California, in June, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 55.9°F (13.3°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), that represents influence of the relative humidity to air temperaure, in June is calculated to 82.2°F (27.9°C).

What is the average humidity in June in Grass Valley?

The average relative humidity in June in Grass Valley is 46%.

How much does it rain in Grass Valley in June?

In Grass Valley, in June, during 2.4 rainfall days, 0.24" (6mm) of precipitation is typically accumulated.

Does it snow in Grass Valley in June?

In June, in Grass Valley, California, it doesn't snow. May is the latest month when it typically snows.

When it does not snow in Grass Valley?

In Grass Valley snow does not fall in June through October.

When are the longest days in Grass Valley?

The month with the longest days is June, with an average of 14.9h of daylight.

How many hours of daylight does Grass Valley have in June?

In June, the average length of the day is 14.9h.

How long on average sun shines in June in Grass Valley?

The average sunshine in June is 11.8h.

What is the UV index reading in June in Grass Valley?

In Grass Valley, California, the average daily maximum UV index in June is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.

Average temperature in June
Grass Valley, CA

Average temperature in June - Grass Valley, CA
  • Average high temperature in June: 82°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (51.3°F).

  • Average low temperature in June: 55.9°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).

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Average pressure in June
Grass Valley, CA

Average pressure in June - Grass Valley, CA
  • Average pressure in June: 29.9"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in June
Grass Valley, CA

Average wind speed in June - Grass Valley, CA
  • Average wind speed in June: 5.3mph

The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in June
Grass Valley, CA

Average humidity in June - Grass Valley, CA
  • Average humidity in June: 46%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (37%).

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Average rainfall in June
Grass Valley, CA

Average rainfall in June - Grass Valley, CA
  • Average rainfall in June: 0.24"

The wettest month (with the highest rainfall) is March (6.57").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in June
Grass Valley, CA

Average rainfall days in June - Grass Valley, CA
  • Average rainfall days in June: 2.4 days

The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is July (1.1 days).

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Average snowfall in June
Grass Valley, CA

Average snowfall in June - Grass Valley, CA
  • Average snowfall in June: 0"

The month with the highest snowfall is February (6.42").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in June
Grass Valley, CA

Average snowfall days in June - Grass Valley, CA
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is March (2.4 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in June /
Average sunshine in June
Grass Valley, CA

Average daylight in June / Average sunshine in June - Grass Valley, CA
  • Average daylight in June: 14.9h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in June: 11.8h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is January (Average sunshine: 5.7h).

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Average sunshine days in June
Grass Valley, CA

Average sunshine days in June - Grass Valley, CA
  • Average sunshine days in June: 27.3 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).

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Average UV index in June
Grass Valley, CA

Average UV index in June - Grass Valley, CA
  • Average UV index in June: 6

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).

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Average cloud cover in June
Grass Valley, CA

Average cloud cover in June - Grass Valley, CA
  • Average cloud cover in June: 10

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in June
Grass Valley, CA

Average visibility in June - Grass Valley, 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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