June weather forecastGrass Valley, CA
June
Weather in June
June, the first month of the summer in Grass Valley, is a moderately hot month, with an average temperature ranging between min 55.9°F (13.3°C) and max 82°F (27.8°C).Temperature
June brings an increase in the average high-temperature, progressing from a pleasant 71.2°F (21.8°C) in May to a moderately hot 82°F (27.8°C). A striking difference from the daytime highs is registered during June nights in Grass Valley, California, with an average temperature of 55.9°F (13.3°C).Heat index
During June, the heat index is estimated at 82.4°F (28°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.Given the heat index, its values are aligned with shaded sites and gentle winds. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. 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
The average relative humidity in June is 46%.Rainfall
In June, in Grass Valley, the rain falls for 2.4 days. Throughout June, 0.24" (6mm) of precipitation is accumulated. In Grass Valley, during the entire year, the rain falls for 82 days and collects up to 33.11" (841mm) of precipitation.Snowfall
In Grass Valley, snow does not fall in June through October.Daylight
With an average of 14h and 54min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 5:39 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:34 pm PDT.
Sunshine
The average sunshine in June is 11.8h.UV index
In June, the average daily maximum UV index in Grass Valley is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In June, the maximum UV index of 6 translates into these guidelines:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
Average pressure in June
Grass Valley, CA
- Average pressure in June: 29.9"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
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).
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%).
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").
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).
Average snowfall in June
Grass Valley, CA
- Average snowfall in June: 0"
The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August, September and October (0").
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).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in June /
Average sunshine in June
Grass Valley, CA
- Average daylight in June: 14h and 54min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in June: 11h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
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).
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).
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).
Average visibility in June
Grass Valley, 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).
