June weather forecastRiverdale, CA
June
Weather in June
The first month of the summer, June, is a tropical month in Riverdale, California, with an average temperature fluctuating between 94.6°F (34.8°C) and 63.3°F (17.4°C).Temperature
With the onset of June, the average high-temperature slightly shifts from May's warm 82.8°F (28.2°C) to a hot 94.6°F (34.8°C). Throughout the month of June, Riverdale observes a dramatic downturn from the daytime peak temperatures, expecting an average low of 63.3°F (17.4°C).Humidity
The average relative humidity in June is 34%.Rainfall
In Riverdale, during June, the rain falls for 1.3 days and regularly aggregates up to 0.12" (3mm) of precipitation. Throughout the year, there are 58.2 rainfall days, and 9.29" (236mm) of precipitation is accumulated.Daylight
June has the longest days of the year in Riverdale, with an average of 14h and 36min of daylight.On the first day of June, sunrise is at 5:42 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:21 pm PDT.
Sunshine
June and July, with an average of 12.1h of sunshine, are months with the most sunshine.UV index
June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 7 in June translates into the following instructions:
Deter overexposure. Protecting against the sun's effects is essential. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Riverdale, CA
- Average high temperature in June: 94.6°F
The warmest month (with the highest average high temperature) is July (102.2°F).
The month with the lowest average high temperature is December (57.2°F).
- Average low temperature in June: 63.3°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is December (43°F).
Average pressure in June
Riverdale, CA
- Average pressure in June: 29.89"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in June
Riverdale, CA
- Average wind speed in June: 7.1mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest months (with the lowest average wind speed) are January and November (4.8mph).
Average humidity in June
Riverdale, CA
- Average humidity in June: 34%
The months with the highest relative humidity are January and December (66%).
The month with the lowest relative humidity is July (30%).
Average rainfall in June
Riverdale, CA
- Average rainfall in June: 0.12"
The wettest months (with the highest rainfall) are January, February and March (1.54").
The driest month (with the least rainfall) is August (0.08").
Average rainfall days in June
Riverdale, CA
- Average rainfall days in June: 1.3 days
The month with the highest number of rainy days is March (9.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight in June /
Average sunshine in June
Riverdale, CA
- Average daylight in June: 14h and 36min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in June: 12h and 6min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in June
Riverdale, CA
- Average sunshine days in June: 27.9 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is February (19.4 days).
Average UV index in June
Riverdale, CA
- Average UV index in June: 7
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in June
Riverdale, CA
- Average cloud cover in June: 7
The months with the most cloud cover are March and December (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in June
Riverdale, 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).
