June weather forecastPenryn, CA
June
Weather in June
June, the first month of the summer in Penryn, is still a warm month, with temperature in the range of an average low of 56.7°F (13.7°C) and an average high of 84.6°F (29.2°C).Temperature
As June arrives, a rise in the average high-temperature is observed, moving from 73.8°F (23.2°C) in May to a still warm 84.6°F (29.2°C). In Penryn, following the steep rise of daytime temperatures, an average nighttime low of 56.7°F (13.7°C) is anticipated during June.Heat index
The heat index value during June is evaluated at 84.2°F (29°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.Observations indicate that the heat index values are for shady locations with light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
In Penryn, California, the average relative humidity in June is 46%.Rainfall
In Penryn, in June, during 2.3 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Penryn, during the entire year, the rain falls for 84.8 days and collects up to 28.86" (733mm) of precipitation.Snowfall
In Penryn, snow does not fall in January, April through November.Daylight
With an average of 14h and 48min of daylight, June has the longest days of the year.On the first day of June, sunrise is at 5:40 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:33 pm PDT.
Sunshine
The average sunshine in June is 11.8h.UV index
June and July, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 7 in June leads to these recommendations:
Deflect overexposure. Sun protection is a necessity. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure 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
Penryn, CA
- Average high temperature in June: 84.6°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.4°F).
- Average low temperature in June: 56.7°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is December (39.2°F).
Average pressure in June
Penryn, CA
- Average pressure in June: 29.9"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in June
Penryn, CA
- Average wind speed in June: 4.9mph
The windiest months (with the highest average wind speed) are February and March (5.7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in June
Penryn, 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 (38%).
Average rainfall in June
Penryn, CA
- Average rainfall in June: 0.24"
The wettest month (with the highest rainfall) is March (5.63").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in June
Penryn, CA
- Average rainfall days in June: 2.3 days
The month with the highest number of rainy days is March (15.4 days).
The month with the least rainy days is July (1 days).
Average snowfall in June
Penryn, CA
- Average snowfall in June: 0"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days in June
Penryn, CA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight in June /
Average sunshine in June
Penryn, CA
- Average daylight in June: 14h and 48min
The month with the longest days is June (Average daylight: 14h and 48min).
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 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days in June
Penryn, CA
- Average sunshine days in June: 26.8 days
The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is March (14.6 days).
Average UV index in June
Penryn, CA
- Average UV index in June: 7
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in June
Penryn, 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
Penryn, 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).





