May weather forecastPenryn, CA
May
Weather in May
May, the last month of the spring in Penryn, is a warm month, with an average temperature varying between 49.6°F (9.8°C) and 73.8°F (23.2°C).Temperature
With the beginning of May, Penryn's average high-temperature sees a minor increase, transitioning from a comfortable 65.8°F (18.8°C) in April to a moderately hot 73.8°F (23.2°C). Nightfall in May introduces a considerable dip in temperature, settling at an average of 49.6°F (9.8°C).Humidity
In May, the average relative humidity is 60%.Rainfall
In Penryn, in May, during 6.8 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. Throughout the year, there are 84.8 rainfall days, and 28.86" (733mm) of precipitation is accumulated.Snowfall
January, April through November are months without snowfall.Daylight
The average length of the day in May is 14h and 19min.On the first day of May, sunrise is at 6:05 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:23 pm PDT.
Sunshine
The average sunshine in May is 10.9h.UV index
In Penryn, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during May translates into the following guidance:
Guard yourself - Precautionary measures against sun damage are advocated. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Penryn, CA
- Average high temperature in May: 73.8°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 May: 49.6°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 May
Penryn, CA
- Average pressure in May: 29.95"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 May
Penryn, CA
- Average wind speed in May: 5.2mph
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 May
Penryn, CA
- Average humidity in May: 60%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (38%).
Average rainfall in May
Penryn, CA
- Average rainfall in May: 1.57"
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 May
Penryn, CA
- Average rainfall days in May: 6.8 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 May
Penryn, CA
- Average snowfall in May: 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 May
Penryn, CA
- Average snowfall days in May: 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 May /
Average sunshine in May
Penryn, CA
- Average daylight in May: 14h and 18min
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 May: 10h and 54min
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 May
Penryn, CA
- Average sunshine days in May: 23.2 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 May
Penryn, CA
- Average UV index in May: 5
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 May
Penryn, CA
- Average cloud cover in May: 21
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 May
Penryn, CA
- Average visibility in May: 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).
