May weather forecastRoseland, CA
May
Weather in May
The last month of the spring, May, is an agreeable month in Roseland, California, with an average temperature fluctuating between 48.6°F (9.2°C) and 69.1°F (20.6°C).Temperature
As April transitions into May, the average high-temperature rests at an agreeable 69.1°F (20.6°C), maintaining a close resemblance to the previous month. Throughout May, an average low-temperature of 48.6°F (9.2°C) is expected.Humidity
In May, the average relative humidity is 70%.Rainfall
In Roseland, in May, during 5.3 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Roseland, during the entire year, the rain falls for 72.8 days and collects up to 12.01" (305mm) of precipitation.Daylight
In May, the average length of the day in Roseland is 14h and 17min.On the first day of May, sunrise is at 6:12 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:28 pm PDT.
Sunshine
The average sunshine in May is 10.5h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 5 during May leads to these advisories:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Roseland, CA
- Average high temperature in May: 69.1°F
The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in May: 48.6°F
The months with the highest average low temperature are August and September (54.7°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in May
Roseland, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in May
Roseland, CA
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).
Average humidity in May
Roseland, CA
- Average humidity in May: 70%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (63%).
Average rainfall in May
Roseland, CA
- Average rainfall in May: 0.55"
The wettest month (with the highest rainfall) is February (2.64").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Roseland, CA
- Average rainfall days in May: 5.3 days
The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).
Average daylight in May /
Average sunshine in May
Roseland, 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 30min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in May
Roseland, CA
- Average sunshine days in May: 23.4 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (17.1 days).
Average UV index in May
Roseland, CA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Roseland, CA
- Average cloud cover in May: 26
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in May
Roseland, 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).
