Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Riverdale Park's weather shows a minor temperature rise with the arrival of May, moving from a pleasant 72.1°F (22.3°C) in April to a warm 80.1°F (26.7°C). Riverdale Park experiences a significant downturn from peak daytime temperatures throughout May, with the average low-temperature dipping to a fresh 52.7°F (11.5°C).Humidity
In May, the average relative humidity is 51%.Rainfall
In Riverdale Park, in May, it is raining for 3.6 days, with typically 0.39" (10mm) of accumulated precipitation. Throughout the year, there are 54.3 rainfall days, and 6.54" (166mm) of precipitation is accumulated.Daylight
In Riverdale Park, the average length of the day in May is 14h and 13min.On the first day of the month, sunrise is at 6:07 am and sunset at 7:54 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:19 pm PDT.
Sunshine
In Riverdale Park, California, the average sunshine in May is 11.3h.UV index
The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: In May, a regular UV index of 6 translates into these guidelines:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How many days does it rain in May?
How many hours of daylight does Riverdale Park have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Riverdale Park have in May?
What is the UV index reading in May?
Average temperature in May
Riverdale Park, CA
- Average high temperature in May: 80.1°F
The warmest month (with the highest average high temperature) is July (97.7°F).
The month with the lowest average high temperature is December (55.6°F).
- Average low temperature in May: 52.7°F
The month with the highest average low temperature is July (62.1°F).
The coldest months (with the lowest average low temperature) are January and December (41.9°F).
Average pressure in May
Riverdale Park, CA
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Riverdale Park, CA
- Average wind speed in May: 6.7mph
The windiest month (with the highest average wind speed) is June (7.3mph).
The calmest month (with the lowest average wind speed) is November (5.2mph).
Average humidity in May
Riverdale Park, CA
- Average humidity in May: 51%
The month with the highest relative humidity is January (72%).
The month with the lowest relative humidity is July (37%).
Average rainfall in May
Riverdale Park, CA
- Average rainfall in May: 0.39"
The wettest month (with the highest rainfall) is March (1.3").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Riverdale Park, CA
- Average rainfall days in May: 3.6 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in May /
Average sunshine in May
Riverdale Park, CA
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in May: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in May
Riverdale Park, CA
- Average sunshine days in May: 26.7 days
The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (19.6 days).
Average UV index in May
Riverdale Park, CA
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Riverdale Park, CA
- Average cloud cover in May: 17
The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in May
Riverdale Park, 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).
Riverdale Park, California, USA
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