May weather forecastArroyo Grande, CA
May
Weather in May
The last month of the spring, May, is an agreeable month in Arroyo Grande, California, with an average temperature varying between 70.5°F (21.4°C) and 51.4°F (10.8°C).Temperature
The transition into May reveals an average high-temperature of an agreeable 70.5°F (21.4°C), mirroring a close resemblance to April. In May, the nighttime temperature in Arroyo Grande lowers to an average of 51.4°F (10.8°C).Humidity
The average relative humidity in May is 65%.Rainfall
In Arroyo Grande, in May, during 3 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. Throughout the year, there are 47.6 rainfall days, and 6.93" (176mm) of precipitation is accumulated.Daylight
In May, the average length of the day is 14h and 2min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:48 pm. On the last day of May, sunrise is at 5:49 am and sunset at 8:11 pm PDT.
Sunshine
In May, the average sunshine is 11.4h.UV index
The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 5 in May transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Arroyo Grande, CA
- Average high temperature in May: 70.5°F
The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).
Average pressure in May
Arroyo Grande, CA
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in May
Arroyo Grande, CA
- Average wind speed in May: 7.3mph
The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in May
Arroyo Grande, CA
- Average humidity in May: 65%
The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).
Average rainfall in May
Arroyo Grande, CA
- Average rainfall in May: 0.16"
The wettest month (with the highest rainfall) is March (1.61").
The driest months (with the least rainfall) are June and August (0.04").
Average rainfall days in May
Arroyo Grande, CA
- Average rainfall days in May: 3 days
The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).
Average daylight in May /
Average sunshine in May
Arroyo Grande, CA
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in May: 11h and 24min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in May
Arroyo Grande, CA
- Average sunshine days in May: 27.2 days
The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).
Average UV index in May
Arroyo Grande, CA
- Average UV index in May: 5
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in May
Arroyo Grande, CA
- Average cloud cover in May: 16
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in May
Arroyo Grande, 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).
