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 snowfall 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
The advent of May brings an average high-temperature of a warm 74.3°F (23.5°C), almost identical to the preceding month. South Pasadena's temperature in May lowers to a consistent average of 55°F (12.8°C) during the nights.Humidity
In South Pasadena, the average relative humidity in May is 58%.Rainfall
In May, the rain falls for 3.4 days. Throughout May, 0.24" (6mm) of precipitation is accumulated. Throughout the year, there are 49.2 rainfall days, and 8.23" (209mm) of precipitation is accumulated.Snowfall
In South Pasadena, snow does not fall in January through November.Daylight
In May, the average length of the day is 13h and 57min.On the first day of the month, sunrise is at 6:02 am and sunset at 7:36 pm. On the last day of May, sunrise is at 5:42 am and sunset at 7:58 pm PDT.
Sunshine
The average sunshine in May is 11.7h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
What is the average length of the day in May?
When is the sunrise / sunset in May?
How many hours of sunshine does South Pasadena have in May?
What is the UV index reading in May?
Average temperature in May
South Pasadena, CA
- Average high temperature in May: 74.3°F
The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is December (63.1°F).
- Average low temperature in May: 55°F
The month with the highest average low temperature is August (65.7°F).
The coldest months (with the lowest average low temperature) are February and December (47.8°F).
Average pressure in May
South Pasadena, CA
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
South Pasadena, CA
- Average wind speed in May: 5.5mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).
Average humidity in May
South Pasadena, CA
- Average humidity in May: 58%
The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (47%).
Average rainfall in May
South Pasadena, CA
- Average rainfall in May: 0.24"
The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in May
South Pasadena, CA
- Average rainfall days in May: 3.4 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1 days).
Average snowfall days in May
South Pasadena, CA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in May /
Average sunshine in May
South Pasadena, CA
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 11h and 4min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 54min).
Average sunshine days in May
South Pasadena, CA
- Average sunshine days in May: 25.3 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (21 days).
Average UV index in May
South Pasadena, CA
- Average UV index in May: 5
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 4).
Average cloud cover in May
South Pasadena, CA
- Average cloud cover in May: 13
The months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in May
South Pasadena, 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).
South Pasadena, California, USA
Weather forecast for your location
2. Allow the app to use your location