May weather forecastThornton, CA
May
Weather in May
The last month of the spring, May, is a warm month in Thornton, California, with an average temperature ranging between min 51.1°F (10.6°C) and max 77.7°F (25.4°C).Temperature
Observing a minor shift, the average high-temperature during May adjusts from April's agreeable 69.8°F (21°C) to a moderately hot 77.7°F (25.4°C). A noteworthy temperature dip to a fresh 51.1°F (10.6°C) is observed during the nights of May.Humidity
In May, the average relative humidity is 58%.Rainfall
In May, the rain falls for 4.8 days. Throughout May, 0.71" (18mm) of precipitation is accumulated. Throughout the year, there are 63.8 rainfall days, and 12.6" (320mm) of precipitation is accumulated.Snowfall
In Thornton, snow does not fall in January through November.Daylight
In Thornton, the average length of the day in May is 14h and 16min.On the first day of the month, sunrise is at 6:07 am and sunset at 7:57 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:22 pm PDT.
Sunshine
In May, the average sunshine is 11.2h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In May, the average maximum UV index of 5 translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Thornton, CA
- Average high temperature in May: 77.7°F
The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (55°F).
- Average low temperature in May: 51.1°F
The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (41°F).
Average pressure in May
Thornton, 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
Thornton, CA
- Average wind speed in May: 5.7mph
The windiest months (with the highest average wind speed) are February and June (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).
Average humidity in May
Thornton, CA
- Average humidity in May: 58%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (45%).
Average rainfall in May
Thornton, CA
- Average rainfall in May: 0.71"
The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Thornton, CA
- Average rainfall days in May: 4.8 days
The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is June (0.9 days).
Average snowfall days in May
Thornton, 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
Thornton, 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 36min).
- Average sunshine in May: 11h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in May
Thornton, CA
- Average sunshine days in May: 25.5 days
The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in May
Thornton, CA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Thornton, CA
- Average cloud cover in May: 19
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in May
Thornton, 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).
