May weather forecastGrand Terrace, CA
May
Weather in May
The last month of the spring, May, is a moderately hot month in Grand Terrace, California, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 52.7°F (11.5°C).Temperature
With the arrival of May, Grand Terrace's average high-temperature registers at a warm 76.5°F (24.7°C), indicating a subtle variation from the previous month. From the height of daytime heat, the temperature recedes to an average of 52.7°F (11.5°C) at night during May.Humidity
In Grand Terrace, the average relative humidity in May is 52%.Rainfall
In Grand Terrace, in May, during 3.6 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. In Grand Terrace, during the entire year, the rain falls for 46.6 days and collects up to 6.18" (157mm) of precipitation.Snowfall
In Grand Terrace, snow does not fall in January, March through December.Daylight
In May, the average length of the day is 13h and 57min.On the first day of the month, sunrise is at 5:59 am and sunset at 7:33 pm. On the last day of May, sunrise is at 5:38 am and sunset at 7:55 pm PDT.
Sunshine
In Grand Terrace, the average sunshine in May is 11.8h.UV index
In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 6 in May, converts into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Grand Terrace, CA
- Average high temperature in May: 76.5°F
The warmest month (with the highest average high temperature) is August (91.9°F).
The month with the lowest average high temperature is December (59.9°F).
- Average low temperature in May: 52.7°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).
Average pressure in May
Grand Terrace, CA
- Average pressure in May: 29.89"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in May
Grand Terrace, CA
- Average wind speed in May: 6mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in May
Grand Terrace, CA
- Average humidity in May: 52%
The month with the highest relative humidity is February (53%).
The month with the lowest relative humidity is August (38%).
Average rainfall in May
Grand Terrace, CA
- Average rainfall in May: 0.16"
The wettest month (with the highest rainfall) is December (1.42").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in May
Grand Terrace, CA
- Average rainfall days in May: 3.6 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.2 days).
Average snowfall days in May
Grand Terrace, CA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Grand Terrace, CA
- Average daylight in May: 13h and 54min
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 48min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in May
Grand Terrace, CA
- Average sunshine days in May: 26.1 days
The months with the most sunshine days are June and October (27.9 days).
The month with the least sunshine days is February (21.7 days).
Average UV index in May
Grand Terrace, CA
- Average UV index in May: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Grand Terrace, CA
- Average cloud cover in May: 12
The months with the most cloud cover are February and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in May
Grand Terrace, 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).
