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
Rancho Cucamonga measures an average high-temperature of a warm 76.6°F (24.8°C) in May, nearly consistent with the preceding month. In the month of May, Rancho Cucamonga witnesses a marked temperature drop at night, averaging a low of 53.6°F (12°C).Humidity
The months with the highest humidity are February, March and May, with an average relative humidity of 53%.Rainfall
In Rancho Cucamonga, in May, it is raining for 3.2 days, with typically 0.2" (5mm) of accumulated precipitation. In Rancho Cucamonga, during the entire year, the rain falls for 42.3 days and collects up to 4.53" (115mm) of precipitation.Snowfall
In Rancho Cucamonga, 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 6:00 am and sunset at 7:34 pm. On the last day of May, sunrise is at 5:39 am and sunset at 7:56 pm PDT.
Sunshine
In Rancho Cucamonga, the average sunshine in May is 11.8h.UV index
In Rancho Cucamonga, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 6 transforms into these recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What are the most humid months in Rancho Cucamonga?
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 in Rancho Cucamonga?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Rancho Cucamonga, CA
- Average high temperature in May: 76.6°F
The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in May: 53.6°F
The month with the highest average low temperature is August (66.6°F).
The coldest months (with the lowest average low temperature) are February and December (45.3°F).
Average pressure in May
Rancho Cucamonga, CA
- Average pressure in May: 29.9"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in May
Rancho Cucamonga, CA
- Average wind speed in May: 5.9mph
The windiest month (with the highest average wind speed) is May (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in May
Rancho Cucamonga, CA
- Average humidity in May: 53%
The months with the highest relative humidity are February, March and May (53%).
The month with the lowest relative humidity is August (41%).
Average rainfall in May
Rancho Cucamonga, CA
- Average rainfall in May: 0.2"
The wettest month (with the highest rainfall) is February (0.98").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in May
Rancho Cucamonga, CA
- Average rainfall days in May: 3.2 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.9 days).
Average snowfall days in May
Rancho Cucamonga, 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
Rancho Cucamonga, 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 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 54min).
Average sunshine days in May
Rancho Cucamonga, CA
- Average sunshine days in May: 26.2 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (22.8 days).
Average UV index in May
Rancho Cucamonga, CA
- Average UV index in May: 6
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in May
Rancho Cucamonga, 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
Rancho Cucamonga, 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).
Rancho Cucamonga, California, USA
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