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
Observing a slight rise in May, the average high-temperature shifts from April's pleasant 69.8°F (21°C) to a warm 77.5°F (25.3°C). Wilton's May nights cool down significantly from the day's heat, to an average low-temperature of 50.9°F (10.5°C).Humidity
In Wilton, the average relative humidity in May is 59%.Rainfall
In Wilton, during May, the rain falls for 5.3 days and regularly aggregates up to 0.83" (21mm) of precipitation. Throughout the year, there are 73.3 rainfall days, and 15.63" (397mm) of precipitation is accumulated.Snowfall
In Wilton, snow does not fall in January through November.Daylight
In May, the average length of the day is 14h and 17min.On the first day of May in Wilton, sunrise is at 6:06 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:22 pm PDT.
Sunshine
The average sunshine in May is 11.1h.UV index
The average daily maximum UV index in May in Wilton is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Wilton?
What is the average humidity in May in Wilton?
How much does it rain in Wilton in May?
When it does not snow in Wilton?
What is the average length of the day in May in Wilton?
When are sunrise and sunset in May in Wilton?
How many hours of sunshine does Wilton have in May?
What is the UV index reading in May in Wilton?
Average temperature in May
Wilton, CA
- Average high temperature in May: 77.5°F
The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is December (54.7°F).
- Average low temperature in May: 50.9°F
The month with the highest average low temperature is August (59.2°F).
The coldest months (with the lowest average low temperature) are January and December (40.8°F).
Average pressure in May
Wilton, 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
Wilton, CA
- Average wind speed in May: 5.2mph
The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.1mph).
Average humidity in May
Wilton, CA
- Average humidity in May: 59%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (44%).
Average rainfall in May
Wilton, CA
- Average rainfall in May: 0.83"
The wettest month (with the highest rainfall) is March (2.91").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Wilton, CA
- Average rainfall days in May: 5.3 days
The month with the highest number of rainy days is March (13.3 days).
The months with the least rainy days are June, July and August (1.4 days).
Average snowfall days in May
Wilton, 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
Wilton, CA
- Average daylight in May: 14h and 2min
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 30min).
- Average sunshine in May: 11h and 1min
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 48min).
Average sunshine days in May
Wilton, CA
- Average sunshine days in May: 24.9 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (16.9 days).
Average UV index in May
Wilton, CA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in May
Wilton, CA
- Average cloud cover in May: 20
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in May
Wilton, 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).
Wilton, California, USA
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