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 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 arrival of May witnesses a small shift in the average high-temperature, moving from a refreshing 63.1°F (17.3°C) in April to an agreeable 69.1°F (20.6°C). Boonville observes a dramatic plunge from daytime highs in May, settling at an average low-temperature of 45.1°F (7.3°C).Humidity
In May, the average relative humidity is 69%.Rainfall
In May, the rain falls for 5.7 days. Throughout May, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 83.3 rainfall days, and 17.72" (450mm) of precipitation is accumulated.Snowfall
In Boonville, snow does not fall in January, March through December.Daylight
In Boonville, the average length of the day in May is 14h and 20min.On the first day of May, sunrise is at 6:14 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:32 pm PDT.
Sunshine
The average sunshine in May is 10.5h.UV index
In Boonville, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
How much does it rain in May?
When it does not snow?
What is the average length of the day in May?
What time are sunrise and sunset in May?
How many hours of sunshine does Boonville have in May?
What is the UV index intensity in May?
Average temperature in May
Boonville, CA
- Average high temperature in May: 69.1°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (53.6°F).
- Average low temperature in May: 45.1°F
The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is December (37.4°F).
Average pressure in May
Boonville, CA
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in May
Boonville, CA
- Average wind speed in May: 5.5mph
The windiest months (with the highest average wind speed) are April, May and June (5.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).
Average humidity in May
Boonville, CA
- Average humidity in May: 69%
The month with the highest relative humidity is March (79%).
The months with the lowest relative humidity are July and September (58%).
Average rainfall in May
Boonville, CA
- Average rainfall in May: 1.02"
The wettest months (with the highest rainfall) are February and December (3.11").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in May
Boonville, CA
- Average rainfall days in May: 5.7 days
The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (1.3 days).
Average snowfall in May
Boonville, CA
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in May
Boonville, CA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.3 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
Boonville, CA
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 10h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in May
Boonville, CA
- Average sunshine days in May: 23 days
The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (15.9 days).
Average UV index in May
Boonville, CA
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are February and November (UV index 2).
Average cloud cover in May
Boonville, CA
- Average cloud cover in May: 29
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in May
Boonville, CA
- Average visibility in May: 6mi
The months with the highest visibility are February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, March and December (5mi).
Boonville, California, USA
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