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
May's arrival coincides with a marginal rise in the average high-temperature, moving from April's refreshing 65.3°F (18.5°C) to a pleasant 73°F (22.8°C). May nights bring a pronounced temperature shift, with averages hovering around a frosty 49.1°F (9.5°C).Humidity
In May, the average relative humidity is 55%.Rainfall
In Columbia, in May, during 6.8 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Columbia, during the entire year, the rain falls for 76.7 days and collects up to 23.9" (607mm) of precipitation.Snowfall
In Columbia, snow does not fall in April through October.Daylight
The average length of the day in May in Columbia is 14h and 15min.On the first day of the month, sunrise is at 6:04 am and sunset at 7:53 pm. On the last day of May, sunrise is at 5:40 am and sunset at 8:18 pm PDT.
Sunshine
In Columbia, the average sunshine in May is 11.1h.UV index
In Columbia, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Adopt protective measures - It is advised to guard against sun damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Columbia?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
How many hours of daylight does Columbia have in May?
When is the sunrise / sunset in May in Columbia?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Columbia, CA
- Average high temperature in May: 73°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (52.9°F).
- Average low temperature in May: 49.1°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).
Average pressure in May
Columbia, CA
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Columbia, CA
- Average wind speed in May: 5.5mph
The windiest months (with the highest average wind speed) are February, March and April (5.7mph).
The calmest months (with the lowest average wind speed) are November and December (4.7mph).
Average humidity in May
Columbia, CA
- Average humidity in May: 55%
The month with the highest relative humidity is March (70%).
The month with the lowest relative humidity is July (32%).
Average rainfall in May
Columbia, CA
- Average rainfall in May: 1.54"
The wettest month (with the highest rainfall) is March (4.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in May
Columbia, CA
- Average rainfall days in May: 6.8 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.4 days).
Average snowfall in May
Columbia, CA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Columbia, CA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Columbia, CA
- Average daylight in May: 14h and 1min
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 1min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in May
Columbia, CA
- Average sunshine days in May: 22.4 days
The months with the most sunshine days are July and August (28.4 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in May
Columbia, CA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in May
Columbia, CA
- Average cloud cover in May: 19
The month with the most cloud cover is March (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in May
Columbia, 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).
Columbia, California, USA
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