May weather forecastColumbia, CT
May
Weather in May
May, the last month of the spring in Columbia, is an enjoyable month, with an average temperature fluctuating between 48.9°F (9.4°C) and 67.1°F (19.5°C).Temperature
Observing a rise in May, the average high-temperature goes from April's mild 55.9°F (13.3°C) to a still refreshing 67.1°F (19.5°C). In May, the recorded average low-temperature is a chilly 48.9°F (9.4°C).Humidity
In Columbia, the average relative humidity in May is 76%.Rainfall
In May, the rain falls for 17.1 days. Throughout May, 2.76" (70mm) of precipitation is accumulated. In Columbia, during the entire year, the rain falls for 164.2 days and collects up to 33.74" (857mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Columbia aggregates 0.28" (7mm) of snow. In Columbia, during the entire year, snow falls for 31.6 days and aggregates up to 15.98" (406mm) of snow.Daylight
In Columbia, the average length of the day in May is 14h and 34min.On the first day of the month, sunrise is at 5:44 am and sunset at 7:47 pm. On the last day of May, sunrise is at 5:17 am and sunset at 8:16 pm EDT.
Sunshine
In May, the average sunshine is 8.3h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In May, a regular UV index of 5 translates into these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Columbia, CT
- Average high temperature in May: 67.1°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in May: 48.9°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in May
Columbia, CT
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Columbia, CT
- Average wind speed in May: 7mph
The windiest months (with the highest average wind speed) are January and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in May
Columbia, CT
- Average humidity in May: 76%
The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in May
Columbia, CT
- Average rainfall in May: 2.76"
The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in May
Columbia, CT
- Average rainfall days in May: 17.1 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in May
Columbia, CT
- Average snowfall in May: 0.28"
The month with the highest snowfall is March (4.41").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Columbia, CT
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Columbia, CT
- Average daylight in May: 14h and 36min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in May
Columbia, CT
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in May
Columbia, CT
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Columbia, CT
- Average cloud cover in May: 48
The months with the most cloud cover are February, March, May and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Columbia, CT
- Average visibility in May: 5mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
