May weather forecastColumbia, NJ
May
Weather in May
May, the last month of the spring in Columbia, is a pleasant month, with an average temperature varying between 68.5°F (20.3°C) and 49.1°F (9.5°C).Temperature
May brings a temperature change, with average high-temperatures moving from April's moderate 56.8°F (13.8°C) to a pleasant 68.5°F (20.3°C). Columbia observes an average low-temperature of 49.1°F (9.5°C) during May.Humidity
The average relative humidity in May is 79%.Rainfall
In Columbia, during May, the rain falls for 15.5 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Columbia, New Jersey, during the entire year, the rain falls for 135.7 days and collects up to 23.74" (603mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Columbia. May is the last month it regularly snows. During 0.3 snowfall days, in May, Columbia aggregates 0.47" (12mm) of snow. Throughout the year, in Columbia, New Jersey, there are 33.7 snowfall days, and 16.65" (423mm) of snow is accumulated.Daylight
In May, the average length of the day in Columbia, New Jersey, is 14h and 29min.On the first day of the month, sunrise is at 5:57 am and sunset at 7:57 pm. On the last day of May, sunrise is at 5:30 am and sunset at 8:25 pm EDT.
Sunshine
In Columbia, the average sunshine in May is 8.1h.UV index
In Columbia, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 5 during May leads to these advisories:
Put precautions into practice - Ensuring skin and eye safety is a necessity. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Columbia, NJ
- Average high temperature in May: 68.5°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in May: 49.1°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in May
Columbia, NJ
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Columbia, NJ
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in May
Columbia, NJ
- Average humidity in May: 79%
The months with the highest relative humidity are February and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in May
Columbia, NJ
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is July (2.48").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in May
Columbia, NJ
- Average rainfall days in May: 15.5 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in May
Columbia, NJ
- Average snowfall in May: 0.47"
The month with the highest snowfall is March (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Columbia, NJ
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Columbia, NJ
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in May
Columbia, NJ
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in May
Columbia, NJ
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Columbia, NJ
- Average cloud cover in May: 50
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in May
Columbia, NJ
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
