May weather forecastDelmont, NJ
May
Weather in May
May, the last month of the spring in Delmont, is an enjoyable month, with an average temperature ranging between min 57°F (13.9°C) and max 66.2°F (19°C).Temperature
A shift in the average high-temperature is noticeable in May, changing from a mild 56.8°F (13.8°C) in April to a still refreshing 66.2°F (19°C). May brings Delmont a consistent average low-temperature of 57°F (13.9°C).Humidity
May is the most humid month, with an average relative humidity of 81%.Rainfall
In Delmont, during May, the rain falls for 13.8 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Delmont, during the entire year, the rain falls for 130.8 days and collects up to 13.23" (336mm) of precipitation.Snowfall
In Delmont, snow does not fall in April through October.Daylight
The average length of the day in May is 14h and 20min.On the first day of May, sunrise is at 6:00 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:35 am and sunset at 8:19 pm EDT.
Sunshine
In May, the average sunshine is 9.2h.UV index
In Delmont, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 5 in May translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Delmont, NJ
- Average high temperature in May: 66.2°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in May: 57°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.3°F).
Average pressure in May
Delmont, NJ
- Average pressure in May: 30.02"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
Delmont, NJ
- Average wind speed in May: 9.7mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in May
Delmont, NJ
- Average humidity in May: 81%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is November (73%).
Average rainfall in May
Delmont, NJ
- Average rainfall in May: 1.42"
The wettest month (with the highest rainfall) is August (1.61").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in May
Delmont, NJ
- Average rainfall days in May: 13.8 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (7 days).
Average snowfall in May
Delmont, NJ
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Delmont, NJ
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.7 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
Delmont, NJ
- Average daylight in May: 14h and 18min
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: 9h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in May
Delmont, NJ
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in May
Delmont, NJ
- 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 and December (UV index 2).
Average cloud cover in May
Delmont, NJ
- Average cloud cover in May: 40
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in May
Delmont, NJ
- 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).





