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
With the arrival of May, the average high-temperature transitions from a moderate 59°F (15°C) in April to a pleasant 69.3°F (20.7°C). Mountainside experiences an average low-temperature reading of 52.9°F (11.6°C) throughout May.Humidity
In May, the average relative humidity is 77%.Rainfall
In Mountainside, during May, the rain falls for 16.3 days and regularly aggregates up to 2.8" (71mm) of precipitation. In Mountainside, during the entire year, the rain falls for 160.7 days and collects up to 30.12" (765mm) of precipitation.Snowfall
Months with snowfall in Mountainside are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Mountainside aggregates 0.24" (6mm) of snow. In Mountainside, during the entire year, snow falls for 25.4 days and aggregates up to 10.31" (262mm) of snow.Daylight
In Mountainside, the average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 5:54 am and sunset at 7:53 pm. On the last day of May, sunrise is at 5:28 am and sunset at 8:21 pm EDT.
Sunshine
In Mountainside, the average sunshine in May is 8.6h.UV index
In Mountainside, 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 rays for the ordinary person.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What are the temperatures in Mountainside in May?
What is the average humidity in May in Mountainside?
How many days does it rain in May in Mountainside?
What is the last month it snows in Mountainside?
What is the average length of the day in May in Mountainside?
What time are sunrise and sunset in May in Mountainside?
How long on average sun shines in May in Mountainside?
What is the UV index intensity in May in Mountainside?
Average temperature in May
Mountainside, NJ
- Average high temperature in May: 69.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in May: 52.9°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in May
Mountainside, 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 (29.93"Hg).
Average wind speed in May
Mountainside, NJ
- Average wind speed in May: 7mph
The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Mountainside, NJ
- Average humidity in May: 77%
The months with the highest relative humidity are February, October and December (78%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in May
Mountainside, NJ
- Average rainfall in May: 2.8"
The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in May
Mountainside, NJ
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in May
Mountainside, NJ
- Average snowfall in May: 0.24"
The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Mountainside, NJ
- Average snowfall days in May: 0.1 days
The months with the highest number of snowfall days are January and February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Mountainside, NJ
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Mountainside, NJ
- Average sunshine days in May: 12.6 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in May
Mountainside, 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, March, November and December (UV index 2).
Average cloud cover in May
Mountainside, NJ
- Average cloud cover in May: 46
The months with the most cloud cover are February, March and December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in May
Mountainside, NJ
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Mountainside, New Jersey, USA
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