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
The beginning of May signals a rise in the average high-temperature, moving from a refreshing 58.6°F (14.8°C) in April to an agreeable 69.6°F (20.9°C). Throughout the month of May, Mendham sees a steady low-temperature average of 50.9°F (10.5°C).Humidity
In Mendham, the average relative humidity in May is 78%.Rainfall
In Mendham, during May, the rain falls for 17.3 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Mendham, during the entire year, the rain falls for 162.6 days and collects up to 33.11" (841mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Mendham. May is the last month it regularly snows. During 0.2 snowfall days, in May, Mendham aggregates 0.55" (14mm) of snow. In Mendham, during the entire year, snow falls for 28.5 days and aggregates up to 14.49" (368mm) of snow.Daylight
In May, the average length of the day in Mendham, New Jersey, is 14h and 28min.On the first day of the month, sunrise is at 5:55 am and sunset at 7:55 pm. On the last day of May, sunrise is at 5:29 am and sunset at 8:23 pm EDT.
Sunshine
In May, the average sunshine is 8.5h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A maximum high UV index of 5 in May translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows in Mendham?
What is the average length of the day in May in Mendham?
What time are sunrise and sunset in May?
How long on average sun shines in May in Mendham?
What is the UV index intensity in May?
Average temperature in May
Mendham, NJ
- Average high temperature in May: 69.6°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in May: 50.9°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in May
Mendham, 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
Mendham, NJ
- Average wind speed in May: 6.4mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in May
Mendham, NJ
- Average humidity in May: 78%
The months with the highest relative humidity are February and October (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in May
Mendham, NJ
- Average rainfall in May: 3.11"
The wettest month (with the highest rainfall) is December (3.39").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in May
Mendham, NJ
- Average rainfall days in May: 17.3 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is January (8.9 days).
Average snowfall in May
Mendham, NJ
- Average snowfall in May: 0.55"
The month with the highest snowfall is March (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Mendham, NJ
- 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 and September (0 days).
Average daylight in May /
Average sunshine in May
Mendham, NJ
- Average daylight in May: 14h and 3min
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 3min
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
Mendham, NJ
- Average sunshine days in May: 11.4 days
The month with the most sunshine days is November (17.6 days).
The month with the least sunshine days is May (11.4 days).
Average UV index in May
Mendham, NJ
- Average UV index in May: 5
The months with the highest UV index are June and July (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
Mendham, NJ
- Average cloud cover in May: 47
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in May
Mendham, NJ
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are May, September and October (5mi).
Mendham, New Jersey, USA
Weather forecast for your location
2. Allow the app to use your location