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 average high-temperature increases in May, moving from a cool 52.9°F (11.6°C) in April to a comfortable 66°F (18.9°C). Sullivan's temperature drops to an average low of 45.3°F (7.4°C) during the nights of May.Humidity
In Sullivan, the average relative humidity in May is 75%.Rainfall
In Sullivan, in May, during 14.6 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 125.1 rainfall days, and 11.69" (297mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Sullivan aggregates 0.16" (4mm) of snow. In Sullivan, during the entire year, snow falls for 39.8 days and aggregates up to 10.2" (259mm) of snow.Daylight
In Sullivan, the average length of the day in May is 14h and 41min.On the first day of May, sunrise is at 5:41 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:12 am and sunset at 8:20 pm EDT.
Sunshine
In Sullivan, the average sunshine in May is 8.4h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In May, a daily UV index of 5 turns into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How much does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index reading in May in Sullivan?
Average temperature in May
Sullivan, NH
- Average high temperature in May: 66°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 45.3°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in May
Sullivan, NH
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Sullivan, NH
- Average wind speed in May: 6.4mph
The windiest months (with the highest average wind speed) are January, February and March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in May
Sullivan, NH
- Average humidity in May: 75%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in May
Sullivan, NH
- Average rainfall in May: 1.14"
The wettest month (with the highest rainfall) is July (1.3").
The driest month (with the least rainfall) is March (0.75").
Average rainfall days in May
Sullivan, NH
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in May
Sullivan, NH
- Average snowfall in May: 0.16"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Sullivan, NH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Sullivan, NH
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in May
Sullivan, NH
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in May
Sullivan, NH
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Sullivan, NH
- Average cloud cover in May: 47
The months with the most cloud cover are February and March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Sullivan, NH
- 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).
Sullivan, New Hampshire, USA
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