May weather forecastPlaistow, NH
May
Weather in May
May, the last month of the spring in Plaistow, is a refreshing month, with temperature in the range of an average high of 65.5°F (18.6°C) and an average low of 48.7°F (9.3°C).Temperature
As Plaistow enters May, the average high-temperature increases from the a cool 54.5°F (12.5°C) of April to an enjoyable 65.5°F (18.6°C). In May, the average low-temperature is a chilly 48.7°F (9.3°C).Humidity
In May, the average relative humidity is 74%.Rainfall
In May, the rain falls for 7.8 days. Throughout May, 0.39" (10mm) of precipitation is accumulated. Throughout the year, in Plaistow, New Hampshire, there are 78.3 rainfall days, and 5.43" (138mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Plaistow aggregates 0.04" (1mm) of snow. In Plaistow, during the entire year, snow falls for 17.2 days and aggregates up to 2.6" (66mm) of snow.Daylight
The average length of the day in May in Plaistow is 14h and 40min.On the first day of the month, sunrise is at 5:37 am and sunset at 7:45 pm. On the last day of May, in Plaistow, sunrise is at 5:08 am and sunset at 8:15 pm EDT.
Sunshine
The average sunshine in May in Plaistow is 8.5h.UV index
The average daily maximum UV index in May in Plaistow is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Take precautions - Protection against sunburn is recommended. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Plaistow, NH
- Average high temperature in May: 65.5°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 (32.5°F).
- Average low temperature in May: 48.7°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in May
Plaistow, NH
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Plaistow, NH
- Average wind speed in May: 6.9mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in May
Plaistow, NH
- Average humidity in May: 74%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).
Average rainfall in May
Plaistow, NH
- Average rainfall in May: 0.39"
The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.2").
Average rainfall days in May
Plaistow, NH
- Average rainfall days in May: 7.8 days
The month with the highest number of rainy days is July (8.8 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in May
Plaistow, NH
- Average snowfall in May: 0.04"
The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Plaistow, NH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Plaistow, NH
- Average daylight in May: 14h and 42min
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 30min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in May
Plaistow, NH
- Average sunshine days in May: 20.3 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is April (18.4 days).
Average UV index in May
Plaistow, NH
- 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
Plaistow, NH
- Average cloud cover in May: 46
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Plaistow, NH
- 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).





