May weather forecastWinchester, NH
May
Weather in May
The last month of the spring, May, is a comfortable month in Winchester, New Hampshire, with temperature in the range of an average low of 46°F (7.8°C) and an average high of 66.9°F (19.4°C).Temperature
The start of May brings a rise in the average high-temperature, moving from a fresh 53.4°F (11.9°C) in April to a refreshing 66.9°F (19.4°C). An average low-temperature of 46°F (7.8°C) marks the month of May.Humidity
In Winchester, the average relative humidity in May is 74%.Rainfall
In Winchester, in May, during 15 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, in Winchester, New Hampshire, there are 146.7 rainfall days, and 27.2" (691mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Winchester aggregates 0.31" (8mm) of snow. Throughout the year, in Winchester, there are 43.8 snowfall days, and 27.28" (693mm) of snow is accumulated.Daylight
In May, the average length of the day in Winchester is 14h and 39min.On the first day of May in Winchester, New Hampshire, sunrise is at 5:42 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 8:20 pm EDT.
Sunshine
The average sunshine in May is 8.6h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In May, an average UV index of 5 transforms into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. To protect against the Sun's most potent rays, avoid direct exposure around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Winchester, NH
- Average high temperature in May: 66.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in May: 46°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in May
Winchester, 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
Winchester, NH
- Average wind speed in May: 6.3mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Winchester, NH
- Average humidity in May: 74%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Winchester, NH
- Average rainfall in May: 2.2"
The wettest month (with the highest rainfall) is October (2.76").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in May
Winchester, NH
- Average rainfall days in May: 15 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in May
Winchester, NH
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Winchester, NH
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Winchester, 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 36min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in May
Winchester, NH
- Average sunshine days in May: 13.8 days
The months with the most sunshine days are January and November (16.7 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in May
Winchester, NH
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in May
Winchester, NH
- Average cloud cover in May: 45
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Winchester, NH
- Average visibility in May: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
