August weather forecastNewmarket, NH
August
Weather in August
The weather in August is synonymous peak summer in Newmarket, nearly matching July's heat with an average high temperature of 76.8°F (24.9°C). This period sees a decrease in rainfall, resulting in drier conditions than the previous month. Despite the high temperatures, the generally clear skies and gentle winds make for great summer sightseeing and local leisure activities.Temperature
August's advent denotes a minor fluctuation in the average high-temperature to a still moderately hot 76.8°F (24.9°C) from July's 77.4°F (25.2°C). August nights cool down to an average low-temperature of 61.3°F (16.3°C).Humidity
The average relative humidity in August is 78%.Rainfall
In August, the rain falls for 13.1 days. Throughout August, 1.97" (50mm) of precipitation is accumulated. Throughout the year, there are 144.8 rainfall days, and 27.24" (692mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Newmarket.Daylight
In Newmarket, New Hampshire, the average length of the day in August is 13h and 53min.On the first day of the month, sunrise is at 5:35 am and sunset at 8:04 pm. On the last day of August, in Newmarket, sunrise is at 6:07 am and sunset at 7:19 pm EDT.
Sunshine
With an average of 10.6h of sunshine, August has the most sunshine of the year.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 6 during August translates into the following guidance:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Newmarket, NH
- Average high temperature in August: 76.8°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in August: 61.3°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in August
Newmarket, NH
- Average pressure in August: 29.97"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 August
Newmarket, NH
- Average wind speed in August: 6.2mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in August
Newmarket, NH
- Average humidity in August: 78%
The months with the highest relative humidity are January and February (80%).
The months with the lowest relative humidity are April and November (75%).
Average rainfall in August
Newmarket, NH
- Average rainfall in August: 1.97"
The wettest months (with the highest rainfall) are October and December (2.87").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in August
Newmarket, NH
- Average rainfall days in August: 13.1 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is February (7.6 days).
Average snowfall in August
Newmarket, NH
- Average snowfall in August: 0"
The month with the highest snowfall is December (4.53").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Newmarket, NH
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Newmarket, NH
- Average daylight in August: 13h and 54min
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 August: 10h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in August
Newmarket, NH
- Average sunshine days in August: 15.8 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in August
Newmarket, NH
- Average UV index in August: 6
The months with the highest UV index are 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 August
Newmarket, NH
- Average cloud cover in August: 30
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in August
Newmarket, NH
- Average visibility in August: 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).





