September weather forecastNewmarket, NH
September
Weather in September
September in Newmarket introduces early autumnal features. In terms of temperature, it moderates to a comfortable high of 69.6°F (20.9°C) from August. Precipitation takes a dip resulting in a crisper, drier climate—firmly setting the stage for the beautiful fall season. A splendid mix of cool weather and changing foliage offers a stunning display of New Hampshire's picturesque beauty.Temperature
Newmarket, New Hampshire, observes a small decrease in the average high-temperature with the arrival of September, falling from August's moderately hot 76.8°F (24.9°C) to an agreeable 69.6°F (20.9°C). Newmarket, in September, witnesses an average low-temperature of 55°F (12.8°C).Humidity
In September, the average relative humidity is 79%.Rainfall
September is the month with the least rainfall in Newmarket. Rain falls for 11.4 days and accumulates 1.46" (37mm) of precipitation.Snowfall
In Newmarket, snow does not fall in May through September.Daylight
In Newmarket, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:08 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:40 am and sunset at 6:26 pm EDT.
Sunshine
In Newmarket, the average sunshine in September is 8.5h.UV index
In Newmarket, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Newmarket, NH
- Average high temperature in September: 69.6°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 September: 55°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 September
Newmarket, NH
- Average pressure in September: 30.05"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 September
Newmarket, NH
- Average wind speed in September: 7mph
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 September
Newmarket, NH
- Average humidity in September: 79%
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 September
Newmarket, NH
- Average rainfall in September: 1.46"
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 September
Newmarket, NH
- Average rainfall days in September: 11.4 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 September
Newmarket, NH
- Average snowfall in September: 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 September
Newmarket, NH
- Average snowfall days in September: 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 September /
Average sunshine in September
Newmarket, NH
- Average daylight in September: 12h and 30min
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 September: 8h and 30min
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 September
Newmarket, NH
- Average sunshine days in September: 16.5 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 September
Newmarket, NH
- Average UV index in September: 4
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 September
Newmarket, NH
- Average cloud cover in September: 33
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 September
Newmarket, NH
- Average visibility in September: 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).
