September weather forecastBartlett, NH
September
Weather in September
September, the first month of the autumn in Bartlett, is still a refreshing month, with temperature in the range of an average high of 67.5°F (19.7°C) and an average low of 47.3°F (8.5°C).Temperature
The beginning of September brings a minor change in the average high-temperature, shifting from a warm 74.5°F (23.6°C) in August to a comfortable 67.5°F (19.7°C). Bartlett records an average low-temperature of 47.3°F (8.5°C) throughout the month of September.Humidity
In Bartlett, the average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall in Bartlett. Rain falls for 12.7 days and accumulates 2.01" (51mm) of precipitation.Snowfall
In Bartlett, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 6:08 am and sunset at 7:20 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:27 pm EDT.
Sunshine
In Bartlett, New Hampshire, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 3 in September transforms into this advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bartlett, NH
- Average high temperature in September: 67.5°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is July (54.9°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in September
Bartlett, 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 (29.91"Hg).
Average wind speed in September
Bartlett, NH
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Bartlett, NH
- Average humidity in September: 80%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Bartlett, NH
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is October (3.9").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Bartlett, NH
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (10.9 days).
Average snowfall in September
Bartlett, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (16.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Bartlett, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bartlett, NH
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Bartlett, NH
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in September
Bartlett, NH
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Bartlett, NH
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Bartlett, NH
- Average visibility in September: 4mi
The months with the highest visibility are May, June, July, August and November (5mi).
The months with the lowest visibility are January, February, March, April, September, October and December (4mi).
