September weather forecastWilton, NH
September
Weather in September
September, the first month of the autumn in Wilton, is still a pleasant month, with an average temperature varying between 52.5°F (11.4°C) and 71.8°F (22.1°C).Temperature
In Wilton, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 79.3°F (26.3°C) to an agreeable 71.8°F (22.1°C). Throughout September, the temperature falls to an average low of 52.5°F (11.4°C).Humidity
In September, the average relative humidity in Wilton is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 11.4 days and accumulates 1.61" (41mm) of precipitation.Snowfall
In Wilton, snow does not fall in June through September.Daylight
In Wilton, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:12 am and sunset at 7:21 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:29 pm EDT.
Sunshine
In Wilton, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index in Wilton is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Wilton, NH
- Average high temperature in September: 71.8°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in September: 52.5°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Wilton, NH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Wilton, NH
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Wilton, NH
- Average humidity in September: 78%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Wilton, NH
- Average rainfall in September: 1.61"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in September
Wilton, NH
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in September
Wilton, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Wilton, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wilton, 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 24min
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 September
Wilton, NH
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in September
Wilton, 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
Wilton, NH
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Wilton, NH
- Average visibility in September: 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).
