September weather forecastChichester, NH
September
Weather in September
September, the first month of the autumn in Chichester, is also an agreeable month, with an average temperature ranging between min 51.6°F (10.9°C) and max 70.5°F (21.4°C).Temperature
The onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 78.4°F (25.8°C) in August to a pleasant 70.5°F (21.4°C). Chichester temperatures generally rest at a low of 51.6°F (10.9°C) during the September nights.Humidity
In September, the average relative humidity in Chichester is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 1.57" (40mm) of precipitation.Snowfall
June through September are months without snowfall in Chichester.Daylight
In September, the average length of the day in Chichester is 12h and 29min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:20 pm. On the last day of September, in Chichester, New Hampshire, sunrise is at 6:42 am and sunset at 6:28 pm EDT.
Sunshine
In Chichester, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Chichester, NH
- Average high temperature in September: 70.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 51.6°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 (15.3°F).
Average pressure in September
Chichester, 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
Chichester, NH
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Chichester, NH
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Chichester, NH
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in September
Chichester, NH
- Average rainfall days in September: 11.2 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in September
Chichester, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Chichester, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Chichester, 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 0min).
- 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
Chichester, NH
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is March (13.1 days).
Average UV index in September
Chichester, 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, October, November and December (UV index 2).
Average cloud cover in September
Chichester, NH
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Chichester, NH
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
