Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's onset introduces a mild reduction in the average high-temperature, from a moderately hot 77.9°F (25.5°C) in August to an agreeable 70.2°F (21.2°C). Throughout the month of September, Henniker expects an average low of 50.5°F (10.3°C).Humidity
In Henniker, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 12.3 days and accumulates 1.89" (48mm) of precipitation.Snowfall
In Henniker, snow does not fall in June through September.Daylight
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 6:44 am and sunset at 6:29 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, a regular UV index of 4 translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What is the usual temperature for Henniker in September?
What is the average humidity in September in Henniker?
What is the driest month in Henniker?
How much does it rain in Henniker in September?
When it does not snow in Henniker?
Does it snow in Henniker in September?
How many hours of daylight does Henniker have in September?
When is the sunrise / sunset in September in Henniker?
How many hours of sunshine does Henniker have in September?
What is the UV index reading in September in Henniker?
Average temperature in September
Henniker, NH
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in September: 50.5°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 (14.9°F).
Average pressure in September
Henniker, 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
Henniker, NH
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Henniker, NH
- Average humidity in September: 79%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Henniker, NH
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Henniker, NH
- Average rainfall days in September: 12.3 days
The months with the highest number of rainy days are May and June (15.8 days).
The month with the least rainy days is February (8.1 days).
Average snowfall in September
Henniker, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Henniker, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Henniker, NH
- Average daylight in September: 12h and 3min
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 2min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Henniker, NH
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is March (11.3 days).
Average UV index in September
Henniker, 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
Henniker, NH
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Henniker, NH
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Henniker, New Hampshire, USA
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