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 warm 74.8°F (23.8°C) in August to a comfortable 67.6°F (19.8°C). Throughout the month of September, the nighttime temperature dips to an average of 47.3°F (8.5°C).Humidity
The average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall. Rain falls for 6.6 days and accumulates 0.39" (10mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Jackson, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:08 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:26 pm EDT.
Sunshine
In Jackson, the average sunshine in September is 8.6h.UV index
In Jackson, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 3 during September morphs into the following directions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Jackson have in September?
How high is the UV index in September?
Average temperature in September
Jackson, NH
- Average high temperature in September: 67.6°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 (55.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Jackson, 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
Jackson, NH
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
Jackson, NH
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Jackson, NH
- Average rainfall in September: 0.39"
The wettest months (with the highest rainfall) are April and October (1.46").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in September
Jackson, NH
- Average rainfall days in September: 6.6 days
The months with the highest number of rainy days are May and July (10.3 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in September
Jackson, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Jackson, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Jackson, NH
- Average daylight in September: 12h and 3min
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 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Jackson, NH
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is June (18.2 days).
Average UV index in September
Jackson, NH
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in September
Jackson, NH
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Jackson, NH
- Average visibility in September: 4mi
The months with the highest visibility are April, May, June, July, August, November and December (5mi).
The months with the lowest visibility are January, February, March, September and October (4mi).
Jackson, New Hampshire, USA
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