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
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a warm 76.6°F (24.8°C) in August to a pleasant 68.9°F (20.5°C). An average low-temperature of 49.1°F (9.5°C) is expected in Holderness during September.Humidity
The average relative humidity in September is 80%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.7 days and typically collects 1.81" (46mm) of precipitation.Snowfall
In Holderness, snow does not fall in June through September.Daylight
The average length of the day in September in Holderness is 12h and 29min.On the first day of the month, sunrise is at 6:10 am and sunset at 7:21 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:28 pm EDT.
Sunshine
In Holderness, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 3 in September translates into these instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. It's recommended to limit sun exposure when its radiation is at its peak during midday. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
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?
How many hours of daylight does Holderness have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Holderness have in September?
What is the UV index reading in September in Holderness?
Average temperature in September
Holderness, NH
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (25.7°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Holderness, 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 (29.91"Hg).
Average wind speed in September
Holderness, NH
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is January (7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Holderness, NH
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in September
Holderness, NH
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in September
Holderness, NH
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is February (9.4 days).
Average snowfall in September
Holderness, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Holderness, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Holderness, 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: 9h and 0min).
- Average sunshine in September: 8h and 2min
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 6min).
Average sunshine days in September
Holderness, NH
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is March (10.6 days).
Average UV index in September
Holderness, NH
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Holderness, NH
- Average cloud cover in September: 40
The months with the most cloud cover are February and March (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Holderness, NH
- Average visibility in September: 4mi
The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).
Holderness, New Hampshire, USA
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