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 arrival aligns with a minor decrease in average high-temperatures, from August's moderately hot 77.9°F (25.5°C) to an agreeable 70.2°F (21.2°C). Nighttime temperatures in West Chesterfield hover around an average low of 50.9°F (10.5°C) in September.Humidity
In West Chesterfield, the average relative humidity in September is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 6.8 days and typically collects 0.43" (11mm) of precipitation.Snowfall
In West Chesterfield, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September in West Chesterfield, sunrise is at 6:15 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:32 pm EDT.
Sunshine
In September, the average sunshine in West Chesterfield is 8.6h.UV index
In September, the average daily maximum UV index in West Chesterfield is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in West Chesterfield?
What is the average humidity in September in West Chesterfield?
What is the driest month in West Chesterfield?
How many days does it rain in September in West Chesterfield?
When it does not snow in West Chesterfield?
Does it snow in West Chesterfield in September?
How many hours of daylight does West Chesterfield have in September?
What time are sunrise and sunset in September in West Chesterfield?
How long on average sun shines in September in West Chesterfield?
How high is the UV index in September in West Chesterfield?
Average temperature in September
West Chesterfield, 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 (27.9°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
West Chesterfield, NH
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
West Chesterfield, NH
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
West Chesterfield, 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
West Chesterfield, NH
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is November (0.87").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in September
West Chesterfield, NH
- Average rainfall days in September: 6.8 days
The month with the highest number of rainy days is May (10 days).
The months with the least rainy days are January and February (4.3 days).
Average snowfall in September
West Chesterfield, NH
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
West Chesterfield, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
West Chesterfield, 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 4min
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 24min).
Average sunshine days in September
West Chesterfield, NH
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is July (17.6 days).
Average UV index in September
West Chesterfield, NH
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
West Chesterfield, NH
- Average cloud cover in September: 37
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
West Chesterfield, NH
- Average visibility in September: 5mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
West Chesterfield, New Hampshire, USA
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