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
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 77.5°F (25.3°C) in August to an agreeable 69.8°F (21°C). West Peterborough's nighttime temperature in September falls to an average of 51.4°F (10.8°C).Humidity
In West Peterborough, the average relative humidity in September is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 12.5 days and accumulates 2.2" (56mm) of precipitation.Snowfall
In West Peterborough, 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 6:13 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:30 pm EDT.
Sunshine
In September, the average sunshine is 7.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in West Peterborough in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does West Peterborough have in September?
When are sunrise and sunset in September?
How many hours of sunshine does West Peterborough have in September?
What is the UV index reading in September?
Average temperature in September
West Peterborough, NH
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 51.4°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
West Peterborough, 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
West Peterborough, NH
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are January and February (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
West Peterborough, 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 Peterborough, NH
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is October (3.39").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
West Peterborough, NH
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in September
West Peterborough, NH
- Average snowfall in September: 0"
The month with the highest snowfall is February (9.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
West Peterborough, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
West Peterborough, 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: 7h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
West Peterborough, NH
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is March (11.9 days).
Average UV index in September
West Peterborough, NH
- Average UV index in September: 3
The month with the highest UV index is July (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
West Peterborough, NH
- Average cloud cover in September: 42
The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in September
West Peterborough, NH
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
West Peterborough, New Hampshire, USA
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