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 signifies a minor drop in average high-temperature, transitioning from a warm 80.2°F (26.8°C) in August to a pleasant 72.5°F (22.5°C). During the month of September, the temperature in Nashua falls to an average of 53.8°F (12.1°C).Humidity
The average relative humidity in September in Nashua is 77%.Rainfall
September is the month with the least rainfall in Nashua. Rain falls for 7 days and accumulates 0.28" (7mm) of precipitation.Snowfall
In Nashua, 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 the month, sunrise is at 6:11 am and sunset at 7:19 pm. On the last day of September, in Nashua, sunrise is at 6:42 am and sunset at 6:28 pm EDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Nashua is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Nashua in September?
What is the average humidity in September in Nashua?
What is the driest month in Nashua?
How much does it rain in Nashua in September?
When it does not snow in Nashua?
Does it snow in Nashua in September?
How many hours of daylight does Nashua have in September?
When is the sunrise / sunset in September in Nashua?
How many hours of sunshine does Nashua have in September?
What is the UV index reading in September in Nashua?
Average temperature in September
Nashua, NH
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Nashua, 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
Nashua, NH
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in September
Nashua, NH
- Average humidity in September: 77%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Nashua, NH
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is November (0.79").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in September
Nashua, NH
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is June (10.4 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in September
Nashua, NH
- Average snowfall in September: 0"
The months with the highest snowfall are February and December (1.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Nashua, NH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nashua, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Nashua, NH
- Average sunshine days in September: 21.6 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in September
Nashua, NH
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Nashua, NH
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Nashua, NH
- Average visibility in September: 5mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
Nashua, New Hampshire, USA
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