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
Nashua in September undergoes a slight reduction in the average high-temperature, shifting from August's moderately hot 77.9°F (25.5°C) to an agreeable 72.5°F (22.5°C). In Nashua, an average nighttime temperature of 53.4°F (11.9°C) is expected during September.Humidity
The average relative humidity in September is 79%.Rainfall
In Nashua, during September, the rain falls for 11 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Nashua, during the entire year, the rain falls for 127.3 days and collects up to 26.61" (676mm) of precipitation.Snowfall
In Nashua, snow does not fall in June through September.Daylight
In Nashua, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:52 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. 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.
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?
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 Nashua have in September?
What is the UV index intensity in September?
Average temperature in September
Nashua, IA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Nashua, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Nashua, IA
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Nashua, IA
- Average humidity in September: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Nashua, IA
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Nashua, IA
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (3.5 days).
Average snowfall in September
Nashua, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Nashua, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 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, IA
- 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 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Nashua, IA
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in September
Nashua, IA
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Nashua, IA
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Nashua, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Nashua, Iowa, USA
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