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
As September begins, there is a minor decrease in the average high-temperature, softly falling from a moderately hot 77°F (25°C) in August to an agreeable 71.6°F (22°C). During September, the temperature tends to dip to an average of 58.3°F (14.6°C) at night.Humidity
In September, the average relative humidity in Norwalk is 79%.Rainfall
In Norwalk, during September, the rain falls for 14.6 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 174.1 rainfall days, and 31.38" (797mm) of precipitation is accumulated.Snowfall
In Norwalk, Ohio, snow does not fall in June through September.Daylight
In Norwalk, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:57 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:13 pm EDT.
Sunshine
In Norwalk, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Norwalk have in September?
When are sunrise and sunset in September in Norwalk?
How many hours of sunshine does Norwalk have in September?
What is the UV index reading in September?
Average temperature in September
Norwalk, OH
- Average high temperature in September: 71.6°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 (30.6°F).
- Average low temperature in September: 58.3°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Norwalk, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Norwalk, OH
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is January (11.5mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in September
Norwalk, OH
- Average humidity in September: 79%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall in September
Norwalk, OH
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is June (3.9").
The driest months (with the least rainfall) are February and December (1.85").
Average rainfall days in September
Norwalk, OH
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Norwalk, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Norwalk, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Norwalk, OH
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Norwalk, OH
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is November (13.2 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in September
Norwalk, OH
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Norwalk, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Norwalk, OH
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Norwalk, Ohio, USA
Weather forecast for your location
2. Allow the app to use your location