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
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a moderately hot 81.1°F (27.3°C) in August to a still warm 74.8°F (23.8°C). Throughout the month of September, the nighttime temperature dips to an average of 54.5°F (12.5°C).Humidity
The average relative humidity in September in Hawarden, Iowa, is 71%.Rainfall
In Hawarden, in September, during 7.7 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, in Hawarden, there are 80.7 rainfall days, and 6.54" (166mm) of precipitation is accumulated.Snowfall
In Hawarden, snow does not fall in June through September.Daylight
In September, the average length of the day in Hawarden is 12h and 29min.On the first day of September in Hawarden, sunrise is at 6:51 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:08 pm CDT.
Sunshine
The average sunshine in September in Hawarden is 8.7h.UV index
The average daily maximum UV index in September in Hawarden is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hawarden in September?
What is the average humidity in September in Hawarden?
How many days does it rain in September in Hawarden?
When it does not snow in Hawarden?
Does it snow in Hawarden in September?
How many hours of daylight does Hawarden have in September?
When is the sunrise / sunset in September in Hawarden?
How many hours of sunshine does Hawarden have in September?
How high is the UV index in September in Hawarden?
Average temperature in September
Hawarden, IA
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in September
Hawarden, IA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Hawarden, IA
- Average wind speed in September: 9.2mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in September
Hawarden, IA
- Average humidity in September: 71%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Hawarden, IA
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is June (1.06").
The driest months (with the least rainfall) are January and February (0.16").
Average rainfall days in September
Hawarden, IA
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is June (13 days).
The month with the least rainy days is February (1.3 days).
Average snowfall in September
Hawarden, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hawarden, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Hawarden, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Hawarden, IA
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is December (26 days).
The month with the least sunshine days is June (13.2 days).
Average UV index in September
Hawarden, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Hawarden, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Hawarden, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hawarden, Iowa, USA
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