September weather forecastWaukon, IA
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Waukon, Iowa, with an average temperature ranging between max 71.2°F (21.8°C) and min 52°F (11.1°C).Temperature
The onset of September aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 77.5°F (25.3°C) in August to an agreeable 71.2°F (21.8°C). Throughout September, the average low-temperature in Waukon dips to a cool 52°F (11.1°C).Humidity
In Waukon, the average relative humidity in September is 80%.Rainfall
In September, in Waukon, the rain falls for 12.8 days. Throughout September, 2.56" (65mm) of precipitation is accumulated. In Waukon, during the entire year, the rain falls for 144.7 days and collects up to 30.94" (786mm) of precipitation.Snowfall
In Waukon, snow does not fall in June through September.Daylight
In Waukon, Iowa, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:30 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:48 pm CDT.
Sunshine
In September, the average sunshine in Waukon is 8.9h.UV index
The average daily maximum UV index in September in Waukon is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Waukon, IA
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in September
Waukon, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Waukon, IA
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in September
Waukon, IA
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Waukon, IA
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is June (5.24").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Waukon, IA
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Waukon, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Waukon, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Waukon, IA
- Average daylight in September: 12h and 30min
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 0min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Waukon, IA
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is June (7.6 days).
Average UV index in September
Waukon, IA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Waukon, IA
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Waukon, IA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
