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
Dover Mills in September undergoes a slight reduction in the average high-temperature, shifting from August's warm 77.5°F (25.3°C) to an agreeable 71.4°F (21.9°C). During the month of September, an average temperature of 52.9°F (11.6°C) is noted during the nights.Humidity
In September, the average relative humidity in Dover Mills is 80%.Rainfall
In Dover Mills, Iowa, during September, the rain falls for 12.1 days and regularly aggregates up to 2.44" (62mm) of precipitation. Throughout the year, there are 146.5 rainfall days, and 31.3" (795mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Dover Mills.Daylight
The average length of the day in September in Dover Mills is 12h and 29min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:41 pm. On the last day of September, in Dover Mills, Iowa, sunrise is at 7:03 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index in Dover Mills is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Ensure safety - Sun damage prevention is strongly urged. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What is the usual temperature for Dover Mills in September?
What is the average humidity in September in Dover Mills?
How many days does it rain in September in Dover Mills?
When it does not snow in Dover Mills?
Does it snow in Dover Mills in September?
What is the average length of the day in September in Dover Mills?
What time are sunrise and sunset in September in Dover Mills?
How many hours of sunshine does Dover Mills have in September?
What is the UV index intensity in September in Dover Mills?
Average temperature in September
Dover Mills, IA
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in September
Dover Mills, IA
- Average pressure in September: 30.02"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
Dover Mills, IA
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Dover Mills, IA
- Average humidity in September: 80%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall in September
Dover Mills, IA
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is June (5.08").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Dover Mills, IA
- Average rainfall days in September: 12.1 days
The months with the highest number of rainy days are May and June (19.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Dover Mills, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Dover Mills, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dover Mills, 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 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
Dover Mills, IA
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is November (16.2 days).
The month with the least sunshine days is June (7.9 days).
Average UV index in September
Dover Mills, IA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Dover Mills, IA
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Dover Mills, IA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Dover Mills, Iowa, USA
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