September weather forecastWindsor Heights, IA
September
Weather in September
September, the first month of the autumn in Windsor Heights, is still a warm month, with an average temperature varying between 55.9°F (13.3°C) and 75.6°F (24.2°C).Temperature
The onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 81.7°F (27.6°C) in August to a still moderately hot 75.6°F (24.2°C). Windsor Heights's nights in September experience an average temperature drop to a mild 55.9°F (13.3°C).Humidity
In Windsor Heights, the average relative humidity in September is 76%.Rainfall
In Windsor Heights, in September, it is raining for 11.5 days, with typically 2.68" (68mm) of accumulated precipitation. In Windsor Heights, during the entire year, the rain falls for 130.3 days and collects up to 25.91" (658mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Windsor Heights, the average length of the day in September is 12h and 28min.On the first day of September in Windsor Heights, sunrise is at 6:41 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:57 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Windsor Heights, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Windsor Heights, IA
- Average high temperature in September: 75.6°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 (27.9°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in September
Windsor Heights, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Windsor Heights, IA
- Average wind speed in September: 8mph
The windiest months (with the highest average wind speed) are January, March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Windsor Heights, IA
- Average humidity in September: 76%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Windsor Heights, IA
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in September
Windsor Heights, IA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Windsor Heights, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Windsor Heights, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Windsor Heights, IA
- Average daylight in September: 12h and 30min
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 12min).
- Average sunshine in September: 9h and 18min
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 18min).
Average sunshine days in September
Windsor Heights, IA
- Average sunshine days in September: 17 days
The months with the most sunshine days are November and December (18.7 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in September
Windsor Heights, IA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Windsor Heights, IA
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in September
Windsor Heights, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
