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
With the onset of September, Cascade's average high-temperature slightly adjusts, moderately receding from August's moderately hot 78.6°F (25.9°C) to an agreeable 72.7°F (22.6°C). In Cascade, September's nights observe an average temperature dip to a fresh 53.4°F (11.9°C).Humidity
The average relative humidity in September is 79%.Rainfall
In Cascade, in September, during 11.9 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, in Cascade, there are 140.9 rainfall days, and 28.7" (729mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Cascade.Daylight
The average length of the day in September in Cascade, Iowa, is 12h and 28min.On the first day of September in Cascade, sunrise is at 6:30 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:46 pm CDT.
Sunshine
In Cascade, Iowa, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September in Cascade is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Take precautions - Protection against sun damage is advised. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What is the average September temperature in Cascade?
What is the average humidity in September in Cascade?
How much does it rain in Cascade in September?
When it does not snow in Cascade?
Does it snow in Cascade in September?
What is the average length of the day in September in Cascade?
When is the sunrise / sunset in September in Cascade?
How long on average sun shines in September in Cascade?
How high is the UV index in September in Cascade?
Average temperature in September
Cascade, IA
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (24.6°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in September
Cascade, 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 (29.9"Hg).
Average wind speed in September
Cascade, IA
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in September
Cascade, IA
- Average humidity in September: 79%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Cascade, IA
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days in September
Cascade, IA
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Cascade, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Cascade, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cascade, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Cascade, IA
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is December (17.3 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in September
Cascade, 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
Cascade, IA
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Cascade, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Cascade, Iowa, USA
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