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
As Wall Lake welcomes September, the average high-temperature records at a still warm 74.1°F (23.4°C), marking an insignificant deviation from the prior month. Throughout the month of September, Wall Lake reports a steady low-temperature average of 55.2°F (12.9°C).Humidity
In Wall Lake, the average relative humidity in September is 74%.Rainfall
In September, in Wall Lake, the rain falls for 11.5 days. Throughout September, 1.65" (42mm) of precipitation is accumulated. Throughout the year, there are 107.9 rainfall days, and 15.04" (382mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Wall Lake.Daylight
In Wall Lake, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:46 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:03 pm CDT.
Sunshine
In Wall Lake, Iowa, the average sunshine in September is 9.1h.UV index
In Wall Lake, Iowa, 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 the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Adopt protective measures - It is advised to guard against sun damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What are September temperatures in Wall Lake?
What is the average humidity in September in Wall Lake?
How much does it rain in Wall Lake in September?
When it does not snow in Wall Lake?
Does it snow in Wall Lake in September?
How many hours of daylight does Wall Lake have in September?
When are sunrise and sunset in September in Wall Lake?
How long on average sun shines in September in Wall Lake?
How high is the UV index in September in Wall Lake?
Average temperature in September
Wall Lake, IA
- Average high temperature in September: 74.1°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in September
Wall Lake, IA
- Average pressure in September: 30"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
Wall Lake, IA
- Average wind speed in September: 8.7mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in September
Wall Lake, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is April (67%).
Average rainfall in September
Wall Lake, IA
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Wall Lake, IA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2.5 days).
Average snowfall in September
Wall Lake, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Wall Lake, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wall Lake, 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 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Wall Lake, IA
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12 days).
Average UV index in September
Wall Lake, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Wall Lake, IA
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Wall Lake, 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).
Wall Lake, Iowa, USA
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