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
The onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 77.7°F (25.4°C) in August to an agreeable 71.2°F (21.8°C). In September, Luana reports a consistent average low-temperature of 52.3°F (11.3°C) during the nights.Humidity
The average relative humidity in September is 80%.Rainfall
In Luana, in September, it is raining for 12.4 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, there are 145.2 rainfall days, and 31.85" (809mm) of precipitation is accumulated.Snowfall
In Luana, snow does not fall in June through September.Daylight
In Luana, the average length of the day in September is 12h and 29min.On the first day of September in Luana, Iowa, sunrise is at 6:31 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:48 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Luana, 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 exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take necessary precautions - Defending against sun damage is advocated. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the usual temperature for Luana in September?
What is the average humidity in September in Luana?
How many days does it rain in September in Luana?
When it does not snow in Luana?
Does it snow in Luana in September?
How many hours of daylight does Luana have in September?
When is the sunrise / sunset in September in Luana?
How many hours of sunshine does Luana have in September?
How high is the UV index in September in Luana?
Average temperature in September
Luana, IA
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure in September
Luana, 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
Luana, IA
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in September
Luana, IA
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Luana, IA
- Average rainfall in September: 2.68"
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
Luana, IA
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in September
Luana, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Luana, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Luana, 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
Luana, IA
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in September
Luana, 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, November and December (UV index 1).
Average cloud cover in September
Luana, 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
Luana, 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).
Luana, Iowa, USA
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