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 entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 80.6°F (27°C) in August to a still warm 74.7°F (23.7°C). During the nights in September, Killduff experiences a consistent average temperature of 55.8°F (13.2°C).Humidity
In Killduff, the average relative humidity in September is 77%.Rainfall
In Killduff, in September, it is raining for 9.6 days, with typically 1.3" (33mm) of accumulated precipitation. Throughout the year, there are 106.7 rainfall days, and 11.77" (299mm) of precipitation is accumulated.Snowfall
In Killduff, snow does not fall in June through September.Daylight
In September, the average length of the day in Killduff is 12h and 28min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:44 pm. On the last day of September, in Killduff, sunrise is at 7:08 am and sunset at 6:54 pm CDT.
Sunshine
In Killduff, the average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index in Killduff is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Killduff?
What is the average humidity in September in Killduff?
How much does it rain in Killduff in September?
When it does not snow in Killduff?
Does it snow in Killduff in September?
How many hours of daylight does Killduff have in September?
What time are sunrise and sunset in September in Killduff?
How many hours of sunshine does Killduff have in September?
How high is the UV index in September in Killduff?
Average temperature in September
Killduff, IA
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in September
Killduff, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Killduff, IA
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Killduff, IA
- Average humidity in September: 77%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Killduff, IA
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is May (2.13").
The driest months (with the least rainfall) are January, February and December (0.39").
Average rainfall days in September
Killduff, IA
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in September
Killduff, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Killduff, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Killduff, IA
- Average daylight in September: 12h and 3min
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 2min
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 12min).
Average sunshine days in September
Killduff, IA
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in September
Killduff, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Killduff, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in September
Killduff, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Killduff, Iowa, USA
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