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
September observes an average high-temperature of a still warm 74.8°F (23.8°C), marking an insignificant difference from August's 79.7°F (26.5°C). Nightly temperatures in Koszta drop to an average low of 55.2°F (12.9°C) in September.Humidity
The average relative humidity in September is 77%.Rainfall
In Koszta, during September, the rain falls for 12.4 days and regularly aggregates up to 2.76" (70mm) of precipitation. Throughout the year, there are 141.8 rainfall days, and 29.61" (752mm) of precipitation is accumulated.Snowfall
In Koszta, snow does not fall in June through September.Daylight
In Koszta, Iowa, the average length of the day in September is 12h and 28min.On the first day of September in Koszta, sunrise is at 6:35 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:51 pm CDT.
Sunshine
In Koszta, the average sunshine in September is 9.3h.UV index
In Koszta, Iowa, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Koszta?
What is the average humidity in September in Koszta?
How much does it rain in Koszta in September?
When it does not snow in Koszta?
Does it snow in Koszta in September?
What is the average length of the day in September in Koszta?
When are sunrise and sunset in September in Koszta?
How many hours of sunshine does Koszta have in September?
How high is the UV index in September in Koszta?
Average temperature in September
Koszta, IA
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 55.2°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
Koszta, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Koszta, IA
- Average wind speed in September: 8mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Koszta, IA
- Average humidity in September: 77%
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Koszta, IA
- Average rainfall in September: 2.76"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in September
Koszta, IA
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Koszta, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Koszta, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Koszta, 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 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Koszta, IA
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Koszta, 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 January (UV index 1).
Average cloud cover in September
Koszta, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in September
Koszta, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Koszta, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location