September weather forecastState Center, IA
September
Weather in September
The first month of the autumn, September, is still a warm month in State Center, Iowa, with an average temperature ranging between max 74.7°F (23.7°C) and min 55.4°F (13°C).Temperature
State Center marks the start of September with an average high-temperature of a still warm 74.7°F (23.7°C), hinting at a slight fluctuation from August's 79.5°F (26.4°C). During the month of September, the temperature falls to an average of 55.4°F (13°C).Humidity
In September, the average relative humidity in State Center, Iowa, is 77%.Rainfall
In State Center, during September, the rain falls for 9.5 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in State Center, there are 102 rainfall days, and 10.59" (269mm) of precipitation is accumulated.Snowfall
In State Center, snow does not fall in June through September.Daylight
In State Center, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:55 pm CDT.
Sunshine
In September, the average sunshine in State Center is 9.3h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary 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. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
State Center, IA
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in September
State Center, 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
State Center, IA
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
State Center, IA
- Average humidity in September: 77%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
State Center, IA
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (1.69").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in September
State Center, IA
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
State Center, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
State Center, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
State Center, IA
- Average daylight in September: 12h and 30min
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 18min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
State Center, IA
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in September
State Center, 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, February, October, November and December (UV index 2).
Average cloud cover in September
State Center, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in September
State Center, 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).
