September weather forecastSheldahl, IA
September
Weather in September
September, the first month of the autumn in Sheldahl, is also a moderately hot month, with temperature in the range of an average high of 74.8°F (23.8°C) and an average low of 55.9°F (13.3°C).Temperature
As Sheldahl enters September, the average high-temperature subtly lowers from the a moderately hot 80.2°F (26.8°C) of August to a still warm 74.8°F (23.8°C). Sheldahl experiences a mean temperature of 55.9°F (13.3°C) during September nights.Humidity
In September, the average relative humidity is 76%.Rainfall
In Sheldahl, Iowa, during September, the rain falls for 11.9 days and regularly aggregates up to 3.11" (79mm) of precipitation. Throughout the year, there are 141.4 rainfall days, and 29.65" (753mm) of precipitation is accumulated.Snowfall
In Sheldahl, Iowa, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:11 am and sunset at 6:57 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In Sheldahl, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Take precautions - Protection against skin and eye damage is obliged. To avoid the Sun's strongest rays, limit exposure around the mid-day period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sheldahl, IA
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (26.6°F).
- Average low temperature in September: 55.9°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 (13.6°F).
Average pressure in September
Sheldahl, IA
- Average pressure in September: 30.01"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
Sheldahl, IA
- Average wind speed in September: 8.1mph
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
Sheldahl, IA
- Average humidity in September: 76%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Sheldahl, IA
- Average rainfall in September: 3.11"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Sheldahl, IA
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is June (19.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Sheldahl, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sheldahl, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sheldahl, 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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Sheldahl, IA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is June (8.4 days).
Average UV index in September
Sheldahl, 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
Sheldahl, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in September
Sheldahl, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
