September weather forecastEricson, IA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Ericson, Iowa, with an average temperature fluctuating between 55.8°F (13.2°C) and 74.8°F (23.8°C).Temperature
The advent of September reveals an average high-temperature of a still moderately hot 74.8°F (23.8°C), showing minimal difference from the prior month. During September, Ericson's temperature averages to a refreshing 55.8°F (13.2°C) at night.Humidity
In September, the average relative humidity in Ericson is 76%.Rainfall
In Ericson, in September, it is raining for 9.6 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 103.9 rainfall days, and 13.46" (342mm) of precipitation is accumulated.Snowfall
In Ericson, snow does not fall in June through September.Daylight
In September, the average length of the day in Ericson is 12h and 28min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:11 am and sunset at 6:57 pm CDT.
Sunshine
In Ericson, the average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ericson, IA
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (26.4°F).
- Average low temperature in September: 55.8°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in September
Ericson, 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
Ericson, IA
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in September
Ericson, IA
- Average humidity in September: 76%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Ericson, IA
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Ericson, IA
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in September
Ericson, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Ericson, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ericson, 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 0min).
Average sunshine days in September
Ericson, IA
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (14 days).
Average UV index in September
Ericson, 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
Ericson, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in September
Ericson, 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).
