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's onset introduces a mild reduction in the average high-temperature, from 81.1°F (27.3°C) in August to a still warm 75.7°F (24.3°C). In September, Fredonia experiences a temperature dip to an average of 56.3°F (13.5°C) at night.Humidity
The average relative humidity in September is 76%.Rainfall
In Fredonia, in September, during 6.7 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Fredonia, during the entire year, the rain falls for 81.9 days and collects up to 6.69" (170mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Fredonia, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:37 pm. On the last day of September, in Fredonia, sunrise is at 7:01 am and sunset at 6:48 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Make use of precautions - It is urged to ward off sun damage. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the usual temperature for Fredonia in September?
What is the average humidity in September in Fredonia?
How many days does it rain in September in Fredonia?
When it does not snow in Fredonia?
Does it snow in Fredonia in September?
What is the average length of the day in September in Fredonia?
When are sunrise and sunset in September in Fredonia?
How long on average sun shines in September in Fredonia?
What is the UV index reading in September in Fredonia?
Average temperature in September
Fredonia, IA
- Average high temperature in September: 75.7°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 (28.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
Fredonia, 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 (29.9"Hg).
Average wind speed in September
Fredonia, IA
- Average wind speed in September: 7.8mph
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 (6.8mph).
Average humidity in September
Fredonia, IA
- Average humidity in September: 76%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Fredonia, IA
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are February and December (0.28").
Average rainfall days in September
Fredonia, IA
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is June (11 days).
The month with the least rainy days is January (3 days).
Average snowfall in September
Fredonia, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Fredonia, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Fredonia, 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 18min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in September
Fredonia, IA
- Average sunshine days in September: 20.9 days
The month with the most sunshine days is December (25.3 days).
The month with the least sunshine days is June (14.8 days).
Average UV index in September
Fredonia, 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
Fredonia, IA
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Fredonia, 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).
Fredonia, Iowa, USA
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