September weather forecastAlgona, IA
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Algona, Iowa, with an average temperature fluctuating between 73.4°F (23°C) and 54.5°F (12.5°C).Temperature
The introduction of September sees an average high-temperature of a still warm 73.4°F (23°C), hardly deviating from August. Algona, in September, experiences an average temperature of 54.5°F (12.5°C) at night.Humidity
The average relative humidity in September is 75%.Rainfall
In September, the rain falls for 9.5 days. Throughout September, 1.06" (27mm) of precipitation is accumulated. In Algona, during the entire year, the rain falls for 100.5 days and collects up to 11.69" (297mm) of precipitation.Snowfall
In Algona, snow does not fall in May through September.Daylight
In Algona, Iowa, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:14 am and sunset at 6:59 pm CDT.
Sunshine
In Algona, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Algona, IA
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Algona, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Algona, IA
- Average wind speed in September: 8.7mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in September
Algona, IA
- Average humidity in September: 75%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Algona, IA
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in September
Algona, IA
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is June (14.5 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in September
Algona, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Algona, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.8 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
Algona, IA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Algona, IA
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (12.8 days).
Average UV index in September
Algona, 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 December (UV index 1).
Average cloud cover in September
Algona, IA
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Algona, 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).
