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
The onset of September is marked by a minor decrease in temperature, transitioning from a warm 76.8°F (24.9°C) in August to a pleasant 71.4°F (21.9°C). Throughout September, Saint Ansgar experiences a low-temperature average of 52.9°F (11.6°C).Humidity
In Saint Ansgar, Iowa, the average relative humidity in September is 79%.Rainfall
In Saint Ansgar, in September, during 12.1 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Saint Ansgar, during the entire year, the rain falls for 135.3 days and collects up to 26.54" (674mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Saint Ansgar, the average length of the day in September is 12h and 29min.On the first day of September in Saint Ansgar, sunrise is at 6:36 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:53 pm CDT.
Sunshine
The average sunshine in September in Saint Ansgar is 8.9h.UV index
In Saint Ansgar, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What is the usual temperature for Saint Ansgar in September?
What is the average humidity in September in Saint Ansgar?
How many days does it rain in September in Saint Ansgar?
When it does not snow in Saint Ansgar?
Does it snow in Saint Ansgar in September?
What is the average length of the day in September in Saint Ansgar?
When is the sunrise / sunset in September in Saint Ansgar?
How many hours of sunshine does Saint Ansgar have in September?
How high is the UV index in September in Saint Ansgar?
Average temperature in September
Saint Ansgar, IA
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure in September
Saint Ansgar, IA
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Saint Ansgar, IA
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in September
Saint Ansgar, IA
- Average humidity in September: 79%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Saint Ansgar, IA
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Saint Ansgar, IA
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is June (19.2 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Saint Ansgar, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (6.46").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saint Ansgar, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint Ansgar, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Saint Ansgar, IA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.5 days).
Average UV index in September
Saint Ansgar, 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, November and December (UV index 1).
Average cloud cover in September
Saint Ansgar, IA
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Saint Ansgar, IA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
Saint Ansgar, Iowa, USA
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