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 arrival of September correlates with a minor temperature reduction, down from August's moderately hot 79.3°F (26.3°C) to a still warm 73.8°F (23.2°C). Calumet reports a consistent average low-temperature of 55°F (12.8°C) throughout September nights.Humidity
In Calumet, the average relative humidity in September is 73%.Rainfall
In Calumet, during September, the rain falls for 10.6 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, in Calumet, there are 117 rainfall days, and 19.84" (504mm) of precipitation is accumulated.Snowfall
In Calumet, snow does not fall in June through September.Daylight
In Calumet, the average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:04 pm CDT.
Sunshine
In Calumet, Iowa, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 4 during September leads to these instructions:
Ensure safety - Sun damage prevention is strongly urged. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Calumet?
What is the average humidity in September in Calumet?
How much does it rain in Calumet in September?
When it does not snow in Calumet?
Does it snow in Calumet in September?
What is the average length of the day in September in Calumet?
When are sunrise and sunset in September in Calumet?
How long on average sun shines in September in Calumet?
What is the UV index intensity in September in Calumet?
Average temperature in September
Calumet, IA
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in September
Calumet, IA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Calumet, IA
- Average wind speed in September: 9mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in September
Calumet, IA
- Average humidity in September: 73%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in September
Calumet, IA
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is June (3.15").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Calumet, IA
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in September
Calumet, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Calumet, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Calumet, IA
- Average daylight in September: 12h and 3min
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 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Calumet, IA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in September
Calumet, 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 January (UV index 1).
Average cloud cover in September
Calumet, 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 July (Cloud cover 28).
Average visibility in September
Calumet, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Calumet, Iowa, USA
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