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 arrival aligns with a minor decrease in average high-temperatures, from August's warm 81.1°F (27.3°C) to a still moderately hot 75.6°F (24.2°C). An average low-temperature of 56.3°F (13.5°C) is observed during the September nights.Humidity
In September, the average relative humidity is 74%.Rainfall
In Carson, in September, it is raining for 9.1 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 105.3 rainfall days, and 12.24" (311mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:48 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:04 pm CDT.
Sunshine
The average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 5 suggests these recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Carson have in September?
What is the UV index intensity in September?
Average temperature in September
Carson, IA
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in September
Carson, 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
Carson, IA
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Carson, IA
- Average humidity in September: 74%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (68%).
Average rainfall in September
Carson, IA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is February (0.35").
Average rainfall days in September
Carson, IA
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is June (14.8 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Carson, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Carson, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Carson, 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 1min
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 36min).
Average sunshine days in September
Carson, IA
- Average sunshine days in September: 18 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in September
Carson, IA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Carson, IA
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Carson, 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).
Carson, Iowa, USA
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