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 advent of September brings a subtle shift in temperature, with the average high moving from 82°F (27.8°C) in August to a still warm 76.6°F (24.8°C). Crescent's nighttime temperature in September drops to an average of 56.5°F (13.6°C).Humidity
In September, the average relative humidity is 72%.Rainfall
In Crescent, during September, the rain falls for 11.9 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Crescent, during the entire year, the rain falls for 114.7 days and collects up to 18.27" (464mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Crescent, Iowa, is 12h and 28min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:55 pm. On the last day of September, in Crescent, sunrise is at 7:19 am and sunset at 7:06 pm CDT.
Sunshine
The average sunshine in September is 9h.UV index
In Crescent, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk 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:
Guard yourself - Precautionary measures against sun damage are advocated. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Crescent in September?
What is the average humidity in September in Crescent?
How much does it rain in Crescent in September?
When it does not snow in Crescent?
Does it snow in Crescent in September?
How many hours of daylight does Crescent have in September?
When are sunrise and sunset in September in Crescent?
How long on average sun shines in September in Crescent?
What is the UV index reading in September in Crescent?
Average temperature in September
Crescent, IA
- Average high temperature in September: 76.6°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Crescent, IA
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Crescent, IA
- Average wind speed in September: 8.4mph
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
Crescent, IA
- Average humidity in September: 72%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Crescent, IA
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Crescent, IA
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Crescent, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Crescent, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Crescent, 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 12min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Crescent, IA
- Average sunshine days in September: 16 days
The month with the most sunshine days is December (22.5 days).
The month with the least sunshine days is June (12.1 days).
Average UV index in September
Crescent, IA
- Average UV index in September: 4
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, October, November and December (UV index 2).
Average cloud cover in September
Crescent, IA
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Crescent, 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).
Crescent, Iowa, USA
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