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 transition into September subtly indicates a reduction in the average high-temperature, down to a still warm 75.6°F (24.2°C) from August's moderately hot 81.1°F (27.3°C). The average nighttime temperature lowers to a moderate 56.1°F (13.4°C) throughout September.Humidity
In Stringtown, the average relative humidity in September is 76%.Rainfall
In September, the rain falls for 10.4 days. Throughout September, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 115.1 rainfall days, and 19.21" (488mm) of precipitation is accumulated.Snowfall
In Stringtown, snow does not fall in May through September.Daylight
In Stringtown, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:14 am and sunset at 7:01 pm CDT.
Sunshine
In Stringtown, Iowa, the average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Undertake precautions - Guarding against sun damage is counselled. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Stringtown in September?
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?
When are sunrise and sunset in September?
How many hours of sunshine does Stringtown have in September?
How high is the UV index in September?
Average temperature in September
Stringtown, IA
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in September: 56.1°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°F).
Average pressure in September
Stringtown, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Stringtown, IA
- Average wind speed in September: 8.2mph
The windiest months (with the highest average wind speed) are March and April (10.5mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in September
Stringtown, IA
- Average humidity in September: 76%
The months with the highest relative humidity are January and June (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Stringtown, IA
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is June (3.74").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in September
Stringtown, IA
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Stringtown, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Stringtown, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stringtown, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Stringtown, IA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is May (12 days).
Average UV index in September
Stringtown, IA
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Stringtown, IA
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in September
Stringtown, 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).
Stringtown, Iowa, USA
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