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 start of September comes with a small reduction in the average high-temperature, subtly receding from 80.2°F (26.8°C) in August to a still warm 74.7°F (23.7°C). Yale encounters a steady low-temperature average of 55.9°F (13.3°C) throughout the month of September.Humidity
The average relative humidity in September is 76%.Rainfall
In September, in Yale, Iowa, the rain falls for 12.1 days. Throughout September, 2.87" (73mm) of precipitation is accumulated. Throughout the year, there are 137.1 rainfall days, and 28.62" (727mm) of precipitation is accumulated.Snowfall
In Yale, snow does not fall in June through September.Daylight
The average length of the day in September in Yale is 12h and 28min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:50 pm. On the last day of September, in Yale, sunrise is at 7:14 am and sunset at 7:00 pm CDT.
Sunshine
In Yale, Iowa, the average sunshine in September is 9.3h.UV index
In Yale, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the usual temperature for Yale in September?
What is the average humidity in September in Yale?
How many days does it rain in September in Yale?
When it does not snow in Yale?
Does it snow in Yale in September?
What is the average length of the day in September in Yale?
When is the sunrise / sunset in September in Yale?
How long on average sun shines in September in Yale?
What is the UV index reading in September in Yale?
Average temperature in September
Yale, IA
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in September
Yale, 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
Yale, IA
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in September
Yale, IA
- Average humidity in September: 76%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Yale, IA
- Average rainfall in September: 2.87"
The wettest month (with the highest rainfall) is June (4.41").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in September
Yale, IA
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in September
Yale, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Yale, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Yale, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Yale, IA
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (8.6 days).
Average UV index in September
Yale, 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
Yale, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Yale, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
Yale, Iowa, USA
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