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
Perry records an average high-temperature of a still warm 75.4°F (24.1°C) as September arrives, nearly mirroring the previous month's climate. During the nights in September, Perry experiences a consistent average temperature of 55.9°F (13.3°C).Humidity
In September, the average relative humidity is 76%.Rainfall
In Perry, in September, it is raining for 11.8 days, with typically 2.95" (75mm) of accumulated precipitation. In Perry, during the entire year, the rain falls for 131.7 days and collects up to 26.65" (677mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:59 pm CDT.
Sunshine
The average sunshine in September in Perry is 9.3h.UV index
In September, the average daily maximum UV index in Perry is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 during September leads to these advisories:
Exercise prevention - Precautions against solar damage are endorsed. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What are September temperatures in Perry?
What is the average humidity in September in Perry?
How many days does it rain in September in Perry?
When it does not snow in Perry?
Does it snow in Perry in September?
How many hours of daylight does Perry have in September?
What time are sunrise and sunset in September in Perry?
How many hours of sunshine does Perry have in September?
How high is the UV index in September in Perry?
Average temperature in September
Perry, IA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in September
Perry, 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
Perry, IA
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Perry, 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 (69%).
Average rainfall in September
Perry, IA
- Average rainfall in September: 2.95"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in September
Perry, IA
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Perry, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Perry, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Perry, 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 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Perry, IA
- Average sunshine days in September: 16.2 days
The months with the most sunshine days are October, November and December (18.9 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in September
Perry, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (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
Perry, IA
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in September
Perry, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Perry, Iowa, USA
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