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
With the onset of September, the average high-temperature subtly recedes from August's 81.1°F (27.3°C) to a still warm 74.7°F (23.7°C). An average minimum temperature of 54.9°F (12.7°C) is recorded in Irondale during the month of September.Humidity
In Irondale, the average relative humidity in September is 79%.Rainfall
The month with the least rainfall in Irondale, Ohio, is September, when the rain falls for 14.7 days and typically collects 2.28" (58mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Irondale is 12h and 27min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:54 pm. On the last day of September, in Irondale, sunrise is at 7:19 am and sunset at 7:06 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
The average daily maximum UV index in September in Irondale is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Irondale?
What is the average humidity in September in Irondale?
What is the driest month in Irondale?
How many days does it rain in September in Irondale?
When it does not snow in Irondale?
Does it snow in Irondale in September?
What is the average length of the day in September in Irondale?
When are sunrise and sunset in September in Irondale?
How many hours of sunshine does Irondale have in September?
How high is the UV index in September in Irondale?
Average temperature in September
Irondale, OH
- Average high temperature in September: 74.7°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 54.9°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in September
Irondale, OH
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Irondale, OH
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Irondale, OH
- Average humidity in September: 79%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in September
Irondale, OH
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is April (3.27").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in September
Irondale, OH
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in September
Irondale, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Irondale, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Irondale, OH
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Irondale, OH
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is November (13.7 days).
The month with the least sunshine days is May (8.4 days).
Average UV index in September
Irondale, OH
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Irondale, OH
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Irondale, OH
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Irondale, Ohio, USA
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