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 dawn of September sees an average high-temperature of a still moderately hot 74.1°F (23.4°C), subtly contrasting with August's 79.2°F (26.2°C). September brings Irwin a consistent average low-temperature of 56.1°F (13.4°C).Humidity
The average relative humidity in September in Irwin is 79%.Rainfall
In Irwin, in September, it is raining for 12.5 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, there are 148.3 rainfall days, and 21.57" (548mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Irwin.Daylight
The average length of the day in September in Irwin is 12h and 26min.On the first day of September, sunrise is at 7:02 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:17 pm EDT.
Sunshine
The average sunshine in September in Irwin, Ohio, is 8.1h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the UV index of 4 transforms into the following advice:
Ensure safety - Recommendations to avert sunburn are presented. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Irwin?
What is the average humidity in September in Irwin?
How much does it rain in Irwin in September?
When it does not snow in Irwin?
What is the average length of the day in September in Irwin?
When is the sunrise / sunset in September in Irwin?
How long on average sun shines in September in Irwin?
What is the UV index intensity in September in Irwin?
Average temperature in September
Irwin, OH
- Average high temperature in September: 74.1°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Irwin, OH
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Irwin, OH
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Irwin, OH
- Average humidity in September: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Irwin, OH
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days in September
Irwin, OH
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in September
Irwin, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Irwin, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Irwin, 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 24min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Irwin, OH
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in September
Irwin, 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
Irwin, OH
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Irwin, OH
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (6mi).
The month with the lowest visibility is September (5mi).
Irwin, Ohio, USA
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