September weather forecast
Ironton, OH

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Weather in September

The first month of the autumn, September, is still a warm month in Ironton, Ohio, with an average temperature varying between 79.3°F (26.3°C) and 58.1°F (14.5°C).

Temperature

In Ironton, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's 85.6°F (29.8°C) to a still moderately hot 79.3°F (26.3°C). Ironton witnesses an average low-temperature of 58.1°F (14.5°C) throughout the month of September.

Humidity

The average relative humidity in September is 75%.

Rainfall

In Ironton, in September, during 10.4 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in Ironton, there are 146.5 rainfall days, and 19.65" (499mm) of precipitation is accumulated.

Snowfall

In Ironton, Ohio, snow does not fall in May through September.

Daylight

In Ironton, Ohio, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 7:00 am and sunset at 8:00 pm. On the last day of September, in Ironton, sunrise is at 7:26 am and sunset at 7:14 pm EDT.

Sunshine

In Ironton, Ohio, the average sunshine in September is 8.1h.

UV index

In Ironton, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. 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.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Ironton?

In September, the average high-temperature and low-temperature in Ironton are 79.3°F (26.3°C) and 58.1°F (14.5°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is evaluated at 96.8°F (36°C).

What is the average humidity in September in Ironton?

The average relative humidity in September in Ironton, Ohio, is 75%.

How much does it rain in Ironton in September?

In Ironton, in September, during 10.4 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

When it does not snow in Ironton?

In Ironton, snow does not fall in May through September.

Does it snow in Ironton in September?

In Ironton, Ohio, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in Ironton?

In September, the average day length in Ironton, Ohio, is 12h and 25min.

When is the sunrise / sunset in September in Ironton?

On the first day of September in Ironton, Ohio, sunrise is at 7:00 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 7:14 pm EDT.

How many hours of sunshine does Ironton have in September?

The average sunshine duration in September in Ironton is 8.1h.

How high is the UV index in September in Ironton?

In Ironton, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Ironton, OH

Average temperature in September - Ironton, OH
  • Average high temperature in September: 79.3°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (38.7°F).

  • Average low temperature in September: 58.1°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure in September
Ironton, OH

Average pressure in September - Ironton, OH
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in September
Ironton, OH

Average wind speed in September - Ironton, OH
  • Average wind speed in September: 4.7mph

The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in September
Ironton, OH

Average humidity in September - Ironton, OH
  • Average humidity in September: 75%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is August (74%).

Average rainfall in September
Ironton, OH

Average rainfall in September - Ironton, OH
  • Average rainfall in September: 1.22"

The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is November (1.06").

Average rainfall days in September
Ironton, OH

Average rainfall days in September - Ironton, OH
  • Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is November (8.4 days).

Average snowfall in September
Ironton, OH

Average snowfall in September - Ironton, OH
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.13").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Ironton, OH

Average snowfall days in September - Ironton, OH
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (9.7 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
Ironton, OH

Average daylight in September / Average sunshine in September - Ironton, OH
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in September
Ironton, OH

Average sunshine days in September - Ironton, OH
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is February (11.1 days).

Average UV index in September
Ironton, OH

Average UV index in September - Ironton, OH
  • Average UV index in September: 4

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in September
Ironton, OH

Average cloud cover in September - Ironton, OH
  • Average cloud cover in September: 36

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in September
Ironton, OH

Average visibility in September - Ironton, OH
  • Average visibility in September: 5mi

The months with the highest visibility are April, October and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and December (5mi).

Ironton, Ohio, USA

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