September weather forecast
Fairfield, OH

Weather in September

September, the first month of the autumn in Fairfield, is also a moderately hot month, with an average temperature varying between 58.1°F (14.5°C) and 77°F (25°C).

Temperature

In September, the average high-temperature marginally drops from a moderately hot 82.6°F (28.1°C) in August to a still warm 77°F (25°C). In Fairfield, in September, the average low-temperature is 58.1°F (14.5°C).

Humidity

In Fairfield, the average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall in Fairfield. Rain falls for 11.2 days and accumulates 1.42" (36mm) of precipitation.

Snowfall

May through October are months without snowfall in Fairfield.

Daylight

In Fairfield, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 7:06 am and sunset at 8:09 pm. On the last day of September, in Fairfield, sunrise is at 7:33 am and sunset at 7:22 pm EDT.

Sunshine

In September, the average sunshine in Fairfield is 8.3h.

UV index

In Fairfield, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Fairfield?

The average high-temperature, in September, is 77°F (25°C), while the average low-temperature is 58.1°F (14.5°C). in August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 89.6°F (32°C).

What is the average humidity in September in Fairfield?

In Fairfield, Ohio, the average relative humidity in September is 75%.

What is the driest month in Fairfield?

September is the month with the least rainfall. Rain falls for 11.2 days and accumulates 1.42" (36mm) of precipitation.

How many days does it rain in September in Fairfield?

In September, in Fairfield, Ohio, the rain falls for 11.2 days. Throughout September, 1.42" (36mm) of precipitation is accumulated.

When it does not snow in Fairfield?

In Fairfield, snow does not fall in May through October.

How many hours of daylight does Fairfield have in September?

In September, the average day length is 12h and 26min.

What time are sunrise and sunset in September in Fairfield?

In September, on the first day of the month, sunrise is at 7:06 am and sunset at 8:09 pm. On the last day of the month, in Fairfield, Ohio, sunrise is at 7:33 am and sunset at 7:22 pm EDT.

How long on average sun shines in September in Fairfield?

In September, the average sunshine duration in Fairfield, Ohio, is 8.3h.

What is the UV index reading in September in Fairfield?

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

Average temperature in September
Fairfield, OH

Average temperature in September - Fairfield, OH
  • Average high temperature in September: 77°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in September: 58.1°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure in September
Fairfield, OH

Average pressure in September - Fairfield, OH
  • Average pressure in September: 30.03"Hg

The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Fairfield, OH

Average wind speed in September - Fairfield, OH
  • Average wind speed in September: 5.9mph

The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in September
Fairfield, OH

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

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

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Average rainfall in September
Fairfield, OH

Average rainfall in September - Fairfield, 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 September (1.42").

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Average rainfall days in September
Fairfield, OH

Average rainfall days in September - Fairfield, OH
  • Average rainfall days in September: 11.2 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in September
Fairfield, OH

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

The months with the highest snowfall are February and March (1.81").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Fairfield, OH

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

The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Fairfield, OH

Average daylight in September / Average sunshine in September - Fairfield, OH
  • Average daylight in September: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 27min).

  • Average sunshine in September: 8h and 18min

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in September
Fairfield, OH

Average sunshine days in September - Fairfield, OH
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in September
Fairfield, OH

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

The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Fairfield, OH

Average cloud cover in September - Fairfield, OH
  • Average cloud cover in September: 32

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in September
Fairfield, OH

Average visibility in September - Fairfield, OH
  • Average visibility in September: 6mi

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

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