September weather forecast
Lafayette, OH

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Weather in September

The first month of the autumn, September, is still a warm month in Lafayette, Ohio, with an average temperature ranging between min 55.6°F (13.1°C) and max 73.6°F (23.1°C).

Temperature

As August turns into September, the average high-temperatures rest at a still moderately hot 73.6°F (23.1°C), showing a minor variation from the prior month. Lafayette's nights in September cool down to an average low-temperature of 55.6°F (13.1°C).

Humidity

In September, the average relative humidity in Lafayette, Ohio, is 79%.

Rainfall

In Lafayette, in September, during 11.5 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Lafayette, during the entire year, the rain falls for 148.3 days and collects up to 21.3" (541mm) of precipitation.

Snowfall

May through September are months without snowfall in Lafayette.

Daylight

The average length of the day in September is 12h and 27min.
On the first day of September, sunrise is at 7:03 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:19 pm EDT.

Sunshine

In September, the average sunshine in Lafayette is 7.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 4 in September leads to these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What are September temperatures in Lafayette?

The high-temperature during September is 73.6°F (23.1°C) and the low-temperature is 55.6°F (13.1°C). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in July is computed to be 86°F (30°C).

What is the average humidity in September in Lafayette?

In Lafayette, the average relative humidity in September is 79%.

How much does it rain in Lafayette in September?

In Lafayette, Ohio, during September, the rain falls for 11.5 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow in Lafayette?

May through September are months without snowfall in Lafayette, Ohio.

Does it snow in Lafayette in September?

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

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

In September, the average day length in Lafayette, Ohio, is 12h and 27min.

When is the sunrise / sunset in September in Lafayette?

On the first day of September, sunrise is at 7:03 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:19 pm EDT.

How many hours of sunshine does Lafayette have in September?

In September, the average sunshine duration in Lafayette is 7.9h.

What is the UV index intensity in September in Lafayette?

In Lafayette, Ohio, the average daily maximum UV index in September is 4. A UV Index 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Lafayette, OH

Average temperature in September - Lafayette, OH
  • Average high temperature in September: 73.6°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in September: 55.6°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 (19.8°F).

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Average pressure in September
Lafayette, OH

Average pressure in September - Lafayette, OH
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Lafayette, OH

Average wind speed in September - Lafayette, OH
  • Average wind speed in September: 6.7mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in September
Lafayette, OH

Average humidity in September - Lafayette, OH
  • Average humidity in September: 79%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are October and November (75%).

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Average rainfall in September
Lafayette, OH

Average rainfall in September - Lafayette, OH
  • Average rainfall in September: 1.54"

The wettest month (with the highest rainfall) is May (2.72").
The driest months (with the least rainfall) are February and December (1.14").

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Average rainfall days in September
Lafayette, OH

Average rainfall days in September - Lafayette, OH
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (6.6 days).

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Average snowfall in September
Lafayette, OH

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

The month with the highest snowfall is February (2.09").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Lafayette, OH

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

The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Lafayette, OH
  • Average daylight in September: 12h and 3min

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: 7h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in September
Lafayette, OH

Average sunshine days in September - Lafayette, OH
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10 days).

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Average UV index in September
Lafayette, OH

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

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Lafayette, OH

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

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in September
Lafayette, OH

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

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

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Lafayette, Ohio, USA

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