September weather forecast
Brownsville, KY

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Weather in September

September, the first month of the autumn in Brownsville, is also a moderately hot month, with an average temperature fluctuating between 61°F (16.1°C) and 80.1°F (26.7°C).

Temperature

During the shift to September, Brownsville records a mild decrease in average high-temperature, moving from 85.6°F (29.8°C) in August to a still moderately hot 80.1°F (26.7°C). Brownsville encounters an average low-temperature of 61°F (16.1°C) during September nights.

Humidity

In September, the average relative humidity is 75%.

Rainfall

The month with the least rainfall is September, when the rain falls for 11.5 days and typically collects 1.18" (30mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September in Brownsville is 12h and 25min.
On the first day of September, sunrise is at 6:16 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:29 pm CDT.

Sunshine

In September, the average sunshine in Brownsville is 8.6h.

UV index

In Brownsville, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What is the average September temperature in Brownsville?

In September, in Brownsville, the average high-temperature is 80.1°F (26.7°C), and the average low-temperature is 61°F (16.1°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 96.8°F (36°C).

What is the average humidity in September in Brownsville?

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

What is the driest month in Brownsville?

The month with the least rainfall in Brownsville is September, when the rain falls for 11.5 days and typically collects 1.18" (30mm) of precipitation.

How much does it rain in Brownsville in September?

In Brownsville, during September, the rain falls for 11.5 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow in Brownsville?

May through October are months without snowfall in Brownsville.

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

The average day length in September in Brownsville is 12h and 25min.

What time are sunrise and sunset in September in Brownsville?

On the first day of September in Brownsville, sunrise is at 6:16 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:29 pm CDT.

How long on average sun shines in September in Brownsville?

In September, the average sunshine duration is 8.6h.

What is the UV index reading in September in Brownsville?

The average daily maximum UV index in September in Brownsville, Kentucky, is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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
Brownsville, KY

Average temperature in September - Brownsville, KY
  • Average high temperature in September: 80.1°F

The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (42.1°F).

  • Average low temperature in September: 61°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).

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Average pressure in September
Brownsville, KY

Average pressure in September - Brownsville, KY
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in September
Brownsville, KY

Average wind speed in September - Brownsville, KY
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in September
Brownsville, KY

Average humidity in September - Brownsville, KY
  • Average humidity in September: 75%

The months with the highest relative humidity are February, March, May and December (79%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in September
Brownsville, KY

Average rainfall in September - Brownsville, KY
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is September (1.18").

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Average rainfall days in September
Brownsville, KY

Average rainfall days in September - Brownsville, KY
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is November (7.8 days).

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Average snowfall in September
Brownsville, KY

Average snowfall in September - Brownsville, KY
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Brownsville, KY

Average snowfall days in September - Brownsville, KY
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Brownsville, KY

Average daylight in September / Average sunshine in September - Brownsville, KY
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 8h and 4min

The months with the most sunshine are June and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

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Average sunshine days in September
Brownsville, KY

Average sunshine days in September - Brownsville, KY
  • Average sunshine days in September: 16.1 days

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (10.9 days).

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Average UV index in September
Brownsville, KY

Average UV index in September - Brownsville, KY
  • Average UV index in September: 5

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).

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Average cloud cover in September
Brownsville, KY

Average cloud cover in September - Brownsville, KY
  • Average cloud cover in September: 32

The months with the most cloud cover are January and February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in September
Brownsville, KY

Average visibility in September - Brownsville, KY
  • 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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Brownsville, Kentucky, USA

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