September weather forecast
Prospect, KY

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Weather in September

September, the first month of the autumn in Prospect, is still a warm month, with an average temperature varying between 59.9°F (15.5°C) and 79.3°F (26.3°C).

Temperature

The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's 85.6°F (29.8°C) to a still moderately hot 79.3°F (26.3°C). Throughout September, an average nighttime temperature of 59.9°F (15.5°C) is experienced.

Humidity

In Prospect, the average relative humidity in September is 74%.

Rainfall

The month with the least rainfall is September, when the rain falls for 13.6 days and typically collects 1.85" (47mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in September is 12h and 25min.
On the first day of September in Prospect, sunrise is at 7:12 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:26 pm EDT.

Sunshine

The average sunshine in September is 8.4h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in September interprets into the following advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Prospect in September?

In Prospect, in September, the average high-temperature is 79.3°F (26.3°C), and the average low-temperature is 59.9°F (15.5°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 95°F (35°C).

What is the average humidity in September in Prospect?

In September, the average relative humidity is 74%.

What is the driest month in Prospect?

The month with the least rainfall is September, when the rain falls for 13.6 days and typically collects 1.85" (47mm) of precipitation.

How much does it rain in Prospect in September?

In Prospect, during September, the rain falls for 13.6 days and regularly aggregates up to 1.85" (47mm) of precipitation.

When it does not snow in Prospect?

In Prospect, Kentucky, snow does not fall in May through October.

How many hours of daylight does Prospect have in September?

The average day length in September in Prospect, Kentucky, is 12h and 25min.

When is the sunrise / sunset in September in Prospect?

In September, on the first day of the month, sunrise is at 7:12 am and sunset at 8:11 pm. On the last day of the month, in Prospect, sunrise is at 7:37 am and sunset at 7:26 pm EDT.

How long on average sun shines in September in Prospect?

In Prospect, Kentucky, the average sunshine duration in September is 8.4h.

What is the UV index reading in September in Prospect?

In Prospect, Kentucky, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Prospect, KY

Average temperature in September - Prospect, KY
  • Average high temperature in September: 79.3°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).

Average pressure in September
Prospect, KY

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Prospect, KY

Average wind speed in September - Prospect, KY
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is January (8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September
Prospect, KY

Average humidity in September - Prospect, KY
  • Average humidity in September: 74%

The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is August (73%).

Average rainfall in September
Prospect, KY

Average rainfall in September - Prospect, KY
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is April (3.98").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in September
Prospect, KY

Average rainfall days in September - Prospect, KY
  • Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (10.6 days).

Average snowfall in September
Prospect, KY

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

The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Prospect, KY

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

The month with the highest number of snowfall days is January (8.3 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
Prospect, KY

Average daylight in September / Average sunshine in September - Prospect, KY
  • 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 2min

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 18min).

Average sunshine days in September
Prospect, KY

Average sunshine days in September - Prospect, KY
  • Average sunshine days in September: 14.6 days

The month with the most sunshine days is October (17.9 days).
The month with the least sunshine days is May (10.2 days).

Average UV index in September
Prospect, KY

Average UV index in September - Prospect, 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, November and December (UV index 2).

Average cloud cover in September
Prospect, KY

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

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in September
Prospect, KY

Average visibility in September - Prospect, KY
  • Average visibility in September: 6mi

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

Prospect, Kentucky, USA

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