September weather forecast
Primrose, KY

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Weather in September

September, the first month of the autumn in Primrose, is also a moderately hot month, with an average temperature fluctuating between 57.6°F (14.2°C) and 79.3°F (26.3°C).

Temperature

The onset of September entails a subtle temperature shift, as the average high-temperature eases from 85.6°F (29.8°C) in August to a still warm 79.3°F (26.3°C). Primrose undergoes a major shift from daytime highs, averaging a mild 57.6°F (14.2°C) during the night in September.

Humidity

In September, the average relative humidity in Primrose is 76%.

Rainfall

The month with the least rainfall in Primrose is September, when the rain falls for 13.2 days and typically collects 2.05" (52mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Primrose, the average length of the day in September is 12h and 25min.
On the first day of the month, sunrise is at 7:05 am and sunset at 8:03 pm. On the last day of September, in Primrose, Kentucky, sunrise is at 7:29 am and sunset at 7:18 pm EDT.

Sunshine

The average sunshine in September in Primrose is 8.2h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In September, the maximum UV index of 4 transforms into these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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 Primrose in September?

Primrose in September has an average high-temperature of 79.3°F (26.3°C) and an average low-temperature of 57.6°F (14.2°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 96.8°F (36°C).

What is the average humidity in September in Primrose?

In September, the average relative humidity in Primrose is 76%.

What is the driest month in Primrose?

September is the month with the least rainfall in Primrose, Kentucky. Rain falls for 13.2 days and accumulates 2.05" (52mm) of precipitation.

How much does it rain in Primrose in September?

In Primrose, in September, it is raining for 13.2 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow in Primrose?

In Primrose, Kentucky, snow does not fall in May through September.

Does it snow in Primrose in September?

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

How many hours of daylight does Primrose have in September?

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

When is the sunrise / sunset in September in Primrose?

On the first day of September in Primrose, sunrise is at 7:05 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:18 pm EDT.

How many hours of sunshine does Primrose have in September?

In September, the average sunshine duration in Primrose is 8.2h.

What is the UV index reading in September in Primrose?

The average daily maximum UV index in September in Primrose, Kentucky, is 4. A UV Index value of 3 to 5 symbolizes 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
Primrose, KY

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

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in September: 57.6°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in September
Primrose, KY

Average pressure in September - Primrose, KY
  • Average pressure in September: 30.04"Hg

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

Average wind speed in September
Primrose, KY

Average wind speed in September - Primrose, KY
  • Average wind speed in September: 4.7mph

The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

Average humidity in September
Primrose, KY

Average humidity in September - Primrose, KY
  • Average humidity in September: 76%

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are June, August, October and November (75%).

Average rainfall in September
Primrose, KY

Average rainfall in September - Primrose, KY
  • Average rainfall in September: 2.05"

The wettest months (with the highest rainfall) are February and May (3.46").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in September
Primrose, KY

Average rainfall days in September - Primrose, KY
  • Average rainfall days in September: 13.2 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (10.7 days).

Average snowfall in September
Primrose, KY

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

The month with the highest snowfall is February (2.99").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Primrose, KY

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

The month with the highest number of snowfall days is January (9.6 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
Primrose, KY

Average daylight in September / Average sunshine in September - Primrose, 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 36min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in September
Primrose, KY

Average sunshine days in September - Primrose, KY
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is February (10.3 days).

Average UV index in September
Primrose, KY

Average UV index in September - Primrose, KY
  • 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
Primrose, KY

Average cloud cover in September - Primrose, KY
  • Average cloud cover in September: 35

The months with the most cloud cover are January and February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in September
Primrose, KY

Average visibility in September - Primrose, KY
  • Average visibility in September: 5mi

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

Primrose, Kentucky, USA

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