September weather forecast
Sleeth, IN

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Weather in September

The first month of the autumn, September, is still a warm month in Sleeth, Indiana, with an average temperature varying between 56.8°F (13.8°C) and 75°F (23.9°C).

Temperature

Sleeth starts September with an average high-temperature of a still moderately hot 75°F (23.9°C), hinting at a minimal fluctuation from August. Sleeth in September experiences a low-temperature average of 56.8°F (13.8°C).

Humidity

In September, the average relative humidity in Sleeth is 78%.

Rainfall

In Sleeth, during September, the rain falls for 11.9 days and regularly aggregates up to 1.26" (32mm) of precipitation. Throughout the year, in Sleeth, there are 143.1 rainfall days, and 20.91" (531mm) of precipitation is accumulated.

Snowfall

In Sleeth, snow does not fall in May through September.

Daylight

The average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 7:14 am and sunset at 8:18 pm. On the last day of September, sunrise is at 7:43 am and sunset at 7:30 pm EDT.

Sunshine

In September, the average sunshine is 8.2h.

UV index

In Sleeth, Indiana, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk 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:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

What is the average September temperature?

An average high-temperature, in September, in Sleeth, is 75°F (23.9°C) and the average low-temperature is 56.8°F (13.8°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in July is calculated to be 87.8°F (31°C).

What is the average humidity in September?

The average relative humidity in September is 78%.

How much does it rain in September?

In Sleeth, during September, the rain falls for 11.9 days and regularly aggregates up to 1.26" (32mm) of precipitation.

When it does not snow?

May through September are months without snowfall.

Does it snow in September?

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

How many hours of daylight does Sleeth have in September?

The average day length in September is 12h and 27min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 7:14 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 7:30 pm EDT.

How many hours of sunshine does Sleeth have in September?

In September, the average sunshine duration is 8.2h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Sleeth, IN

Average temperature in September - Sleeth, IN
  • Average high temperature in September: 75°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in September: 56.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

Average pressure in September
Sleeth, IN

Average pressure in September - Sleeth, IN
  • Average pressure in September: 30.03"Hg

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

Average wind speed in September
Sleeth, IN

Average wind speed in September - Sleeth, IN
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

Average humidity in September
Sleeth, IN

Average humidity in September - Sleeth, IN
  • Average humidity in September: 78%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in September
Sleeth, IN

Average rainfall in September - Sleeth, IN
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is December (1.18").

Average rainfall days in September
Sleeth, IN

Average rainfall days in September - Sleeth, IN
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (6 days).

Average snowfall in September
Sleeth, IN

Average snowfall in September - Sleeth, IN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.44").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Sleeth, IN

Average snowfall days in September - Sleeth, IN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Sleeth, IN

Average daylight in September / Average sunshine in September - Sleeth, IN
  • Average daylight in September: 12h and 2min

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: 8h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in September
Sleeth, IN

Average sunshine days in September - Sleeth, IN
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in September
Sleeth, IN

Average UV index in September - Sleeth, IN
  • Average UV index in September: 4

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

Average cloud cover in September
Sleeth, IN

Average cloud cover in September - Sleeth, IN
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are June and August (Cloud cover 33).

Average visibility in September
Sleeth, IN

Average visibility in September - Sleeth, IN
  • Average visibility in September: 6mi

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

Sleeth, Indiana, USA

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