September weather forecast
Napoleon, IN

Weather in September

September, the first month of the autumn in Napoleon, is also a moderately hot month, with an average temperature ranging between min 58.3°F (14.6°C) and max 76.5°F (24.7°C).

Temperature

In Napoleon, Indiana, the average high-temperature in September marginally drops from a warm 82°F (27.8°C) in August to a still moderately hot 76.5°F (24.7°C). The average low-temperature, in Napoleon, is 58.3°F (14.6°C).

Humidity

In September, the average relative humidity is 76%.

Rainfall

September is the month with the least rainfall. Rain falls for 14.2 days and accumulates 2.24" (57mm) of precipitation.

Snowfall

In Napoleon, Indiana, snow does not fall in May through September.

Daylight

In September, the average length of the day in Napoleon is 12h and 26min.
On the first day of the month, sunrise is at 7:09 am and sunset at 8:12 pm. On the last day of September, sunrise is at 7:36 am and sunset at 7:26 pm EDT.

Sunshine

In Napoleon, the average sunshine in September is 8.3h.

UV index

In Napoleon, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
[Resources]

FAQ

What is the temperature in September in Napoleon?

In September, in Napoleon, the average high-temperature is 76.5°F (24.7°C), and the average low-temperature is 58.3°F (14.6°C). in August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 87.8°F (31°C).

What is the average humidity in September in Napoleon?

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

What is the driest month in Napoleon?

The month with the least rainfall in Napoleon is September, when the rain falls for 14.2 days and typically collects 2.24" (57mm) of precipitation.

How much does it rain in Napoleon in September?

In September, in Napoleon, the rain falls for 14.2 days. Throughout September, 2.24" (57mm) of precipitation is accumulated.

When it does not snow in Napoleon?

May through September are months without snowfall in Napoleon, Indiana.

Does it snow in Napoleon in September?

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

How many hours of daylight does Napoleon have in September?

In Napoleon, the average day length in September is 12h and 26min.

What time are sunrise and sunset in September in Napoleon?

In September, on the first day of the month, sunrise is at 7:09 am and sunset at 8:12 pm. On the last day of the month, in Napoleon, Indiana, sunrise is at 7:36 am and sunset at 7:26 pm EDT.

How long on average sun shines in September in Napoleon?

The average sunshine duration in September in Napoleon is 8.3h.

How high is the UV index in September in Napoleon?

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

Average temperature in September - Napoleon, IN
  • Average high temperature in September: 76.5°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (35.2°F).

  • Average low temperature in September: 58.3°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

[Resources]

Average pressure in September
Napoleon, IN

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

The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

[Resources]

Average wind speed in September
Napoleon, IN

Average wind speed in September - Napoleon, IN
  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

[Resources]

Average humidity in September
Napoleon, IN

Average humidity in September - Napoleon, IN
  • Average humidity in September: 76%

The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (74%).

[Resources]

Average rainfall in September
Napoleon, IN

Average rainfall in September - Napoleon, IN
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is April (4.09").
The driest month (with the least rainfall) is September (2.24").

[Resources]

Average rainfall days in September
Napoleon, IN

Average rainfall days in September - Napoleon, IN
  • Average rainfall days in September: 14.2 days

The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is February (8.9 days).

[Resources]

Average snowfall in September
Napoleon, IN

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

The month with the highest snowfall is February (2.83").
The months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in September
Napoleon, IN

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

The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

[Resources]

Average sunshine days in September
Napoleon, IN

Average sunshine days in September - Napoleon, IN
  • Average sunshine days in September: 13.5 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (8.8 days).

[Resources]

Average UV index in September
Napoleon, IN

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

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

[Resources]

Average cloud cover in September
Napoleon, IN

Average cloud cover in September - Napoleon, IN
  • Average cloud cover in September: 33

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).

[Resources]

Average visibility in September
Napoleon, IN

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

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location