September weather forecast
Ossian, IN

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Weather in September

September, the first month of the autumn in Ossian, is still a warm month, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 73.8°F (23.2°C).

Temperature

With September's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 79.3°F (26.3°C) in August to a still warm 73.8°F (23.2°C). Ossian, in September, witnesses an average low-temperature of 55.8°F (13.2°C).

Humidity

In September, the average relative humidity in Ossian is 79%.

Rainfall

In Ossian, Indiana, in September, during 14.1 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, in Ossian, there are 161.7 rainfall days, and 28.39" (721mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Ossian.

Daylight

In Ossian, the average length of the day in September is 12h and 27min.
On the first day of September, sunrise is at 7:08 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:23 pm EDT.

Sunshine

In September, the average sunshine is 8.1h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 4 in September translates into this advice:
Act with care - The need to guard against sun damage is communicated. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Ossian in September?

During September, Ossian experiences an average high-temperature of 73.8°F (23.2°C) and a low-temperature of 55.8°F (13.2°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in July is estimated at 87.8°F (31°C).

What is the average humidity in September in Ossian?

In September, the average relative humidity in Ossian is 79%.

How much does it rain in Ossian in September?

In Ossian, during September, the rain falls for 14.1 days and regularly aggregates up to 1.81" (46mm) of precipitation.

When it does not snow in Ossian?

In Ossian, snow does not fall in June through September.

Does it snow in Ossian in September?

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

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

In September, the average day length in Ossian is 12h and 27min.

When is the sunrise / sunset in September in Ossian?

On the first day of September in Ossian, sunrise is at 7:08 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 7:23 pm EDT.

How many hours of sunshine does Ossian have in September?

In Ossian, the average sunshine duration in September is 8.1h.

How high is the UV index in September in Ossian?

In Ossian, Indiana, the average daily maximum UV index in September is 4. A UV Index 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
Ossian, IN

Average temperature in September - Ossian, IN
  • Average high temperature in September: 73.8°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in September: 55.8°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in September
Ossian, IN

Average pressure in September - Ossian, IN
  • Average pressure in September: 30.04"Hg

The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Ossian, IN

Average wind speed in September - Ossian, IN
  • Average wind speed in September: 6.9mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in September
Ossian, IN

Average humidity in September - Ossian, IN
  • Average humidity in September: 79%

The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September
Ossian, IN

Average rainfall in September - Ossian, IN
  • Average rainfall in September: 1.81"

The wettest months (with the highest rainfall) are April and May (3.35").
The driest month (with the least rainfall) is February (1.69").

Average rainfall days in September
Ossian, IN

Average rainfall days in September - Ossian, IN
  • Average rainfall days in September: 14.1 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (7 days).

Average snowfall in September
Ossian, IN

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

The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Ossian, IN

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

The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Ossian, IN
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 8h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in September
Ossian, IN

Average sunshine days in September - Ossian, IN
  • Average sunshine days in September: 14 days

The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is May (10.2 days).

Average UV index in September
Ossian, IN

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

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

Average cloud cover in September
Ossian, IN

Average cloud cover in September - Ossian, IN
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in September
Ossian, IN

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

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

Ossian, Indiana, USA

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