September weather forecast
Spring Grove, IN

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Weather in September

September, the first month of the autumn in Spring Grove, is also a moderately hot month, with an average temperature fluctuating between 56.7°F (13.7°C) and 74.7°F (23.7°C).

Temperature

With the onset of September, the average high-temperature registers at a still warm 74.7°F (23.7°C), subtly different from August's 79.3°F (26.3°C). September's nights observe an average temperature of 56.7°F (13.7°C).

Humidity

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

Rainfall

In Spring Grove, in September, it is raining for 13.3 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 154.1 rainfall days, and 23.74" (603mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of September, sunrise is at 7:08 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:23 pm EDT.

Sunshine

The average sunshine in September is 8.1h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The average daily UV index of 4 in September transforms into the following instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Experience reduced UV exposure by about half when donning a wide-brim hat.

Frequently asked questions

What is the usual temperature for Spring Grove in September?

The average high-temperature and low-temperature during September are 74.7°F (23.7°C) and 56.7°F (13.7°C) respectively. In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the average humidity in September?

The average relative humidity in September is 78%.

How many days does it rain in September?

In Spring Grove, during September, the rain falls for 13.3 days and regularly aggregates up to 1.57" (40mm) of precipitation.

When it does not snow in Spring Grove?

In Spring Grove, snow does not fall in May through September.

Does it snow in September?

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

How many hours of daylight does Spring Grove have in September?

The average day length in September is 12h and 26min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:08 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:23 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September in Spring Grove is 8.1h.

How high is the UV index in September in Spring Grove?

In Spring Grove, the average daily maximum UV index in September is 4. A UV Index reading 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
Spring Grove, IN

Average temperature in September - Spring Grove, IN
  • Average high temperature in September: 74.7°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in September: 56.7°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (20.8°F).

Average pressure in September
Spring Grove, IN

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

The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Spring Grove, IN

Average wind speed in September - Spring Grove, IN
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

Average humidity in September
Spring Grove, IN

Average humidity in September - Spring Grove, IN
  • Average humidity in September: 78%

The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is October (75%).

Average rainfall in September
Spring Grove, IN

Average rainfall in September - Spring Grove, IN
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is November (1.5").

Average rainfall days in September
Spring Grove, IN

Average rainfall days in September - Spring Grove, IN
  • Average rainfall days in September: 13.3 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (7.4 days).

Average snowfall in September
Spring Grove, IN

Average snowfall in September - Spring Grove, IN
  • Average snowfall in September: 0"

The month with the highest snowfall is December (2.28").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Spring Grove, IN

Average snowfall days in September - Spring Grove, IN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (9.2 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
Spring Grove, IN

Average daylight in September / Average sunshine in September - Spring Grove, 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 24min).

  • Average sunshine in September: 8h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in September
Spring Grove, IN

Average sunshine days in September - Spring Grove, IN
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (9.8 days).

Average UV index in September
Spring Grove, IN

Average UV index in September - Spring Grove, IN
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).

Average cloud cover in September
Spring Grove, IN

Average cloud cover in September - Spring Grove, IN
  • Average cloud cover in September: 35

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
Spring Grove, IN

Average visibility in September - Spring Grove, IN
  • Average visibility in September: 6mi

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

Spring Grove, Indiana, USA

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