September weather forecast
Millersburg, IA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Millersburg, Iowa, with an average temperature fluctuating between 74.8°F (23.8°C) and 55.6°F (13.1°C).

Temperature

September witnesses a gentle descent in average high-temperature, descending from August's moderately hot 80.6°F (27°C) to a still warm 74.8°F (23.8°C). Throughout September, an average low-temperature of 55.6°F (13.1°C) is expected.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Millersburg, during September, the rain falls for 12.5 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, there are 142 rainfall days, and 29.09" (739mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in September in Millersburg is 12h and 28min.
On the first day of September, sunrise is at 6:35 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:51 pm CDT.

Sunshine

The average sunshine in September is 9.3h.

UV index

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

Millersburg in September has an average high-temperature of 74.8°F (23.8°C) and an average low-temperature of 55.6°F (13.1°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is computed to be 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 77%.

How many days does it rain in September?

In September, in Millersburg, Iowa, the rain falls for 12.5 days. Throughout September, 2.64" (67mm) of precipitation is accumulated.

When it does not snow?

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

Does it snow in September?

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

How many hours of daylight does Millersburg have in September?

In September, the average day length is 12h and 28min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:35 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:51 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.3h.

What is the UV index reading in September?

In Millersburg, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Millersburg, IA

Average temperature in September - Millersburg, IA
  • Average high temperature in September: 74.8°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 (27.1°F).

  • Average low temperature in September: 55.6°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

Average pressure in September
Millersburg, IA

Average pressure in September - Millersburg, IA
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in September
Millersburg, IA

Average wind speed in September - Millersburg, IA
  • Average wind speed in September: 8mph

The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in September
Millersburg, IA

Average humidity in September - Millersburg, IA
  • Average humidity in September: 77%

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

Average rainfall in September
Millersburg, IA

Average rainfall in September - Millersburg, IA
  • Average rainfall in September: 2.64"

The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (1.18").

Average rainfall days in September
Millersburg, IA

Average rainfall days in September - Millersburg, IA
  • Average rainfall days in September: 12.5 days

The months with the highest number of rainy days are May and June (18.5 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in September
Millersburg, IA

Average snowfall in September - Millersburg, IA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Millersburg, IA

Average snowfall days in September - Millersburg, IA
  • 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 June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Millersburg, IA

Average daylight in September / Average sunshine in September - Millersburg, IA
  • 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 12min).

  • Average sunshine in September: 9h and 2min

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

Average sunshine days in September
Millersburg, IA

Average sunshine days in September - Millersburg, IA
  • Average sunshine days in September: 16 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.1 days).

Average UV index in September
Millersburg, IA

Average UV index in September - Millersburg, IA
  • Average UV index in September: 4

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

Average cloud cover in September
Millersburg, IA

Average cloud cover in September - Millersburg, IA
  • Average cloud cover in September: 30

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).

Average visibility in September
Millersburg, IA

Average visibility in September - Millersburg, IA
  • Average visibility in September: 6mi

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

Millersburg, Iowa, USA

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