September weather forecast
Muscatine, IA

Weather in September

The first month of the autumn, September, is still a warm month in Muscatine, Iowa, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 75.4°F (24.1°C).

Temperature

In Muscatine, the average high-temperature in September marginally drops from 81.1°F (27.3°C) in August to a still warm 75.4°F (24.1°C). The average low-temperature, in Muscatine, is 56.3°F (13.5°C).

Humidity

The average relative humidity in September is 76%.

Rainfall

In Muscatine, during September, the rain falls for 12.3 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 153.8 rainfall days, and 31.69" (805mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in September in Muscatine is 12h and 28min.
On the first day of the month, sunrise is at 6:30 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:48 pm CDT.

Sunshine

In Muscatine, the average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September in Muscatine is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation 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 solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Muscatine?

The average high-temperature, in September, in Muscatine, Iowa, is 75.4°F (24.1°C), while the average low-temperature is 56.3°F (13.5°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in August is computed to be 86°F (30°C).

What is the average humidity in September in Muscatine?

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

How many days does it rain in September in Muscatine?

In Muscatine, Iowa, during September, the rain falls for 12.3 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow in Muscatine?

May through September are months without snowfall.

Does it snow in Muscatine in September?

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

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

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

When are sunrise and sunset in September in Muscatine?

In September, on the first day of the month, sunrise is at 6:30 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:48 pm CDT.

How long on average sun shines in September in Muscatine?

In Muscatine, the average sunshine duration in September is 9.4h.

What is the UV index intensity in September in Muscatine?

In Muscatine, Iowa, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Muscatine, IA

Average temperature in September - Muscatine, IA
  • Average high temperature in September: 75.4°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.4°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).

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Average pressure in September
Muscatine, IA

Average pressure in September - Muscatine, 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 (29.9"Hg).

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Average wind speed in September
Muscatine, IA

Average wind speed in September - Muscatine, IA
  • Average wind speed in September: 7.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in September
Muscatine, IA

Average humidity in September - Muscatine, IA
  • Average humidity in September: 76%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in September
Muscatine, IA

Average rainfall in September - Muscatine, IA
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is May (5").
The driest months (with the least rainfall) are February and December (1.46").

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Average rainfall days in September
Muscatine, IA

Average rainfall days in September - Muscatine, IA
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is May (19.7 days).
The months with the least rainy days are January and February (6.3 days).

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Average snowfall in September
Muscatine, IA

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

The month with the highest snowfall is January (4.92").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
Muscatine, IA

Average snowfall days in September - Muscatine, IA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Muscatine, IA
  • Average daylight in September: 12h and 28min

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 14min).

  • Average sunshine in September: 9h and 24min

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 12min).

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Average sunshine days in September
Muscatine, IA

Average sunshine days in September - Muscatine, IA
  • Average sunshine days in September: 15.6 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (8.3 days).

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Average UV index in September
Muscatine, IA

Average UV index in September - Muscatine, IA
  • 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 and December (UV index 1).

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Average cloud cover in September
Muscatine, IA

Average cloud cover in September - Muscatine, IA
  • Average cloud cover in September: 29

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).

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Average visibility in September
Muscatine, IA

Average visibility in September - Muscatine, 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).

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