September weather forecast
Malvern, IA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Malvern, Iowa, with temperature in the range of an average low of 57.4°F (14.1°C) and an average high of 76.6°F (24.8°C).

Temperature

The arrival of September corresponds with a light shift in temperature, down from a moderately hot 82.4°F (28°C) in August to a still warm 76.6°F (24.8°C). Malvern in September anticipates an average nighttime temperature of 57.4°F (14.1°C).

Humidity

In Malvern, the average relative humidity in September is 73%.

Rainfall

In Malvern, in September, during 12.4 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. In Malvern, during the entire year, the rain falls for 129.5 days and collects up to 27.48" (698mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 27min.
On the first day of the month, sunrise is at 6:49 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:18 am and sunset at 7:05 pm CDT.

Sunshine

In Malvern, the average sunshine in September is 9h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jul 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

September temperatures vary between a high-temperature of 76.6°F (24.8°C) and a low-temperature of 57.4°F (14.1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 89.6°F (32°C).

What is the average humidity in September?

In Malvern, the average relative humidity in September is 73%.

How much does it rain in Malvern in September?

In Malvern, in September, it is raining for 12.4 days, with typically 2.48" (63mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

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

How many hours of daylight does Malvern have in September?

The average day length in September is 12h and 27min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:49 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:05 pm CDT.

How long on average sun shines in September in Malvern?

In Malvern, the average sunshine duration in September is 9h.

What is the UV index intensity in September?

In Malvern, the average daily maximum UV index in September is 5. 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Malvern, IA

Average temperature in September - Malvern, IA
  • Average high temperature in September: 76.6°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in September: 57.4°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in September
Malvern, IA

Average pressure in September - Malvern, IA
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in September
Malvern, IA

Average wind speed in September - Malvern, IA
  • Average wind speed in September: 8.2mph

The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

Average humidity in September
Malvern, IA

Average humidity in September - Malvern, IA
  • Average humidity in September: 73%

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (67%).

Average rainfall in September
Malvern, IA

Average rainfall in September - Malvern, IA
  • Average rainfall in September: 2.48"

The wettest month (with the highest rainfall) is June (4.57").
The driest months (with the least rainfall) are January and February (0.83").

Average rainfall days in September
Malvern, IA

Average rainfall days in September - Malvern, IA
  • Average rainfall days in September: 12.4 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (3.8 days).

Average snowfall in September
Malvern, IA

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

The month with the highest snowfall is February (3.9").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Malvern, IA

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

The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Malvern, 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 18min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in September
Malvern, IA

Average sunshine days in September - Malvern, IA
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is June (10.6 days).

Average UV index in September
Malvern, IA

Average UV index in September - Malvern, IA
  • Average UV index in September: 5

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
Malvern, IA

Average cloud cover in September - Malvern, IA
  • Average cloud cover in September: 28

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in September
Malvern, IA

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

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

Malvern, Iowa, USA

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