September weather forecast
Robison-Whitaker Acres, IA

Share

Weather in September

The first month of the autumn, September, is still a warm month in Robison-Whitaker Acres, Iowa, with an average temperature ranging between min 55.6°F (13.1°C) and max 74.7°F (23.7°C).

Temperature

During September, Robison-Whitaker Acres observes a subtle ascent to a still warm 74.7°F (23.7°C) from August's 79.7°F (26.5°C) in the average high-temperature. September in Robison-Whitaker Acres, Iowa, witnesses an average low-temperature hovering around a refreshing 55.6°F (13.1°C).

Humidity

The average relative humidity in September in Robison-Whitaker Acres, Iowa, is 76%.

Rainfall

In Robison-Whitaker Acres, in September, during 10.6 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In Robison-Whitaker Acres, during the entire year, the rain falls for 128.1 days and collects up to 26.61" (676mm) of precipitation.

Snowfall

June through September are months without snowfall in Robison-Whitaker Acres.

Daylight

In September, the average length of the day is 12h and 28min.
On the first day of September, sunrise is at 6:40 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:56 pm CDT.

Sunshine

In Robison-Whitaker Acres, the average sunshine in September is 9.2h.

UV index

In Robison-Whitaker Acres, Iowa, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the maximum UV index of 4 translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
[Resources]

Frequently asked questions

What are September temperatures in Robison-Whitaker Acres?

The average high-temperature, in September, in Robison-Whitaker Acres, is 74.7°F (23.7°C), while the average low-temperature is 55.6°F (13.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in July is estimated at 87.8°F (31°C).

What is the average humidity in September in Robison-Whitaker Acres?

The average relative humidity in September in Robison-Whitaker Acres, Iowa, is 76%.

How much does it rain in Robison-Whitaker Acres in September?

In September, in Robison-Whitaker Acres, Iowa, the rain falls for 10.6 days. Throughout September, 2.91" (74mm) of precipitation is accumulated.

When it does not snow in Robison-Whitaker Acres?

June through September are months without snowfall in Robison-Whitaker Acres, Iowa.

Does it snow in Robison-Whitaker Acres in September?

In Robison-Whitaker Acres, Iowa, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Robison-Whitaker Acres have in September?

In Robison-Whitaker Acres, Iowa, the average day length in September is 12h and 28min.

When is the sunrise / sunset in September in Robison-Whitaker Acres?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 7:46 pm. On the last day of the month, in Robison-Whitaker Acres, sunrise is at 7:10 am and sunset at 6:56 pm CDT.

How long on average sun shines in September in Robison-Whitaker Acres?

The average sunshine duration in September is 9.2h.

What is the UV index intensity in September in Robison-Whitaker Acres?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents 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
Robison-Whitaker Acres, IA

Average temperature in September - Robison-Whitaker Acres, IA
  • Average high temperature in September: 74.7°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 (26.2°F).

  • Average low temperature in September: 55.6°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

[Resources]

Average pressure in September
Robison-Whitaker Acres, IA

Average pressure in September - Robison-Whitaker Acres, IA
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

[Resources]

Average wind speed in September
Robison-Whitaker Acres, IA

Average wind speed in September - Robison-Whitaker Acres, IA
  • Average wind speed in September: 8.3mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

[Resources]

Average humidity in September
Robison-Whitaker Acres, IA

Average humidity in September - Robison-Whitaker Acres, IA
  • Average humidity in September: 76%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (70%).

[Resources]

Average rainfall in September
Robison-Whitaker Acres, IA

Average rainfall in September - Robison-Whitaker Acres, IA
  • Average rainfall in September: 2.91"

The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is January (0.91").

[Resources]

Average rainfall days in September
Robison-Whitaker Acres, IA

Average rainfall days in September - Robison-Whitaker Acres, IA
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (3.8 days).

[Resources]

Average snowfall in September
Robison-Whitaker Acres, IA

Average snowfall in September - Robison-Whitaker Acres, IA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.94").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in September
Robison-Whitaker Acres, IA

Average snowfall days in September - Robison-Whitaker Acres, IA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Robison-Whitaker Acres, IA

Average daylight in September / Average sunshine in September - Robison-Whitaker Acres, IA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

[Resources]

Average sunshine days in September
Robison-Whitaker Acres, IA

Average sunshine days in September - Robison-Whitaker Acres, IA
  • Average sunshine days in September: 17.4 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (10.6 days).

[Resources]

Average UV index in September
Robison-Whitaker Acres, IA

Average UV index in September - Robison-Whitaker Acres, 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, February, October, November and December (UV index 2).

[Resources]

Average cloud cover in September
Robison-Whitaker Acres, IA

Average cloud cover in September - Robison-Whitaker Acres, IA
  • Average cloud cover in September: 31

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 31).

[Resources]

Average visibility in September
Robison-Whitaker Acres, IA

Average visibility in September - Robison-Whitaker Acres, IA
  • Average visibility in September: 6mi

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

[Resources]

Robison-Whitaker Acres, Iowa, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location