September weather forecast
Arispe, IA

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Weather in September

September, the first month of the autumn in Arispe, is still a warm month, with an average temperature fluctuating between 56.1°F (13.4°C) and 75°F (23.9°C).

Temperature

September signals a slight drop in average high-temperature, sliding from August's warm 81°F (27.2°C) to a still moderately hot 75°F (23.9°C). September in Arispe witnesses an average low-temperature hovering around a moderate 56.1°F (13.4°C).

Humidity

In September, the average relative humidity in Arispe is 77%.

Rainfall

In Arispe, during September, the rain falls for 11.6 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Arispe, during the entire year, the rain falls for 127.7 days and collects up to 23.39" (594mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Arispe, the average length of the day in September is 12h and 27min.
On the first day of September in Arispe, Iowa, sunrise is at 6:44 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:59 pm CDT.

Sunshine

In Arispe, the average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index in Arispe, Iowa, is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Arispe in September?

In Arispe, in September, the average high-temperature is 75°F (23.9°C), and the average low-temperature is 56.1°F (13.4°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is appraised at 86°F (30°C).

What is the average humidity in September in Arispe?

In September, the average relative humidity is 77%.

How much does it rain in Arispe in September?

In Arispe, Iowa, during September, the rain falls for 11.6 days and regularly aggregates up to 2.2" (56mm) of precipitation.

When it does not snow in Arispe?

June through September are months without snowfall in Arispe.

Does it snow in Arispe in September?

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

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

In Arispe, Iowa, the average day length in September is 12h and 27min.

When are sunrise and sunset in September in Arispe?

In September, on the first day of the month, sunrise is at 6:44 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:59 pm CDT.

How long on average sun shines in September in Arispe?

The average sunshine duration in September in Arispe is 9.2h.

What is the UV index intensity in September in Arispe?

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Arispe, IA

Average temperature in September - Arispe, IA
  • Average high temperature in September: 75°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in September: 56.1°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).

Average pressure in September
Arispe, IA

Average pressure in September - Arispe, IA
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Arispe, IA

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

The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in September
Arispe, IA

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

The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
Arispe, IA

Average rainfall in September - Arispe, IA
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is June (4.17").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in September
Arispe, IA

Average rainfall days in September - Arispe, IA
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (3.7 days).

Average snowfall in September
Arispe, IA

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

The month with the highest snowfall is January (3.15").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Arispe, IA

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

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Arispe, 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 1min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in September
Arispe, IA

Average sunshine days in September - Arispe, IA
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (10.7 days).

Average UV index in September
Arispe, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in September
Arispe, IA

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

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and September (Cloud cover 30).

Average visibility in September
Arispe, IA

Average visibility in September - Arispe, IA
  • 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).

Arispe, Iowa, USA

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