September weather forecast
Mahaska, KS

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Weather in September

September, the first month of the autumn in Mahaska, is also a moderately hot month, with an average temperature ranging between min 58.3°F (14.6°C) and max 78.3°F (25.7°C).

Temperature

The beginning of September brings a slight decrease in the average high-temperature, transitioning from 85.5°F (29.7°C) in August to a still moderately hot 78.3°F (25.7°C). Throughout September, the average low-temperature dips to a moderate 58.3°F (14.6°C).

Humidity

In September, the average relative humidity is 69%.

Rainfall

In September, the rain falls for 11.5 days. Throughout September, 1.93" (49mm) of precipitation is accumulated. Throughout the year, there are 114.7 rainfall days, and 19.65" (499mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Mahaska, the average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:57 am and sunset at 8:00 pm. On the last day of September, in Mahaska, sunrise is at 7:25 am and sunset at 7:12 pm CDT.

Sunshine

In September, the average sunshine in Mahaska is 8.8h.

UV index

In September, the average daily maximum UV index in Mahaska is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 5 in September transforms into this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Mahaska?

The average high-temperature, in September, in Mahaska, is 78.3°F (25.7°C), while the average low-temperature is 58.3°F (14.6°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is computed to be 95°F (35°C).

What is the average humidity in September?

In September, the average relative humidity is 69%.

How many days does it rain in September?

In Mahaska, in September, it is raining for 11.5 days, with typically 1.93" (49mm) of accumulated precipitation.

When it does not snow?

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

Does it snow in September?

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

What is the average length of the day in September?

The average day length in September is 12h and 26min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:57 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:12 pm CDT.

How many hours of sunshine does Mahaska have in September?

The average sunshine duration in September is 8.8h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from 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
Mahaska, KS

Average temperature in September - Mahaska, KS
  • Average high temperature in September: 78.3°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in September: 58.3°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in September
Mahaska, KS

Average pressure in September - Mahaska, KS
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in September
Mahaska, KS

Average wind speed in September - Mahaska, KS
  • Average wind speed in September: 9.3mph

The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).

Average humidity in September
Mahaska, KS

Average humidity in September - Mahaska, KS
  • Average humidity in September: 69%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is October (63%).

Average rainfall in September
Mahaska, KS

Average rainfall in September - Mahaska, KS
  • Average rainfall in September: 1.93"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (0.51").

Average rainfall days in September
Mahaska, KS

Average rainfall days in September - Mahaska, KS
  • Average rainfall days in September: 11.5 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is February (3.2 days).

Average snowfall in September
Mahaska, KS

Average snowfall in September - Mahaska, KS
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.93").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Mahaska, KS

Average snowfall days in September - Mahaska, KS
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Mahaska, KS

Average daylight in September / Average sunshine in September - Mahaska, KS
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).

Average sunshine days in September
Mahaska, KS

Average sunshine days in September - Mahaska, KS
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is May (12.8 days).

Average UV index in September
Mahaska, KS

Average UV index in September - Mahaska, KS
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Mahaska, KS

Average cloud cover in September - Mahaska, KS
  • Average cloud cover in September: 27

The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 24).

Average visibility in September
Mahaska, KS

Average visibility in September - Mahaska, KS
  • 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).

Mahaska, Kansas, USA

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