September weather forecast
Oskaloosa, KS

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Oskaloosa, Kansas, with an average temperature ranging between min 59.4°F (15.2°C) and max 78.6°F (25.9°C).

Temperature

September brings a slight decrease in temperature, down from 85.5°F (29.7°C) in August to a still warm 78.6°F (25.9°C). Throughout September, an average nighttime temperature of 59.4°F (15.2°C) is experienced.

Humidity

The average relative humidity in September is 75%.

Rainfall

In September, the rain falls for 12.4 days. Throughout September, 2.32" (59mm) of precipitation is accumulated. Throughout the year, there are 131.2 rainfall days, and 25.47" (647mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Oskaloosa, Kansas.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of September, sunrise is at 6:50 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:04 pm CDT.

Sunshine

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

UV index

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 5 during September leads to these instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

In September, the average high-temperature and low-temperature are 78.6°F (25.9°C) and 59.4°F (15.2°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 95°F (35°C).

What is the average humidity in September in Oskaloosa?

In Oskaloosa, the average relative humidity in September is 75%.

How much does it rain in September?

In Oskaloosa, in September, during 12.4 rainfall days, 2.32" (59mm) of precipitation is typically accumulated.

When it does not snow?

In Oskaloosa, Kansas, snow does not fall in May through September.

Does it snow in September?

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

How many hours of daylight does Oskaloosa have in September?

In Oskaloosa, the average day length in September is 12h and 26min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:50 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 7:04 pm CDT.

How many hours of sunshine does Oskaloosa have in September?

In Oskaloosa, the average sunshine duration in September is 9.2h.

What is the UV index intensity in September in Oskaloosa?

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Oskaloosa, KS

Average temperature in September - Oskaloosa, KS
  • Average high temperature in September: 78.6°F

The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.6°F).

  • Average low temperature in September: 59.4°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in September
Oskaloosa, KS

Average pressure in September - Oskaloosa, KS
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Oskaloosa, KS

Average wind speed in September - Oskaloosa, KS
  • Average wind speed in September: 7.5mph

The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in September
Oskaloosa, KS

Average humidity in September - Oskaloosa, KS
  • Average humidity in September: 75%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are October and November (69%).

Average rainfall in September
Oskaloosa, KS

Average rainfall in September - Oskaloosa, KS
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is January (0.91").

Average rainfall days in September
Oskaloosa, KS

Average rainfall days in September - Oskaloosa, KS
  • Average rainfall days in September: 12.4 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in September
Oskaloosa, KS

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

The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Oskaloosa, KS

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

The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).

Average sunshine days in September
Oskaloosa, KS

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

The month with the most sunshine days is December (22.5 days).
The month with the least sunshine days is May (12.5 days).

Average UV index in September
Oskaloosa, KS

Average UV index in September - Oskaloosa, 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
Oskaloosa, KS

Average cloud cover in September - Oskaloosa, KS
  • Average cloud cover in September: 28

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in September
Oskaloosa, KS

Average visibility in September - Oskaloosa, 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).

Oskaloosa, Kansas, USA

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