September weather forecast and climate
Vermillion, KS

The first month of the autumn, September, is also a moderately hot month in Vermillion, Kansas, with average temperature fluctuating between 58.3°F (14.6°C) and 78.4°F (25.8°C).

Temperature

In Vermillion, the average high-temperature marginally drops, from a moderately hot 84.7°F (29.3°C) in August, to a still warm 78.4°F (25.8°C). In Vermillion, the average low-temperature is 58.3°F (14.6°C).

Humidity

In Vermillion, the average relative humidity is 72%.

Rainfall

In Vermillion, it is raining for 11.4 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, in Vermillion, there are 113.5 rainfall days, and 19.65" (499mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day is 12.4h.

Sunshine

In Vermillion, Kansas, the average sunshine is 9.1h.

UV index

In September, the average daily maximum UV index in Vermillion is 5. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Vermillion?

The average high-temperature, in September, is 78.4°F (25.8°C), while the average low-temperature is 58.3°F (14.6°C).

What is the average humidity in September in Vermillion?

The average relative humidity in September in Vermillion, Kansas, is 72%.

How many days does it rain in September in Vermillion?

In Vermillion, during September, the rain falls for 11.4 days and regularly aggregates up to 1.5" (38mm) of precipitation.

Does it snow in Vermillion in September?

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

When it does not snow in Vermillion?

May through September are months without snowfall in Vermillion.

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

In September, the average length of the day in Vermillion, Kansas, is 12.4h.

How long on average sun shines in September in Vermillion?

In September, the average sunshine in Vermillion, Kansas, is 9.1h.

What is the UV index intensity in September in Vermillion?

The average daily maximum UV index in September in Vermillion, Kansas, is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV rays.
Average temperature in September - Vermillion, KS
  • Average high temperature in September: 78.4°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (34.9°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 - Vermillion, KS
  • Average pressure in September: 29.99"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.86").

Average wind speed in September - Vermillion, KS
  • Average wind speed in September: 8.5mph

The windiest month (with the highest average wind speed) is March (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).

Average humidity in September - Vermillion, KS
  • Average humidity in September: 72%

The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is October (66%).

Average rainfall in September - Vermillion, KS
  • Average rainfall in September: 1.5"

The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is February (0.51").

Average rainfall days in September - Vermillion, KS
  • Average rainfall days in September: 11.4 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is February (3.8 days).

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

The month with the highest snowfall is January (1.61").
Months with the least snowfall are May, June, July, August and September (0").

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

Months with the highest number of snowfall days are January and February (5.2 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Vermillion, KS
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 9.1h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 5.2h).

Average sunshine days in September - Vermillion, KS
  • Average sunshine days in September: 17 days

The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is May (13.3 days).

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

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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

The month with the most cloud cover is March (Cloud cover 44).
Months with the least cloud cover are June and July (Cloud cover 26).

Average visibility in September - Vermillion, KS
  • Average visibility in September: 6mi

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