September weather forecast and climate
Sterling, KS

September, the first month of the autumn, in Sterling, is also a moderately hot month, with average temperature fluctuating between 62.1°F (16.7°C) and 81.5°F (27.5°C).

Temperature

In September, the average high-temperature marginally drops, from a tropical 89.6°F (32°C) in August, to a warm 81.5°F (27.5°C). In September, in Sterling, Kansas, the average low-temperature is 62.1°F (16.7°C).

Heat index

In September, the average heat index is estimated at 84.4°F (29.1°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'apparent temperature', or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like metabolic differences, differences in body mass, height, and shape, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in Sterling is 64%.

Rainfall

In Sterling, it is raining for 11.6 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, there are 112.9 rainfall days, and 21.06" (535mm) 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 Sterling, the average sunshine in September is 8.9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Sterling?

In September, in Sterling, Kansas, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 62.1°F (16.7°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that factores the actual air temperature with the relative humidity, is appraised at 84.4°F (29.1°C).

What is the average humidity in September in Sterling?

The average relative humidity in September in Sterling is 64%.

How many days does it rain in September in Sterling?

In Sterling, Kansas, during September, the rain falls for 11.6 days and regularly aggregates up to 1.89" (48mm) of precipitation.

Does it snow in Sterling in September?

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

When it does not snow in Sterling?

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

How many hours of daylight does Sterling have in September?

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

How long on average sun shines in September in Sterling?

In Sterling, Kansas, the average sunshine in September is 8.9h.

What is the UV index reading in September in Sterling?

The average daily maximum UV index in September in Sterling is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in September - Sterling, KS
  • Average high temperature in September: 81.5°F

The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (42.4°F).

  • Average low temperature in September: 62.1°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in September - Sterling, KS
  • Average pressure in September: 29.98"

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

Average wind speed in September - Sterling, KS
  • Average wind speed in September: 10.6mph

The windiest month (with the highest average wind speed) is April (12.9mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).

Average humidity in September - Sterling, KS
  • Average humidity in September: 64%

The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is July (59%).

Average rainfall in September - Sterling, KS
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is May (3.82").
The driest months (with the least rainfall) are January and February (0.67").

Average rainfall days in September - Sterling, KS
  • Average rainfall days in September: 11.6 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is January (2.7 days).

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

The month with the highest snowfall is February (2.36").
Months with the least snowfall are May, June, July, August and September (0").

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

The month with the highest number of snowfall days is February (4.8 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 8.9h

The month with the most sunshine is July (Average sunshine: 11.2h).
The month with the least sunshine is January (Average sunshine: 6.2h).

Average sunshine days in September - Sterling, KS
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is December (23.9 days).
The month with the least sunshine days is July (13.2 days).

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in September - Sterling, KS
  • Average cloud cover in September: 24

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is June (Cloud cover 20).

Average visibility in September - Sterling, 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).