September weather forecast
Hays, KS

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Famous Picken Hall in the Fort Hays State University, Kansas
Famous Picken Hall in the Fort Hays State University, Kansas

Weather in September

Septemper ushers in signs of autumn in Hays, Kansas, as temperatures take a noticeable dip from summer highs. The wind picks up the pace, ensuring that balmy summer afternoons are taken over by cooler breezes. Only 1.3" (33mm) of rainfall is recorded in September, suggesting drier days compared to the wet summer months. There is a gradual decrease in daylight hours and temperature as the city braces for the chill of the upcoming months. In October, the decline continues, and the fall season becomes more pronounced.

Temperature

The average high-temperature in Hays slightly decreases in September, shifting from a hot 90°F (32.2°C) in August to a warm 81.9°F (27.7°C). In Hays, September nights cool down to an average of 61.3°F (16.3°C).

Heat index

In September, the heat index is computed to be 84.2°F (29°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

The average relative humidity in September in Hays, Kansas, is 59%.

Rainfall

In September, in Hays, the rain falls for 10.3 days. Throughout September, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 112.7 rainfall days, and 17.6" (447mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Hays, the average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 7:06 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:21 pm CDT.

Sunshine

The average sunshine in September is 9h.

UV index

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high UV index of 5 in September translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
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Frequently asked questions

What are the temperatures in Hays in September?

During September, Hays experiences an average high-temperature of 81.9°F (27.7°C) and a low-temperature of 61.3°F (16.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in September is computed to be 84.2°F (29°C).

What is the average humidity in September in Hays?

In September, the average relative humidity in Hays is 59%.

How many days does it rain in September in Hays?

In Hays, in September, during 10.3 rainfall days, 1.3" (33mm) of precipitation is typically accumulated.

When it does not snow in Hays?

June through September are months without snowfall in Hays, Kansas.

Does it snow in Hays in September?

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

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

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

When are sunrise and sunset in September in Hays?

On the first day of September in Hays, sunrise is at 7:06 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:21 pm CDT.

How long on average sun shines in September in Hays?

The average sunshine duration in September in Hays is 9h.

What is the UV index reading in September in Hays?

In September, the average daily maximum UV index in Hays, Kansas, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's 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
Hays, KS

Average temperature in September - Hays, KS
  • Average high temperature in September: 81.9°F

The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (41.9°F).

  • Average low temperature in September: 61.3°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in September
Hays, KS

Average pressure in September - Hays, KS
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in September
Hays, KS

Average wind speed in September - Hays, KS
  • Average wind speed in September: 10.9mph

The windiest month (with the highest average wind speed) is April (12.5mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

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Average humidity in September
Hays, KS

Average humidity in September - Hays, KS
  • Average humidity in September: 59%

The months with the highest relative humidity are January and December (66%).
The month with the lowest relative humidity is July (54%).

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Average rainfall in September
Hays, KS

Average rainfall in September - Hays, KS
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in September
Hays, KS

Average rainfall days in September - Hays, KS
  • Average rainfall days in September: 10.3 days

The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (3.8 days).

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Average snowfall in September
Hays, KS

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

The month with the highest snowfall is February (1.97").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Hays, KS

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

The month with the highest number of snowfall days is February (6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 6h and 18min).

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Average sunshine days in September
Hays, KS

Average sunshine days in September - Hays, KS
  • Average sunshine days in September: 16.6 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (12.8 days).

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Average UV index in September
Hays, KS

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

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

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Average cloud cover in September
Hays, KS

Average cloud cover in September - Hays, KS
  • Average cloud cover in September: 22

The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is June (Cloud cover 19).

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Average visibility in September
Hays, KS

Average visibility in September - Hays, 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).

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Hays, Kansas, USA

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