September weather forecastHays, KS
September
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in September /
Average sunshine in September
Hays, KS
- Average daylight in September: 12h and 24min
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).
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).
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).
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).
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).
