September weather forecastWashington, KS
September
Weather in September
September, the first month of the autumn in Washington, is also a moderately hot month, with an average temperature fluctuating between 78.4°F (25.8°C) and 58.8°F (14.9°C).Temperature
During the shift to September, Washington records a mild decrease in average high-temperature, moving from a moderately hot 85.5°F (29.7°C) in August to a still warm 78.4°F (25.8°C). Throughout September, the temperature falls to an average low of 58.8°F (14.9°C).Humidity
In Washington, the average relative humidity in September is 70%.Rainfall
In Washington, during September, the rain falls for 12.4 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Washington, during the entire year, the rain falls for 127.7 days and collects up to 24.92" (633mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Washington, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:56 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:11 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Washington, KS
- Average high temperature in September: 78.4°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 58.8°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in September
Washington, KS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Washington, KS
- Average wind speed in September: 9mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in September
Washington, KS
- Average humidity in September: 70%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is October (65%).
Average rainfall in September
Washington, KS
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in September
Washington, KS
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Washington, KS
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Washington, KS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Washington, KS
- Average daylight in September: 12h and 24min
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 24min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Washington, KS
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in September
Washington, 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
Washington, KS
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are June, July and August (Cloud cover 25).
Average visibility in September
Washington, 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).
