September weather forecastKnox City, MO
September
Weather in September
The first month of the autumn, September, is still a warm month in Knox City, Missouri, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 57.7°F (14.3°C).Temperature
September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from 83.3°F (28.5°C) in August to a still warm 77.5°F (25.3°C). Knox City's average low-temperature during September nights is observed to be a mild 57.7°F (14.3°C).Humidity
In September, the average relative humidity in Knox City is 75%.Rainfall
In Knox City, in September, during 10.5 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. Throughout the year, there are 130.9 rainfall days, and 26.3" (668mm) of precipitation is accumulated.Snowfall
In Knox City, snow does not fall in May through September.Daylight
The average length of the day in September in Knox City, Missouri, is 12h and 26min.On the first day of September, sunrise is at 6:36 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:51 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Take precautions - Protection against sunburn is recommended. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Knox City, MO
- Average high temperature in September: 77.5°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Knox City, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Knox City, MO
- Average wind speed in September: 7.5mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).
Average humidity in September
Knox City, MO
- Average humidity in September: 75%
The months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Knox City, MO
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in September
Knox City, MO
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Knox City, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Knox City, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Knox City, MO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Knox City, MO
- Average sunshine days in September: 18 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12 days).
Average UV index in September
Knox City, MO
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Knox City, MO
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Knox City, MO
- 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).
