Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Knob Noster's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's moderately hot 84.7°F (29.3°C) to a still warm 78.8°F (26°C). During the nights in September, Knob Noster experiences a consistent average temperature of 59.4°F (15.2°C).Humidity
The average relative humidity in September is 75%.Rainfall
In Knob Noster, during September, the rain falls for 12.1 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Knob Noster, during the entire year, the rain falls for 139.6 days and collects up to 28.43" (722mm) of precipitation.Snowfall
June through September are months without snowfall in Knob Noster, Missouri.Daylight
The average length of the day in September in Knob Noster is 12h and 26min.On the first day of the month, sunrise is at 6:44 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:58 pm CDT.
Sunshine
In Knob Noster, Missouri, the average sunshine in September is 9.4h.UV index
In Knob Noster, Missouri, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Undertake precautions - Guarding against sun damage is counselled. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Knob Noster in September?
What is the average humidity in September in Knob Noster?
How many days does it rain in September in Knob Noster?
When it does not snow in Knob Noster?
Does it snow in Knob Noster in September?
What is the average length of the day in September in Knob Noster?
What time are sunrise and sunset in September in Knob Noster?
How many hours of sunshine does Knob Noster have in September?
What is the UV index intensity in September in Knob Noster?
Average temperature in September
Knob Noster, MO
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Knob Noster, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Knob Noster, MO
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in September
Knob Noster, MO
- Average humidity in September: 75%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Knob Noster, MO
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in September
Knob Noster, MO
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in September
Knob Noster, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Knob Noster, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Knob Noster, MO
- 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 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Knob Noster, MO
- Average sunshine days in September: 15.8 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in September
Knob Noster, 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
Knob Noster, MO
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Knob Noster, 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).
Knob Noster, Missouri, USA
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