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
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's 82.8°F (28.2°C) to a still warm 76.5°F (24.7°C). The low-temperature averages to a moderate 57.4°F (14.1°C) during the nights of September.Humidity
In Kilwinning, the average relative humidity in September is 75%.Rainfall
In Kilwinning, during September, the rain falls for 10.7 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Kilwinning, during the entire year, the rain falls for 136.6 days and collects up to 28.5" (724mm) of precipitation.Snowfall
In Kilwinning, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:40 pm. On the last day of September, in Kilwinning, sunrise is at 7:05 am and sunset at 6:52 pm CDT.
Sunshine
The average sunshine in September is 9.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 in September translates into these instructions:
Guard yourself - Avoiding sunburn is suggested. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Kilwinning have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Kilwinning, MO
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in September
Kilwinning, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Kilwinning, MO
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).
Average humidity in September
Kilwinning, MO
- Average humidity in September: 75%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Kilwinning, MO
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is June (4.09").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in September
Kilwinning, MO
- Average rainfall days in September: 10.7 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Kilwinning, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.09").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Kilwinning, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.5 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
Kilwinning, MO
- Average daylight in September: 12h and 2min
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 18min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Kilwinning, MO
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in September
Kilwinning, MO
- Average UV index in September: 4
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
Kilwinning, MO
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility in September
Kilwinning, 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).
Kilwinning, Missouri, USA
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