September weather forecastGreendoor, MO
September
Weather in September
September, the first month of the autumn in Greendoor, is still a warm month, with an average temperature ranging between max 78.6°F (25.9°C) and min 59.4°F (15.2°C).Temperature
As September arrives, Greendoor's weather displays a minor decrease in high-temperatures, transitioning from August's 84.6°F (29.2°C) to a still warm 78.6°F (25.9°C). An average temperature of 59.4°F (15.2°C) is recorded during the nights in September.Humidity
In September, the average relative humidity is 75%.Rainfall
In September, the rain falls for 11 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. In Greendoor, during the entire year, the rain falls for 131 days and collects up to 20.35" (517mm) of precipitation.Snowfall
In Greendoor, snow does not fall in May through September.Daylight
In Greendoor, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:11 am and sunset at 6:59 pm CDT.
Sunshine
In Greendoor, the average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Greendoor, MO
- Average high temperature in September: 78.6°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
Greendoor, 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
Greendoor, MO
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in September
Greendoor, MO
- Average humidity in September: 75%
The months with the highest relative humidity are May and June (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Greendoor, MO
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in September
Greendoor, MO
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in September
Greendoor, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Greendoor, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.3 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
Greendoor, MO
- 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 30min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Greendoor, MO
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is December (23.1 days).
The month with the least sunshine days is May (12 days).
Average UV index in September
Greendoor, MO
- Average UV index in September: 5
The months with the highest UV index are May, 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
Greendoor, MO
- Average cloud cover in September: 28
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
Greendoor, 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).
