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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a tropical 87.1°F (30.6°C) in August to a moderately hot 79.9°F (26.6°C). An average nighttime temperature of 59.4°F (15.2°C) is recorded during September.Humidity
In Henley, the average relative humidity in September is 74%.Rainfall
In Henley, in September, during 10.9 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. Throughout the year, there are 136.8 rainfall days, and 26.18" (665mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In Henley, Missouri, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:38 pm. On the last day of September, in Henley, sunrise is at 7:04 am and sunset at 6:53 pm CDT.
Sunshine
In Henley, the average sunshine in September is 9.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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 in Henley?
How much does it rain in September?
When it does not snow in Henley?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September in Henley?
What is the UV index reading in September?
Average temperature in September
Henley, MO
- Average high temperature in September: 79.9°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in September: 59.4°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in September
Henley, MO
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Henley, MO
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are January and March (8.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in September
Henley, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are August and October (73%).
Average rainfall in September
Henley, MO
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in September
Henley, MO
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is May (16.3 days).
The months with the least rainy days are January and December (6.7 days).
Average snowfall in September
Henley, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Henley, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Henley, 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 month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in September
Henley, MO
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in September
Henley, 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
Henley, MO
- Average cloud cover in September: 30
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Henley, 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).
Henley, Missouri, USA
Weather forecast for your location
2. Allow the app to use your location