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
With the onset of September, the average high-temperature subtly recedes from August's 83.5°F (28.6°C) to a still warm 77.7°F (25.4°C). Richmond, during the month of September, experiences an average low-temperature of 58.6°F (14.8°C).Humidity
The average relative humidity in September is 76%.Rainfall
In September, in Richmond, the rain falls for 12.3 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. Throughout the year, in Richmond, there are 137 rainfall days, and 27.52" (699mm) of precipitation is accumulated.Snowfall
In Richmond, snow does not fall in June through September.Daylight
The average length of the day in September in Richmond is 12h and 26min.On the first day of September, sunrise is at 6:45 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:59 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 medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What are the temperatures in Richmond in September?
What is the average humidity in September in Richmond?
How much does it rain in Richmond in September?
When it does not snow in Richmond?
Does it snow in Richmond in September?
What is the average length of the day in September in Richmond?
When are sunrise and sunset in September in Richmond?
How many hours of sunshine does Richmond have in September?
What is the UV index reading in September in Richmond?
Average temperature in September
Richmond, MO
- Average high temperature in September: 77.7°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in September
Richmond, MO
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Richmond, MO
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Richmond, MO
- Average humidity in September: 76%
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
Richmond, MO
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in September
Richmond, MO
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in September
Richmond, 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
Richmond, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Richmond, MO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 1min
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 54min).
Average sunshine days in September
Richmond, MO
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Richmond, 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
Richmond, MO
- Average cloud cover in September: 30
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Richmond, 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).
Richmond, Missouri, USA
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