September weather forecastSpanish Lake, MO
September
Weather in September
September in Spanish Lake presents an onset of autumn, with a noticeable decline in temperatures. The rainfall dips substantially to 2.01" (51mm) dispersed over 12.4 days, the lowest since March. Temperature readings are lesser than in August but higher than October. As autumn progresses, the daylight hours reduce further, resulting in cooler days. Wind speeds begin to pick up again after the calm summer season, providing a fresher feel to the atmosphere.Temperature
A modest decline in the average high-temperature is seen during September, decreasing from 85.3°F (29.6°C) in August to a still moderately hot 79.5°F (26.4°C). The average low-temperature of 59.9°F (15.5°C) is witnessed during September.Humidity
In September, the average relative humidity is 73%.Rainfall
In September, in Spanish Lake, the rain falls for 12.4 days. Throughout September, 2.01" (51mm) of precipitation is accumulated. In Spanish Lake, Missouri, during the entire year, the rain falls for 149 days and collects up to 31.61" (803mm) of precipitation.Snowfall
In Spanish Lake, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:30 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:44 pm CDT.
Sunshine
In September, the average sunshine is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Spanish Lake, MO
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).
Average pressure in September
Spanish Lake, MO
- Average pressure in September: 30.02"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
Spanish Lake, MO
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in September
Spanish Lake, MO
- Average humidity in September: 73%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Spanish Lake, MO
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.82").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days in September
Spanish Lake, MO
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Spanish Lake, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.95").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Spanish Lake, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.7 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
Spanish Lake, 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 February (Average sunshine: 4h and 36min).
Average sunshine days in September
Spanish Lake, MO
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Spanish Lake, 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
Spanish Lake, MO
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Spanish Lake, 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).
