September weather forecastBoonville, MO
September
Weather in September
The first month of the autumn, September, is still a warm month in Boonville, Missouri, with an average temperature varying between 79.5°F (26.4°C) and 59°F (15°C).Temperature
Boonville's September weather shows a modest shift in high-temperatures, falling from August's 85.5°F (29.7°C) to a still warm 79.5°F (26.4°C). In the month of September, Boonville records a consistent average low-temperature of 59°F (15°C).Humidity
In Boonville, the average relative humidity in September is 74%.Rainfall
In Boonville, during September, the rain falls for 11.9 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Boonville, during the entire year, the rain falls for 136.6 days and collects up to 28.31" (719mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 6:40 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:54 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Boonville, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Boonville, 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 (36.9°F).
- Average low temperature in September: 59°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in September
Boonville, 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 (29.91"Hg).
Average wind speed in September
Boonville, MO
- Average wind speed in September: 6.9mph
The windiest month (with the highest average wind speed) is March (9.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in September
Boonville, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Boonville, MO
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is January (1.26").
Average rainfall days in September
Boonville, MO
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
Boonville, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Boonville, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Boonville, MO
- Average daylight in September: 12h and 24min
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 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Boonville, MO
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in September
Boonville, 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
Boonville, MO
- Average cloud cover in September: 29
The months with the most cloud cover are January, February and March (Cloud cover 48).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in September
Boonville, 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).
