September weather forecastBlairstown, MO
September
Weather in September
September, the first month of the autumn in Blairstown, is also a moderately hot month, with an average temperature fluctuating between 78.6°F (25.9°C) and 59.4°F (15.2°C).Temperature
A minor decrease in the average high-temperature is observed during September, shifting from a warm 84.4°F (29.1°C) in August to a still moderately hot 78.6°F (25.9°C). September nights cool down to an average low-temperature of 59.4°F (15.2°C).Humidity
In Blairstown, the average relative humidity in September is 76%.Rainfall
In Blairstown, in September, during 12.1 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Blairstown, during the entire year, the rain falls for 138.6 days and collects up to 28.31" (719mm) of precipitation.Snowfall
In Blairstown, snow does not fall in April, June through September.Daylight
In Blairstown, the average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 6:45 am and sunset at 7:45 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 9.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Take precautions - Protection against sunburn is recommended. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Blairstown, MO
- Average high temperature in September: 78.6°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.8°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
Blairstown, 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
Blairstown, MO
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity in September
Blairstown, MO
- Average humidity in September: 76%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Blairstown, MO
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in September
Blairstown, MO
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in September
Blairstown, MO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.31").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in September
Blairstown, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Blairstown, 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 24min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Blairstown, MO
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is December (22 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in September
Blairstown, 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
Blairstown, MO
- Average cloud cover in September: 29
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
Blairstown, 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).
