September weather forecastSaint Rosa, OH
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Saint Rosa, Ohio, with temperature in the range of an average low of 56.1°F (13.4°C) and an average high of 73.8°F (23.2°C).Temperature
The arrival of September brings an average high-temperature of a still moderately hot 73.8°F (23.2°C), nearly identical to August's 79°F (26.1°C). In Saint Rosa, an average low-temperature of 56.1°F (13.4°C) is recorded during September nights.Humidity
The average relative humidity in September is 79%.Rainfall
In Saint Rosa, in September, it is raining for 11.4 days, with typically 1.46" (37mm) of accumulated precipitation. In Saint Rosa, during the entire year, the rain falls for 147.5 days and collects up to 21.3" (541mm) of precipitation.Snowfall
In Saint Rosa, Ohio, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:09 pm. On the last day of September, sunrise is at 7:34 am and sunset at 7:21 pm EDT.
Sunshine
In September, the average sunshine is 8h.UV index
In Saint Rosa, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Saint Rosa, OH
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Saint Rosa, OH
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Saint Rosa, OH
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Saint Rosa, OH
- Average humidity in September: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Saint Rosa, OH
- Average rainfall in September: 1.46"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in September
Saint Rosa, OH
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Saint Rosa, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Saint Rosa, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint Rosa, OH
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Saint Rosa, OH
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Saint Rosa, OH
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Saint Rosa, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Saint Rosa, OH
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
