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
The arrival of September sees an average high-temperature of a still warm 73.6°F (23.1°C), hardly diverging from August's 78.6°F (25.9°C). In September, Roundhead's temperature tends to fall to an average low of 55.4°F (13°C) during the night.Humidity
In Roundhead, the average relative humidity in September is 80%.Rainfall
In Roundhead, during September, the rain falls for 15.2 days and regularly aggregates up to 2.2" (56mm) of precipitation. Throughout the year, there are 173.3 rainfall days, and 33.43" (849mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Roundhead is 12h and 27min.On the first day of the month, sunrise is at 7:03 am and sunset at 8:06 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:18 pm EDT.
Sunshine
The average sunshine in September is 7.9h.UV index
The average daily maximum UV index in September in Roundhead is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Roundhead in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Roundhead have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Roundhead, OH
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in September
Roundhead, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Roundhead, OH
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Roundhead, OH
- Average humidity in September: 80%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Roundhead, OH
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in September
Roundhead, OH
- Average rainfall days in September: 15.2 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Roundhead, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Roundhead, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Roundhead, OH
- Average daylight in September: 12h and 2min
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: 7h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Roundhead, OH
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (8.5 days).
Average UV index in September
Roundhead, OH
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Roundhead, OH
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Roundhead, OH
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Roundhead, Ohio, USA
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