September weather forecastAlpha, OH
September
Weather in September
September, the first month of the autumn in Alpha, is still a warm month, with an average temperature fluctuating between 75°F (23.9°C) and 57°F (13.9°C).Temperature
The average high-temperature for September is a still moderately hot 75°F (23.9°C), closely aligning with the temperature of the preceding month. September in Alpha sees the temperature falling to a mean low of 57°F (13.9°C).Humidity
In Alpha, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 13 days. Throughout September, 1.65" (42mm) of precipitation is accumulated. In Alpha, during the entire year, the rain falls for 154.5 days and collects up to 25.24" (641mm) of precipitation.Snowfall
May through October are months without snowfall in Alpha.Daylight
The average length of the day in September in Alpha, Ohio, is 12h and 26min.On the first day of the month, sunrise is at 7:04 am and sunset at 8:06 pm. On the last day of September, sunrise is at 7:32 am and sunset at 7:19 pm EDT.
Sunshine
In September, the average sunshine in Alpha is 8.3h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Alpha, OH
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in September: 57°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in September
Alpha, OH
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Alpha, OH
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Alpha, OH
- Average humidity in September: 77%
The months with the highest relative humidity are January, February and December (82%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Alpha, OH
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is October (1.54").
Average rainfall days in September
Alpha, OH
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (8 days).
Average snowfall in September
Alpha, OH
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (2.44").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Alpha, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Alpha, OH
- 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 24min).
- Average sunshine in September: 8h and 18min
The months with the most sunshine are June and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Alpha, OH
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in September
Alpha, OH
- Average UV index in September: 4
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, October, November and December (UV index 2).
Average cloud cover in September
Alpha, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Alpha, OH
- 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).
