September weather forecastOttawa Hills, OH
September
Weather in September
September, the first month of the autumn in Ottawa Hills, is also an agreeable month, with an average temperature fluctuating between 55.9°F (13.3°C) and 73.2°F (22.9°C).Temperature
As August transitions into September, Ottawa Hills sees a gentle drop in the average high-temperature, transitioning from a moderately hot 78.6°F (25.9°C) to an agreeable 73.2°F (22.9°C). In the month of September, Ottawa Hills experiences an average low-temperature of 55.9°F (13.3°C).Humidity
The average relative humidity in September is 78%.Rainfall
In Ottawa Hills, Ohio, in September, it is raining for 11.5 days, with typically 0.83" (21mm) of accumulated precipitation. In Ottawa Hills, Ohio, during the entire year, the rain falls for 135.5 days and collects up to 14.37" (365mm) of precipitation.Snowfall
May through September are months without snowfall in Ottawa Hills, Ohio.Daylight
The average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 7:01 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:17 pm EDT.
Sunshine
The average sunshine in September is 8.1h.UV index
In Ottawa Hills, 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 exposure to the Sun's UV rays for ordinary individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ottawa Hills, OH
- Average high temperature in September: 73.2°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in September: 55.9°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°F).
Average pressure in September
Ottawa Hills, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Ottawa Hills, OH
- Average wind speed in September: 7mph
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 (6.2mph).
Average humidity in September
Ottawa Hills, OH
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Ottawa Hills, OH
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is June (1.81").
The driest month (with the least rainfall) is December (0.63").
Average rainfall days in September
Ottawa Hills, OH
- Average rainfall days in September: 11.5 days
The months with the highest number of rainy days are May and June (15.6 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
Ottawa Hills, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Ottawa Hills, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Ottawa Hills, OH
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Ottawa Hills, OH
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Ottawa Hills, OH
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Ottawa Hills, OH
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in September
Ottawa Hills, 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).
