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
Gratis starts September with an average high-temperature of a still moderately hot 75°F (23.9°C), a minor shift from August's 80.2°F (26.8°C). Gratis observes an average nighttime temperature of 57°F (13.9°C) during September.Humidity
In September, the average relative humidity is 77%.Rainfall
In Gratis, Ohio, in September, it is raining for 9.7 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, there are 124.4 rainfall days, and 11.89" (302mm) of precipitation is accumulated.Snowfall
In Gratis, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:08 pm. On the last day of September, sunrise is at 7:34 am and sunset at 7:21 pm EDT.
Sunshine
The average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Gratis in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Gratis, 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 (21.6°F).
Average pressure in September
Gratis, OH
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Gratis, OH
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Gratis, 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 (75%).
Average rainfall in September
Gratis, OH
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is May (1.81").
The driest month (with the least rainfall) is November (0.67").
Average rainfall days in September
Gratis, OH
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Gratis, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.94").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Gratis, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Gratis, OH
- Average daylight in September: 12h and 2min
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 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Gratis, OH
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (12.2 days).
Average UV index in September
Gratis, 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, November and December (UV index 2).
Average cloud cover in September
Gratis, OH
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Gratis, 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).
Gratis, Ohio, USA
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