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
September denotes a minimal variation in the average high-temperature to a pleasant 70.7°F (21.5°C) from August's 75.7°F (24.3°C). In Castalia, September nights cool down to an average of 61°F (16.1°C).Humidity
In September, the average relative humidity is 77%.Rainfall
In Castalia, Ohio, during September, the rain falls for 14.4 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Castalia, during the entire year, the rain falls for 160.4 days and collects up to 32.99" (838mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of September in Castalia, sunrise is at 6:58 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:14 pm EDT.
Sunshine
In Castalia, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September in Castalia is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Take precautions - Protection against sunburn is recommended. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Castalia?
What is the average humidity in September in Castalia?
How much does it rain in Castalia in September?
When it does not snow in Castalia?
How many hours of daylight does Castalia have in September?
When is the sunrise / sunset in September in Castalia?
How many hours of sunshine does Castalia have in September?
What is the UV index intensity in September in Castalia?
Average temperature in September
Castalia, OH
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in September
Castalia, 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
Castalia, OH
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in September
Castalia, OH
- Average humidity in September: 77%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in September
Castalia, OH
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is June (4.41").
The driest months (with the least rainfall) are February and December (1.61").
Average rainfall days in September
Castalia, OH
- Average rainfall days in September: 14.4 days
The month with the highest number of rainy days is May (17.8 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in September
Castalia, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Castalia, 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, September and October (0 days).
Average daylight in September /
Average sunshine in September
Castalia, OH
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Castalia, OH
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is March (14.1 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in September
Castalia, 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
Castalia, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in September
Castalia, OH
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Castalia, Ohio, USA
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