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
Transitioning into September, Castine records an average high-temperature of a still warm 74.5°F (23.6°C), almost identical to August's 79.3°F (26.3°C). Castine sees an average low-temperature of 56.5°F (13.6°C) during September.Humidity
In Castine, Ohio, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 14.6 days and typically collects 2.17" (55mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Castine, Ohio, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 7:07 am and sunset at 8:09 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 7.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Make use of precautions - Suggestions to resist sunburn are communicated. Around midday, solar radiation is most harmful; hence, exposure should be limited. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Castine in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When 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
Castine, OH
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Castine, OH
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Castine, OH
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in September
Castine, OH
- Average humidity in September: 78%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Castine, OH
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in September
Castine, OH
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in September
Castine, OH
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.74").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Castine, 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
Castine, 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 24min).
- Average sunshine in September: 7h and 5min
The months with the most sunshine are June and July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Castine, OH
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in September
Castine, 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
Castine, OH
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Castine, 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).
Castine, Ohio, USA
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