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
The advent of September observes an average high-temperature of a moderately hot 81.7°F (27.6°C), nearly identical to August's 86.7°F (30.4°C). Calypso anticipates an average minimum temperature of 65.3°F (18.5°C) in the month of September.Heat index
The average heat index in September is evaluated at a hot 87.8°F (31°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Humidity
May, June, August and September, with an average relative humidity of 78%, are the most humid months.Rainfall
In Calypso, in September, during 13.8 rainfall days, 3.78" (96mm) of precipitation is typically accumulated. In Calypso, during the entire year, the rain falls for 166 days and collects up to 34.33" (872mm) of precipitation.Snowfall
In Calypso, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:45 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:57 pm EDT.
Sunshine
In September, the average sunshine is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 5 in September leads to these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. 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 September temperatures?
What is the most humid month?
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?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Calypso, NC
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).
Average pressure in September
Calypso, NC
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Calypso, NC
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Calypso, NC
- Average humidity in September: 78%
The months with the highest relative humidity are May, June, August and September (78%).
The month with the lowest relative humidity is January (73%).
Average rainfall in September
Calypso, NC
- Average rainfall in September: 3.78"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (1.77").
Average rainfall days in September
Calypso, NC
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Calypso, NC
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.83").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Calypso, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Calypso, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
Calypso, NC
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in September
Calypso, NC
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Calypso, NC
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 32).
Average visibility in September
Calypso, NC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Calypso, North Carolina, USA
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