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
A mild drop in Catawba's average high-temperature is observed in September, transitioning from a hot 88.7°F (31.5°C) in August to a moderately hot 83.3°F (28.5°C). In Catawba, the average temperature during the nights of September drops to an enjoyable 64.2°F (17.9°C).Heat index
For September, the heat index is estimated at a hot 89.6°F (32°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In Catawba, the average relative humidity in September is 72%.Rainfall
September and October are months with the least rain when the rain falls for 11.5 days and typically aggregates up to 1.81" (46mm) of rain.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:57 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:08 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
The average daily maximum UV index in September in Catawba is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it 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?
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?
How high is the UV index in September?
Average temperature in September
Catawba, SC
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in September: 64.2°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).
Average pressure in September
Catawba, SC
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Catawba, SC
- Average wind speed in September: 5.4mph
The windiest months (with the highest average wind speed) are February and April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Catawba, SC
- Average humidity in September: 72%
The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Catawba, SC
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is August (3.23").
The driest months (with the least rainfall) are September and October (1.81").
Average rainfall days in September
Catawba, SC
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in September
Catawba, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.26").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Catawba, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Catawba, SC
- 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 54min).
- Average sunshine in September: 8h and 4min
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 18min).
Average sunshine days in September
Catawba, SC
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is October (22 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Catawba, SC
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Catawba, SC
- Average cloud cover in September: 34
The months with the most cloud cover are February and December (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in September
Catawba, SC
- 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).
Catawba, South Carolina, USA
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