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 transition from August to September sees an average high-temperature of a moderately hot 83.7°F (28.7°C), indicating a minor variance from the prior month. Throughout September, the average low-temperature in Lamar dips to an enjoyable 66.6°F (19.2°C).Heat index
In September, the heat index is appraised at a tropical 91.4°F (33°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Humidity
May, August and September, with an average relative humidity of 77%, are the most humid months.Rainfall
In Lamar, in September, during 9.2 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 123.1 rainfall days, and 13.19" (335mm) of precipitation is accumulated.Snowfall
In Lamar, snow does not fall in March through November.Daylight
In Lamar, South Carolina, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:45 pm. On the last day of September, in Lamar, South Carolina, sunrise is at 7:14 am and sunset at 7:05 pm EDT.
Sunshine
The average sunshine in September in Lamar, South Carolina, is 9.1h.UV index
In September, the average daily maximum UV index in Lamar is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 6 in September leads to these recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Lamar in September?
What are the most humid months in Lamar?
What is the average humidity in September in Lamar?
How many days does it rain in September in Lamar?
When it does not snow in Lamar?
How many hours of daylight does Lamar have in September?
When are sunrise and sunset in September in Lamar?
How long on average sun shines in September in Lamar?
What is the UV index intensity in September in Lamar?
Average temperature in September
Lamar, SC
- Average high temperature in September: 83.7°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (52.3°F).
- Average low temperature in September: 66.6°F
The month with the highest average low temperature is July (72.7°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).
Average pressure in September
Lamar, SC
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Lamar, SC
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Lamar, SC
- Average humidity in September: 77%
The months with the highest relative humidity are May, August and September (77%).
The months with the lowest relative humidity are January and November (72%).
Average rainfall in September
Lamar, SC
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is August (1.57").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in September
Lamar, SC
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (5.7 days).
Average snowfall in September
Lamar, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Lamar, SC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.4 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
Lamar, SC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Lamar, SC
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is November (23.3 days).
The month with the least sunshine days is July (12.7 days).
Average UV index in September
Lamar, SC
- Average UV index in September: 6
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
Lamar, SC
- Average cloud cover in September: 33
The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 29).
Average visibility in September
Lamar, 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).
Lamar, South Carolina, USA
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