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
McCormick records an average high-temperature of a moderately hot 85.3°F (29.6°C) in September, closely mirroring the climate of the previous month. McCormick reports an average nighttime low-temperature of 65.3°F (18.5°C) in September.Heat index
In September, the average heat index is appraised at a tropical 93.2°F (34°C). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
In McCormick, the average relative humidity in September is 71%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.6 days and typically collects 1.42" (36mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In McCormick, South Carolina, the average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 7:03 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:14 pm EDT.
Sunshine
In September, the average sunshine is 8.6h.UV index
In McCormick, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Enhance your sun protection with tightly woven, yet airy clothing.
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 many days 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 in McCormick?
How high is the UV index in September?
Average temperature in September
McCormick, SC
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is January (52.3°F).
- Average low temperature in September: 65.3°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
McCormick, SC
- Average pressure in September: 30.02"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
McCormick, SC
- Average wind speed in September: 5.3mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
McCormick, SC
- Average humidity in September: 71%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
McCormick, SC
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in September
McCormick, SC
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in September
McCormick, SC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.67").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
McCormick, 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
McCormick, 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: 8h and 4min
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 18min).
Average sunshine days in September
McCormick, SC
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
McCormick, SC
- Average UV index in September: 5
The months with the highest UV index are June and August (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
McCormick, SC
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
McCormick, 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).
McCormick, South Carolina, USA
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