September weather forecastMyrtle, MS
September
Weather in September
September, the first month of the autumn in Myrtle, is still a warm month, with temperature in the range of an average high of 85.1°F (29.5°C) and an average low of 64.6°F (18.1°C).Temperature
As September commences, the average high-temperature subtly reduces, transitioning from a tropical 90.5°F (32.5°C) in August to a moderately hot 85.1°F (29.5°C). The average low-temperature of 64.6°F (18.1°C) is witnessed during September.Heat index
September's mean heat index is computed to be a tropical 93.2°F (34°C). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humidity
In Myrtle, the average relative humidity in September is 72%.Rainfall
The month with the least rainfall is September, when the rain falls for 9 days and typically collects 0.59" (15mm) of precipitation.Snowfall
March through December are months without snowfall.Daylight
In Myrtle, Mississippi, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:50 am and sunset at 6:41 pm CDT.
Sunshine
In Myrtle, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index, 5 in September, converts into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Myrtle, MS
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in September: 64.6°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 (34.2°F).
Average pressure in September
Myrtle, MS
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Myrtle, MS
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Myrtle, MS
- Average humidity in September: 72%
The months with the highest relative humidity are March and December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Myrtle, MS
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is July (1.57").
The driest month (with the least rainfall) is September (0.59").
Average rainfall days in September
Myrtle, MS
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in September
Myrtle, MS
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Myrtle, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Myrtle, MS
- Average daylight in September: 12h and 24min
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 12min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Myrtle, MS
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is July (13.9 days).
Average UV index in September
Myrtle, MS
- 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 December (UV index 2).
Average cloud cover in September
Myrtle, MS
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in September
Myrtle, MS
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
