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
As Harriston welcomes September, the average high-temperature is noted at a still tropical 87.3°F (30.7°C), closely aligning with the preceding month. An average temperature of 67.8°F (19.9°C) marks the nights in September.Heat index
The heat index for September is computed to be a torrid 102.2°F (39°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Observations indicate that the heat index values are for shady locations with light wind. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
The average relative humidity in September is 76%.Rainfall
In Harriston, during September, the rain falls for 15.5 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Harriston, during the entire year, the rain falls for 162.8 days and collects up to 34.33" (872mm) of precipitation.Snowfall
In Harriston, snow does not fall in March through November.Daylight
In September, the average length of the day is 12h and 21min.On the first day of September, sunrise is at 6:40 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:49 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In Harriston, Mississippi, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 in September translates into these instructions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Harriston in September?
What is the average humidity in September in Harriston?
How many days does it rain in September in Harriston?
When it does not snow in Harriston?
What is the average length of the day in September in Harriston?
What time are sunrise and sunset in September in Harriston?
How long on average sun shines in September in Harriston?
What is the UV index intensity in September in Harriston?
Average temperature in September
Harriston, MS
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (55.4°F).
- Average low temperature in September: 67.8°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 (40.1°F).
Average pressure in September
Harriston, MS
- Average pressure in September: 29.98"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
Harriston, MS
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is February (7.6mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).
Average humidity in September
Harriston, MS
- Average humidity in September: 76%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Harriston, MS
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in September
Harriston, MS
- Average rainfall days in September: 15.5 days
The month with the highest number of rainy days is August (19.5 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in September
Harriston, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Harriston, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1 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
Harriston, MS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Harriston, MS
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (9.2 days).
Average UV index in September
Harriston, MS
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Harriston, MS
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Harriston, MS
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, October, November and December (6mi).
The months with the lowest visibility are May, July, August and September (5mi).
Harriston, Mississippi, USA
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