September weather forecastTerrell, MS
September
Weather in September
September, the first month of the autumn in Terrell, is also a hot month, with an average temperature fluctuating between 87.4°F (30.8°C) and 67.8°F (19.9°C).Temperature
With September's advent, Terrell sees an average high-temperature of a still hot 87.4°F (30.8°C), subtly shifted from August's 91.4°F (33°C). Terrell's average low-temperature for the month of September records at an enjoyable 67.8°F (19.9°C).Heat index
September's heat index is estimated at a fiery hot 102.2°F (39°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
The average relative humidity in September is 75%.Rainfall
In Terrell, in September, during 15 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. In Terrell, Mississippi, during the entire year, the rain falls for 168 days and collects up to 34.17" (868mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Terrell, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:35 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:44 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Terrell, MS
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (91.4°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 67.8°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (39°F).
Average pressure in September
Terrell, MS
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Terrell, MS
- Average wind speed in September: 5mph
The windiest months (with the highest average wind speed) are January, February and April (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in September
Terrell, MS
- Average humidity in September: 75%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Terrell, MS
- Average rainfall in September: 2.56"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in September
Terrell, MS
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is August (20.3 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Terrell, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Terrell, MS
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.3 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
Terrell, MS
- Average daylight in September: 12h and 18min
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 18min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in September
Terrell, MS
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is August (9 days).
Average UV index in September
Terrell, MS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Terrell, MS
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Terrell, 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).
