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 average high-temperature for September is a moderately hot 85.6°F (29.8°C), closely aligning with the temperature of the preceding month. Throughout the nights in September, Walthall experiences an average low-temperature of 65.5°F (18.6°C).Heat index
The heat index in September is evaluated at a very hot 95°F (35°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.
Humidity
The average relative humidity in September in Walthall is 72%.Rainfall
In Walthall, in September, during 13.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In Walthall, during the entire year, the rain falls for 155 days and collects up to 33.07" (840mm) of precipitation.Snowfall
In Walthall, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:51 am and sunset at 6:42 pm CDT.
Sunshine
In September, the average sunshine in Walthall is 9.4h.UV index
In September, the average daily maximum UV index in Walthall is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Be vigilant - Preventing sunburn is recommended. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Walthall in September?
What is the average humidity in September in Walthall?
How many days does it rain in September in Walthall?
When it does not snow in Walthall?
How many hours of daylight does Walthall have in September?
What time are sunrise and sunset in September in Walthall?
How long on average sun shines in September in Walthall?
How high is the UV index in September in Walthall?
Average temperature in September
Walthall, MS
- Average high temperature in September: 85.6°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
Walthall, MS
- Average pressure in September: 30"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
Walthall, MS
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Walthall, MS
- Average humidity in September: 72%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Walthall, MS
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is November (1.69").
Average rainfall days in September
Walthall, MS
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in September
Walthall, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Walthall, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.3 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
Walthall, MS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Walthall, MS
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in September
Walthall, 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, February, November and December (UV index 3).
Average cloud cover in September
Walthall, MS
- Average cloud cover in September: 28
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in September
Walthall, MS
- 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).
Walthall, Mississippi, USA
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