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
Entering September, the average high-temperature is recorded at a still tropical 86.2°F (30.1°C), exhibiting a minimal shift from August's 90.9°F (32.7°C). Throughout the month of September, Walnut Grove reports a steady low-temperature average of 66.7°F (19.3°C).Heat index
September's average heat index is computed to be a sweltering 96.8°F (36°C). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.For clarity, heat index numbers account for light winds and areas under shade. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
The average relative humidity in September is 73%.Rainfall
In Walnut Grove, during September, the rain falls for 12 days and regularly aggregates up to 1.81" (46mm) of precipitation. In Walnut Grove, during the entire year, the rain falls for 146.9 days and collects up to 24.84" (631mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:33 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:43 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in Walnut Grove in September?
When it does not snow?
How many hours of daylight does Walnut Grove have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Walnut Grove have in September?
How high is the UV index in September?
Average temperature in September
Walnut Grove, MS
- Average high temperature in September: 86.2°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (53.2°F).
- Average low temperature in September: 66.7°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (37°F).
Average pressure in September
Walnut Grove, MS
- Average pressure in September: 29.99"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
Walnut Grove, MS
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.7mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity in September
Walnut Grove, MS
- Average humidity in September: 73%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Walnut Grove, MS
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in September
Walnut Grove, MS
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is October (7.5 days).
Average snowfall in September
Walnut Grove, 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, October and November (0").
Average snowfall days in September
Walnut Grove, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Walnut Grove, 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 6min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Walnut Grove, MS
- Average sunshine days in September: 15.9 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in September
Walnut Grove, 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
Walnut Grove, MS
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are September and October (Cloud cover 29).
Average visibility in September
Walnut Grove, MS
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Walnut Grove, Mississippi, USA
Weather forecast for your location
2. Allow the app to use your location