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
Cliff Williams's September average high-temperature settles at a still tropical 86.9°F (30.5°C), showing a near match with the preceding month. Cliff Williams throughout September, records an average low-temperature of 67.1°F (19.5°C).Heat index
The heat index value for September is calculated to be a torrid 98.6°F (37°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.
Humidity
The average relative humidity in September in Cliff Williams, Mississippi, is 74%.Rainfall
In Cliff Williams, in September, it is raining for 13.9 days, with typically 2.4" (61mm) of accumulated precipitation. In Cliff Williams, during the entire year, the rain falls for 158.9 days and collects up to 31.57" (802mm) of precipitation.Snowfall
In Cliff Williams, snow does not fall in March through October.Daylight
The average length of the day in September is 12h and 21min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:18 pm. On the last day of September, in Cliff Williams, sunrise is at 6:48 am and sunset at 6:40 pm CDT.
Sunshine
In Cliff Williams, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
How hot does it get in Cliff Williams in September?
What is the average humidity in September in Cliff Williams?
How many days does it rain in September in Cliff Williams?
When it does not snow in Cliff Williams?
What is the average length of the day in September in Cliff Williams?
What time are sunrise and sunset in September in Cliff Williams?
How many hours of sunshine does Cliff Williams have in September?
How high is the UV index in September in Cliff Williams?
Average temperature in September
Cliff Williams, MS
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (54.5°F).
- Average low temperature in September: 67.1°F
The months with the highest average low temperature are July and August (71.6°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in September
Cliff Williams, 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
Cliff Williams, MS
- Average wind speed in September: 5mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Cliff Williams, MS
- Average humidity in September: 74%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Cliff Williams, MS
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is August (3.27").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in September
Cliff Williams, MS
- Average rainfall days in September: 13.9 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in September
Cliff Williams, MS
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.39").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Cliff Williams, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (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
Cliff Williams, 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 1min
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 48min).
Average sunshine days in September
Cliff Williams, MS
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in September
Cliff Williams, 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
Cliff Williams, MS
- Average cloud cover in September: 31
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Cliff Williams, MS
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are May, July and September (5mi).
Cliff Williams, Mississippi, USA
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