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
West Jefferson's transition from August to September introduces an average high-temperature of a warm 85.1°F (29.5°C), marking an insignificant variation from the 90.1°F (32.3°C). West Jefferson's temperature in September lowers to a consistent average of 65.3°F (18.5°C) during the nights.Heat index
The average heat index in September is evaluated at a hot 93.2°F (34°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. 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.
Humidity
In September, the average relative humidity is 72%.Rainfall
The month with the least rainfall is September, when the rain falls for 11.3 days and typically collects 0.75" (19mm) of precipitation.Snowfall
In West Jefferson, Alabama, snow does not fall in March through October.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:22 am and sunset at 7:13 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:33 pm CDT.
Sunshine
In West Jefferson, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 6 in September leads to these recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
How hot is September in West Jefferson?
What is the average humidity in September in West Jefferson?
What is the driest month in West Jefferson?
How much does it rain in West Jefferson in September?
When it does not snow in West Jefferson?
How many hours of daylight does West Jefferson have in September?
When are sunrise and sunset in September in West Jefferson?
How long on average sun shines in September in West Jefferson?
How high is the UV index in September in West Jefferson?
Average temperature in September
West Jefferson, AL
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in September: 65.3°F
The months with the highest average low temperature are July and August (70.3°F).
The coldest month (with the lowest average low temperature) is January (35.1°F).
Average pressure in September
West Jefferson, AL
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
West Jefferson, AL
- Average wind speed in September: 5mph
The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
West Jefferson, AL
- Average humidity in September: 72%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
West Jefferson, AL
- Average rainfall in September: 0.75"
The wettest months (with the highest rainfall) are July and August (1.46").
The driest month (with the least rainfall) is September (0.75").
Average rainfall days in September
West Jefferson, AL
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (15.8 days).
The months with the least rainy days are October and November (7.1 days).
Average snowfall in September
West Jefferson, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.28").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
West Jefferson, AL
- 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
West Jefferson, AL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
West Jefferson, AL
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is October (22.6 days).
The month with the least sunshine days is July (11.5 days).
Average UV index in September
West Jefferson, AL
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
West Jefferson, AL
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility in September
West Jefferson, AL
- 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).
West Jefferson, Alabama, USA
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