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
Transitioning from August to September, Needham observes an average high-temperature of a still tropical 87.8°F (31°C), differing subtly from the previous month. Needham registers a consistent average low-temperature of 67.1°F (19.5°C) during September.Heat index
The average heat index in September is appraised at a sweltering 102.2°F (39°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.
Humidity
In September, the average relative humidity is 74%.Rainfall
In Needham, Alabama, during September, the rain falls for 12.8 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, there are 138.6 rainfall days, and 19.33" (491mm) of precipitation is accumulated.Snowfall
In Needham, snow does not fall in April through November.Daylight
In Needham, Alabama, the average length of the day in September is 12h and 21min.On the first day of September, sunrise is at 6:29 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:39 pm CDT.
Sunshine
In September, the average sunshine is 9.1h.UV index
In September, the average daily maximum UV index in Needham is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 5 suggests this advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
Is it hot in Needham during September?
What is the average humidity in September in Needham?
How much does it rain in Needham in September?
When it does not snow in Needham?
How many hours of daylight does Needham have in September?
What time are sunrise and sunset in September in Needham?
How long on average sun shines in September in Needham?
How high is the UV index in September in Needham?
Average temperature in September
Needham, AL
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is January (55.2°F).
- Average low temperature in September: 67.1°F
The months with the highest average low temperature are July and August (72°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).
Average pressure in September
Needham, AL
- 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
Needham, AL
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in September
Needham, AL
- 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
Needham, AL
- Average rainfall in September: 1.42"
The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in September
Needham, AL
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (6.4 days).
Average snowfall in September
Needham, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Needham, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.5 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
Needham, AL
- 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 30min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Needham, AL
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (22.5 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in September
Needham, AL
- Average UV index in September: 5
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
Needham, AL
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 31).
Average visibility in September
Needham, AL
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, October and November (6mi).
The months with the lowest visibility are January, May, July, August, September and December (5mi).
Needham, Alabama, USA
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