September weather forecastValleyhaven, AL
September
Weather in September
The first month of the autumn, September, is still a warm month in Valleyhaven, Alabama, with an average temperature fluctuating between 84.6°F (29.2°C) and 64.8°F (18.2°C).Temperature
September's onset records a minor alteration in the average high-temperature to a moderately hot 84.6°F (29.2°C) from August's 89.2°F (31.8°C). Throughout September nights, Valleyhaven experiences a consistent temperature average of 64.8°F (18.2°C).Heat index
The heat index value during September is calculated to be a hot 93.2°F (34°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Heat index determinations are made taking into account the shade and light air movements. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. 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 extremely significant for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
In Valleyhaven, the average relative humidity in September is 73%.Rainfall
In September, the rain falls for 13.3 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. In Valleyhaven, during the entire year, the rain falls for 158.4 days and collects up to 29.76" (756mm) of precipitation.Snowfall
In Valleyhaven, snow does not fall in March through October.Daylight
In September, the average length of the day in Valleyhaven is 12h and 22min.On the first day of September, sunrise is at 6:20 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:31 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Valleyhaven, AL
- Average high temperature in September: 84.6°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 (50.7°F).
- Average low temperature in September: 64.8°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in September
Valleyhaven, AL
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Valleyhaven, AL
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in September
Valleyhaven, AL
- Average humidity in September: 73%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Valleyhaven, AL
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is August (2.99").
The driest month (with the least rainfall) is October (1.57").
Average rainfall days in September
Valleyhaven, AL
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in September
Valleyhaven, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.63").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Valleyhaven, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Valleyhaven, AL
- Average daylight in September: 12h and 24min
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: 8h and 36min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Valleyhaven, AL
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in September
Valleyhaven, AL
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Valleyhaven, AL
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and October (Cloud cover 31).
Average visibility in September
Valleyhaven, 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).
