September weather forecastGrove Park, AL
September
Weather in September
September, the first month of the autumn in Grove Park, is still a warm month, with temperature in the range of an average low of 66°F (18.9°C) and an average high of 85.1°F (29.5°C).Temperature
The unfolding of September shows an average high-temperature of a moderately hot 85.1°F (29.5°C), indicating a slight variance from August's 90.1°F (32.3°C). Nighttime temperatures in September average to an enjoyable 66°F (18.9°C).Heat index
The average heat index in September is calculated to be a hot 93.2°F (34°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.Observations indicate that the heat index values are for shady locations with light wind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
In September, the average relative humidity is 72%.Rainfall
In Grove Park, during September, the rain falls for 11.8 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 146.7 rainfall days, and 18.94" (481mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September in Grove Park is 12h and 22min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:10 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:30 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
In Grove Park, Alabama, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grove Park, AL
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in September: 66°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in September
Grove Park, 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
Grove Park, AL
- Average wind speed in September: 4.9mph
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
Grove Park, 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 (70%).
Average rainfall in September
Grove Park, AL
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.02").
Average rainfall days in September
Grove Park, AL
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (7.3 days).
Average snowfall in September
Grove Park, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Grove Park, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Grove Park, 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 54min
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
Grove Park, AL
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in September
Grove Park, AL
- Average UV index in September: 5
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
Grove Park, AL
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, September and October (Cloud cover 30).
Average visibility in September
Grove Park, 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).
