September weather forecastCaldwell, AL
September
Weather in September
The first month of the autumn, September, is still a warm month in Caldwell, Alabama, with an average temperature varying between 83.5°F (28.6°C) and 64°F (17.8°C).Temperature
September brings an average high-temperature of a warm 83.5°F (28.6°C), nearly identical to the preceding month. Throughout September, the temperature tends to fall to a consistent average low of 64°F (17.8°C).Heat index
The heat index value during September is evaluated at a tropical 91.4°F (33°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Be advised, the heat index considers values for conditions in shade and with a light breeze. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
The average relative humidity in September in Caldwell, Alabama, is 75%.Rainfall
In Caldwell, during September, the rain falls for 14.6 days and regularly aggregates up to 2.64" (67mm) of precipitation. In Caldwell, during the entire year, the rain falls for 179.3 days and collects up to 43.15" (1096mm) of precipitation.Snowfall
In Caldwell, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 22min.On the first day of the month, sunrise is at 6:19 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 8.6h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Caldwell, AL
- Average high temperature in September: 83.5°F
The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (49.8°F).
- Average low temperature in September: 64°F
The months with the highest average low temperature are July and August (69.4°F).
The coldest month (with the lowest average low temperature) is January (34.5°F).
Average pressure in September
Caldwell, 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
Caldwell, AL
- Average wind speed in September: 4.8mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in September
Caldwell, AL
- Average humidity in September: 75%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Caldwell, AL
- Average rainfall in September: 2.64"
The wettest month (with the highest rainfall) is August (4.41").
The driest month (with the least rainfall) is October (2.36").
Average rainfall days in September
Caldwell, AL
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in September
Caldwell, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Caldwell, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Caldwell, AL
- Average daylight in September: 12h and 24min
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: 8h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Caldwell, AL
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (6.9 days).
Average UV index in September
Caldwell, 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
Caldwell, AL
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June and September (Cloud cover 31).
Average visibility in September
Caldwell, 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).
