September weather forecastFairfield, AL
September
Weather in September
The first month of the autumn, September, is still a warm month in Fairfield, Alabama, with temperature in the range of an average high of 85.5°F (29.7°C) and an average low of 66°F (18.9°C).Temperature
The transition into September shows a subtle variation to a moderately hot 85.5°F (29.7°C) from August's 90.3°F (32.4°C) in the average high-temperature. Fairfield's average low-temperature in the month of September is recorded at a refreshing 66°F (18.9°C).Heat index
September's mean heat index is computed to be a fiery hot 95°F (35°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
In Fairfield, the average relative humidity in September is 71%.Rainfall
In September, the rain falls for 14.3 days. Throughout September, 2.44" (62mm) of precipitation is accumulated. In Fairfield, during the entire year, the rain falls for 172.1 days and collects up to 39.69" (1008mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:12 pm. On the last day of September, sunrise is at 6:41 am and sunset at 6:32 pm CDT.
Sunshine
In September, the average sunshine is 8.9h.UV index
April through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fairfield, AL
- Average high temperature in September: 85.5°F
The warmest month (with the highest average high temperature) is July (91°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 August (71.6°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in September
Fairfield, 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
Fairfield, 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
Fairfield, AL
- Average humidity in September: 71%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Fairfield, AL
- Average rainfall in September: 2.44"
The wettest month (with the highest rainfall) is December (4.13").
The driest month (with the least rainfall) is October (2.24").
Average rainfall days in September
Fairfield, AL
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (8.6 days).
Average snowfall in September
Fairfield, AL
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Fairfield, 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
Fairfield, 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 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Fairfield, AL
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in September
Fairfield, AL
- Average UV index in September: 6
The months with the highest UV index are April, May, June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Fairfield, AL
- Average cloud cover in September: 30
The months with the most cloud cover are February and December (Cloud cover 48).
The months with the least cloud cover are June, September and October (Cloud cover 30).
Average visibility in September
Fairfield, 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).
