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
In September, Grimes notes an average high-temperature of a still hot 86.9°F (30.5°C), hardly different from the preceding month. In September, the recorded average low-temperature in Grimes is an agreeable 69.6°F (20.9°C).Heat index
The heat index in September is estimated at a fiery hot 98.6°F (37°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.Metrics for the heat index primarily focus on shaded spots and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
In September, the average relative humidity is 73%.Rainfall
In Grimes, in September, during 13.7 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, in Grimes, there are 151.6 rainfall days, and 23.27" (591mm) of precipitation is accumulated.Snowfall
In Grimes, snow does not fall in April through December.Daylight
In Grimes, the average length of the day in September is 12h and 21min.On the first day of September in Grimes, sunrise is at 6:18 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 6:35 am and sunset at 6:27 pm CDT.
Sunshine
In Grimes, the average sunshine in September is 8.8h.UV index
In Grimes, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
Is it hot in Grimes during September?
What is the average humidity in September in Grimes?
How much does it rain in Grimes in September?
When it does not snow in Grimes?
How many hours of daylight does Grimes have in September?
When is the sunrise / sunset in September in Grimes?
How many hours of sunshine does Grimes have in September?
What is the UV index intensity in September in Grimes?
Average temperature in September
Grimes, AL
- Average high temperature in September: 86.9°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 (57.7°F).
- Average low temperature in September: 69.6°F
The months with the highest average low temperature are July and August (73.6°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in September
Grimes, AL
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Grimes, AL
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
Grimes, AL
- Average humidity in September: 73%
The months with the highest relative humidity are August and December (75%).
The months with the lowest relative humidity are May and October (69%).
Average rainfall in September
Grimes, AL
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is November (1.22").
Average rainfall days in September
Grimes, AL
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is August (20.7 days).
The month with the least rainy days is November (7.2 days).
Average snowfall in September
Grimes, AL
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.16").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Grimes, AL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Grimes, 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 12min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in September
Grimes, AL
- Average sunshine days in September: 13.4 days
The months with the most sunshine days are October and November (21.1 days).
The month with the least sunshine days is August (7.2 days).
Average UV index in September
Grimes, AL
- Average UV index in September: 6
The months with the highest UV index are May, 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
Grimes, AL
- Average cloud cover in September: 29
The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 27).
Average visibility in September
Grimes, 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).
Grimes, Alabama, USA
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