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
September signifies a gentle decline in Calvin's average high-temperature, easing from 94.1°F (34.5°C) in August to a still hot 88.3°F (31.3°C). September in Calvin sees the temperature falling to a mean low of 67.8°F (19.9°C).Heat index
September's heat index is appraised at a very hot 102.2°F (39°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.The heat index's values are generally associated with conditions in shade and light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', comes about by integrating the temperature readings with the humidity levels. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.
Humidity
The average relative humidity in September in Calvin is 73%.Rainfall
In September, in Calvin, the rain falls for 12.1 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. In Calvin, during the entire year, the rain falls for 130.3 days and collects up to 16.42" (417mm) of precipitation.Snowfall
April through November are months without snowfall in Calvin.Daylight
The average length of the day in September in Calvin is 12h and 21min.On the first day of September in Calvin, sunrise is at 6:46 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:56 pm CDT.
Sunshine
In September, the average sunshine in Calvin is 9.3h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 6 during September translates into the following directions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
How hot is it in Calvin in September?
What is the average humidity in September in Calvin?
How many days does it rain in September in Calvin?
When it does not snow in Calvin?
What is the average length of the day in September in Calvin?
What time are sunrise and sunset in September in Calvin?
How many hours of sunshine does Calvin have in September?
What is the UV index intensity in September in Calvin?
Average temperature in September
Calvin, LA
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is January (55.2°F).
- Average low temperature in September: 67.8°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (39.6°F).
Average pressure in September
Calvin, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Calvin, LA
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in September
Calvin, LA
- Average humidity in September: 73%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Calvin, LA
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is August (1.85").
The driest month (with the least rainfall) is November (0.94").
Average rainfall days in September
Calvin, LA
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is August (14.6 days).
The month with the least rainy days is November (6.6 days).
Average snowfall in September
Calvin, LA
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Calvin, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 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
Calvin, LA
- 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 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Calvin, LA
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is August (13.2 days).
Average UV index in September
Calvin, LA
- Average UV index in September: 6
The months with the highest UV index are 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
Calvin, LA
- Average cloud cover in September: 32
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Calvin, LA
- Average visibility in September: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Calvin, Louisiana, USA
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