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
The commencement of September introduces an average high-temperature of a still hot 86°F (30°C), closely mirroring the preceding month. September's average low-temperature reading in Caledonia settles at a refreshing 65.7°F (18.7°C).Heat index
During September, the heat index is computed to be a torrid 95°F (35°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
In Caledonia, the average relative humidity in September is 71%.Rainfall
In Caledonia, in September, during 13.6 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Caledonia, during the entire year, the rain falls for 171.9 days and collects up to 43.23" (1098mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:27 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 6:38 pm CDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
In Caledonia, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How much does it rain in Caledonia in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September in Caledonia?
How long on average sun shines in September?
What is the UV index intensity in September in Caledonia?
Average temperature in September
Caledonia, MS
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
Caledonia, MS
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Caledonia, MS
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in September
Caledonia, MS
- 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
Caledonia, MS
- Average rainfall in September: 2.8"
The wettest month (with the highest rainfall) is April (4.65").
The driest month (with the least rainfall) is November (2.32").
Average rainfall days in September
Caledonia, MS
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in September
Caledonia, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Caledonia, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Caledonia, MS
- Average daylight in September: 12h and 2min
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: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Caledonia, MS
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in September
Caledonia, MS
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Caledonia, MS
- Average cloud cover in September: 27
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 27).
Average visibility in September
Caledonia, MS
- 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).
Caledonia, Mississippi, USA
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