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
Winona records an average high-temperature of a still tropical 86°F (30°C) in September, maintaining a close correlation with August's 90.3°F (32.4°C). During September, the temperature is averaged to a low of 66.2°F (19°C) at night.Heat index
September's average heat index is computed to be a torrid 96.8°F (36°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
In September, the average relative humidity is 72%.Rainfall
In Winona, in September, it is raining for 11.5 days, with typically 1.57" (40mm) of accumulated precipitation. In Winona, during the entire year, the rain falls for 143.7 days and collects up to 25.67" (652mm) of precipitation.Snowfall
In Winona, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 22min.On the first day of September, sunrise is at 6:33 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:44 pm CDT.
Sunshine
In Winona, the average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 5 in September translates into this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Winona in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Winona have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Winona have in September?
What is the UV index reading in September?
Average temperature in September
Winona, MS
- Average high temperature in September: 86°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 (51.4°F).
- Average low temperature in September: 66.2°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in September
Winona, 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
Winona, MS
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Winona, MS
- Average humidity in September: 72%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Winona, MS
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is July (2.72").
The driest month (with the least rainfall) is November (1.26").
Average rainfall days in September
Winona, MS
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (7.4 days).
Average snowfall in September
Winona, MS
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Winona, MS
- 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
Winona, MS
- Average daylight in September: 12h and 2min
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: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Winona, MS
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is July (10.6 days).
Average UV index in September
Winona, MS
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Winona, MS
- Average cloud cover in September: 28
The months with the most cloud cover are February and December (Cloud cover 49).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in September
Winona, 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).
Winona, Mississippi, USA
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