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 transition into September marks the average high-temperature at a still moderately hot 73.8°F (23.2°C), differing minimally from August's 78.8°F (26°C). Winona's nights in September experience an average temperature drop to a refreshing 56.3°F (13.5°C).Humidity
The average relative humidity in September in Winona is 79%.Rainfall
In Winona, in September, during 14.9 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, in Winona, there are 175.4 rainfall days, and 34.29" (871mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:13 am and sunset at 7:18 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:29 pm CDT.
Sunshine
In Winona, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index in Winona, Indiana, is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Adopt protective measures - It is advised to guard against sun damage. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
What is the usual temperature for Winona in September?
What is the average humidity in September in Winona?
How much does it rain in Winona in September?
When it does not snow in Winona?
Does it snow in Winona in September?
How many hours of daylight does Winona have in September?
When is the sunrise / sunset in September in Winona?
How many hours of sunshine does Winona have in September?
What is the UV index reading in September in Winona?
Average temperature in September
Winona, IN
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Winona, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Winona, IN
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in September
Winona, IN
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Winona, IN
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in September
Winona, IN
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is May (20.7 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in September
Winona, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Winona, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Winona, IN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Winona, IN
- Average sunshine days in September: 13 days
The month with the most sunshine days is November (14.6 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in September
Winona, IN
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Winona, IN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Winona, IN
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Winona, Indiana, USA
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