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 minor drop in average high-temperature, transitioning from a warm 84.9°F (29.4°C) in August to a still moderately hot 79.2°F (26.2°C). During September, Portage Des Sioux's temperature averages to a refreshing 59.7°F (15.4°C) at night.Humidity
In Portage Des Sioux, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 11.6 days. Throughout September, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 138.8 rainfall days, and 27.6" (701mm) of precipitation is accumulated.Snowfall
In Portage Des Sioux, snow does not fall in April through October.Daylight
In Portage Des Sioux, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:31 pm. On the last day of September, sunrise is at 6:57 am and sunset at 6:45 pm CDT.
Sunshine
In Portage Des Sioux, the average sunshine in September is 9.4h.UV index
The average daily maximum UV index in September in Portage Des Sioux is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during September leads to these advisories:
Undertake protective steps - Recommendations to avoid sunburn are issued. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow in Portage Des Sioux?
What is the average length of the day in September in Portage Des Sioux?
When are sunrise and sunset in September?
How many hours of sunshine does Portage Des Sioux have in September?
What is the UV index intensity in September?
Average temperature in September
Portage Des Sioux, MO
- Average high temperature in September: 79.2°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in September: 59.7°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Portage Des Sioux, MO
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Portage Des Sioux, MO
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Portage Des Sioux, MO
- Average humidity in September: 74%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Portage Des Sioux, MO
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.35").
The driest month (with the least rainfall) is February (1.3").
Average rainfall days in September
Portage Des Sioux, MO
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Portage Des Sioux, MO
- Average snowfall in September: 0"
The months with the highest snowfall are January and February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Portage Des Sioux, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Portage Des Sioux, MO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in September
Portage Des Sioux, MO
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is December (19.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in September
Portage Des Sioux, MO
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Portage Des Sioux, MO
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Portage Des Sioux, MO
- 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).
Portage Des Sioux, Missouri, USA
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