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 move into September indicates a slight reduction in the average high-temperature, down from August's warm 78.8°F (26°C) to an agreeable 71.2°F (21.8°C). An average low-temperature of 53.2°F (11.8°C) is common during the nights of September.Humidity
In September, the average relative humidity is 74%.Rainfall
In Saint Paul, in September, during 11.1 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, there are 116.5 rainfall days, and 21.81" (554mm) of precipitation is accumulated.Snowfall
In Saint Paul, Minnesota, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September in Saint Paul, sunrise is at 6:35 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In Saint Paul, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 during September leads to these advisories:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Saint Paul in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in Saint Paul in September?
How many hours of daylight does Saint Paul have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Saint Paul have in September?
How high is the UV index in September?
Average temperature in September
Saint Paul, MN
- Average high temperature in September: 71.2°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (19.9°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in September
Saint Paul, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Saint Paul, MN
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Saint Paul, MN
- Average humidity in September: 74%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Saint Paul, MN
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Saint Paul, MN
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is February (2 days).
Average snowfall in September
Saint Paul, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saint Paul, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Saint Paul, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 4min
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 0min).
Average sunshine days in September
Saint Paul, MN
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Saint Paul, MN
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Saint Paul, MN
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in September
Saint Paul, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Saint Paul, Minnesota, USA
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