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 sees a slight reduction in average high-temperature, with a shift from a moderately hot 84°F (28.9°C) in August to a still warm 77.9°F (25.5°C). An average low-temperature of 58.1°F (14.5°C) is noted in Saint Joseph, Missouri, during the month of September.Humidity
In September, the average relative humidity in Saint Joseph is 75%.Rainfall
In Saint Joseph, in September, during 12.5 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. In Saint Joseph, during the entire year, the rain falls for 133.5 days and collects up to 27.28" (693mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Saint Joseph is 12h and 26min.On the first day of the month, sunrise is at 6:48 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:15 am and sunset at 7:02 pm CDT.
Sunshine
In September, the average sunshine in Saint Joseph is 9.3h.UV index
In Saint Joseph, Missouri, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the average maximum UV index of 5 translates into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What are the temperatures in Saint Joseph in September?
What is the average humidity in September in Saint Joseph?
How much does it rain in Saint Joseph in September?
When it does not snow in Saint Joseph?
Does it snow in Saint Joseph in September?
What is the average length of the day in September in Saint Joseph?
When is the sunrise / sunset in September in Saint Joseph?
How many hours of sunshine does Saint Joseph have in September?
What is the UV index intensity in September in Saint Joseph?
Average temperature in September
Saint Joseph, MO
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in September
Saint Joseph, MO
- 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 (29.88"Hg).
Average wind speed in September
Saint Joseph, MO
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity in September
Saint Joseph, MO
- Average humidity in September: 75%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Saint Joseph, MO
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in September
Saint Joseph, MO
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Saint Joseph, MO
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saint Joseph, MO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.5 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 Joseph, 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 24min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in September
Saint Joseph, MO
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is December (21.1 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in September
Saint Joseph, MO
- Average UV index in September: 5
The months with the highest UV index are 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
Saint Joseph, MO
- Average cloud cover in September: 29
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Saint Joseph, 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).
Saint Joseph, Missouri, USA
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