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 signals a slight drop in average high-temperature, sliding from August's warm 76.6°F (24.8°C) to an agreeable 70.9°F (21.6°C). Saint Joseph, during the nights of September, experiences an average temperature drop to a refreshing 58.6°F (14.8°C).Humidity
In Saint Joseph, the average relative humidity in September is 77%.Rainfall
In Saint Joseph, in September, during 14.6 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, in Saint Joseph, there are 160 rainfall days, and 32.48" (825mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 7:12 am and sunset at 8:19 pm. On the last day of September, in Saint Joseph, sunrise is at 7:42 am and sunset at 7:28 pm EDT.
Sunshine
In Saint Joseph, the average sunshine in September is 8.3h.UV index
In Saint Joseph, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Saint Joseph?
What is the average humidity in September in Saint Joseph?
How many days does it rain in September in Saint Joseph?
When it does not snow in Saint Joseph?
How many hours of daylight does Saint Joseph have in September?
What time are sunrise and sunset in September in Saint Joseph?
How many hours of sunshine does Saint Joseph have in September?
How high is the UV index in September in Saint Joseph?
Average temperature in September
Saint Joseph, MI
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in September
Saint Joseph, MI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January, March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Saint Joseph, MI
- Average wind speed in September: 9.5mph
The windiest month (with the highest average wind speed) is January (13.4mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in September
Saint Joseph, MI
- Average humidity in September: 77%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Saint Joseph, MI
- Average rainfall in September: 2.72"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in September
Saint Joseph, MI
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
Saint Joseph, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.46").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Saint Joseph, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Saint Joseph, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in September
Saint Joseph, MI
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is March (13.8 days).
The month with the least sunshine days is January (8.3 days).
Average UV index in September
Saint Joseph, MI
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Saint Joseph, MI
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in September
Saint Joseph, MI
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Saint Joseph, Michigan, USA
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