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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a moderately hot 77.2°F (25.1°C) to an agreeable 70.9°F (21.6°C). In September, the temperature drops to an average of 52.9°F (11.6°C) at night.Humidity
In September, the average relative humidity is 79%.Rainfall
In Zilwaukee, during September, the rain falls for 8.6 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 106.2 rainfall days, and 9.96" (253mm) of precipitation is accumulated.Snowfall
In Zilwaukee, snow does not fall in May through October.Daylight
In Zilwaukee, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 7:00 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 7:17 pm EDT.
Sunshine
In September, the average sunshine is 7.9h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, a daily UV index of 3 turns into the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. To avoid the Sun's strongest rays, limit exposure around the mid-day period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September in Zilwaukee?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Zilwaukee have in September?
What is the UV index reading in September?
Average temperature in September
Zilwaukee, MI
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in September
Zilwaukee, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Zilwaukee, MI
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
Zilwaukee, MI
- Average humidity in September: 79%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall in September
Zilwaukee, MI
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.38").
The driest months (with the least rainfall) are February and November (0.47").
Average rainfall days in September
Zilwaukee, MI
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in September
Zilwaukee, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.77").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Zilwaukee, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Zilwaukee, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Zilwaukee, MI
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (14.1 days).
Average UV index in September
Zilwaukee, MI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Zilwaukee, MI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Zilwaukee, 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).
Zilwaukee, Michigan, USA
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