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
Portage's September weather shows a modest shift in high-temperatures, falling from August's moderately hot 77.7°F (25.4°C) to an agreeable 71.1°F (21.7°C). Portage records an average low-temperature of 51.3°F (10.7°C) throughout the month of September.Humidity
The average relative humidity in September in Portage is 80%.Rainfall
In Portage, in September, during 12.1 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Portage, during the entire year, the rain falls for 128.9 days and collects up to 27.68" (703mm) of precipitation.Snowfall
In Portage, snow does not fall in June through September.Daylight
In Portage, Wisconsin, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:22 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:40 pm CDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In Portage, Wisconsin, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: An average UV index of 3 in September transforms into this advice:
Adopt protective measures - Suggestions to resist sunburn are offered. When the Sun is at its strongest around midday, find shade and limit exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Portage?
What is the average humidity in September in Portage?
How many days does it rain in September in Portage?
When it does not snow in Portage?
Does it snow in Portage in September?
How many hours of daylight does Portage have in September?
What time are sunrise and sunset in September in Portage?
How long on average sun shines in September in Portage?
What is the UV index reading in September in Portage?
Average temperature in September
Portage, WI
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in September
Portage, WI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Portage, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Portage, WI
- Average humidity in September: 80%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Portage, WI
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is June (3.82").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
Portage, WI
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Portage, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Portage, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Portage, WI
- 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: 8h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Portage, WI
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in September
Portage, WI
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Portage, WI
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Portage, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
Portage, Wisconsin, USA
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