September weather forecastHillsdale, WI
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Hillsdale, Wisconsin, with an average temperature ranging between max 68.9°F (20.5°C) and min 49.6°F (9.8°C).Temperature
With the onset of September, Hillsdale's climate undergoes a slight change as the average high-temperature moves from a warm 76.6°F (24.8°C) in August to an agreeable 68.9°F (20.5°C). Hillsdale reports an average nighttime low-temperature of 49.6°F (9.8°C) in September.Humidity
In Hillsdale, the average relative humidity in September is 80%.Rainfall
In Hillsdale, Wisconsin, in September, during 14 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 134.8 rainfall days, and 25.24" (641mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Hillsdale, Wisconsin, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:44 pm. On the last day of September, in Hillsdale, Wisconsin, sunrise is at 7:05 am and sunset at 6:49 pm CDT.
Sunshine
In Hillsdale, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September in Hillsdale is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hillsdale, WI
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in September: 49.6°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (5.2°F).
Average pressure in September
Hillsdale, WI
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Hillsdale, WI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in September
Hillsdale, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Hillsdale, WI
- Average rainfall in September: 2.09"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in September
Hillsdale, WI
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is June (19.5 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in September
Hillsdale, WI
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hillsdale, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hillsdale, WI
- Average daylight in September: 12h and 30min
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 18min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Hillsdale, WI
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in September
Hillsdale, WI
- 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 and December (UV index 1).
Average cloud cover in September
Hillsdale, WI
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Hillsdale, WI
- Average visibility in September: 5mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
