September weather forecastCurtiss, WI
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Curtiss, Wisconsin, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 68.4°F (20.2°C).Temperature
With the onset of September, Curtiss's average high-temperature slightly adjusts, moderately receding from August's warm 75.4°F (24.1°C) to a pleasant 68.4°F (20.2°C). September in Curtiss generally records an average low-temperature of 49.1°F (9.5°C).Humidity
The average relative humidity in September in Curtiss is 81%.Rainfall
In Curtiss, in September, it is raining for 9.3 days, with typically 0.87" (22mm) of accumulated precipitation. In Curtiss, during the entire year, the rain falls for 102.5 days and collects up to 11.18" (284mm) of precipitation.Snowfall
In Curtiss, snow does not fall in June through September.Daylight
The average length of the day in September in Curtiss is 12h and 31min.On the first day of the month, sunrise is at 6:24 am and sunset at 7:38 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:43 pm CDT.
Sunshine
The average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Curtiss, WI
- Average high temperature in September: 68.4°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is January (18.9°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (58.5°F).
The coldest month (with the lowest average low temperature) is January (6.4°F).
Average pressure in September
Curtiss, WI
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Curtiss, WI
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Curtiss, WI
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (92%).
The months with the lowest relative humidity are April and May (78%).
Average rainfall in September
Curtiss, WI
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is June (1.61").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Curtiss, WI
- Average rainfall days in September: 9.3 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (1.5 days).
Average snowfall in September
Curtiss, WI
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Curtiss, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Curtiss, 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 12min
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
Curtiss, WI
- Average sunshine days in September: 18.8 days
The month with the most sunshine days is January (20.1 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in September
Curtiss, WI
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Curtiss, WI
- Average cloud cover in September: 40
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 37).
Average visibility in September
Curtiss, WI
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, March, July, August, September and December (5mi).
