September weather forecastHatley, WI
September
Weather in September
September, the first month of the autumn in Hatley, is also an agreeable month, with an average temperature varying between 49.6°F (9.8°C) and 68.2°F (20.1°C).Temperature
Transitioning from August to September involves a subtle drop in average high-temperatures, descending from a warm 75.6°F (24.2°C) to a pleasant 68.2°F (20.1°C). Hatley anticipates an average minimum temperature of 49.6°F (9.8°C) in the month of September.Humidity
The average relative humidity in September is 80%.Rainfall
In Hatley, in September, it is raining for 9.2 days, with typically 0.75" (19mm) of accumulated precipitation. In Hatley, during the entire year, the rain falls for 103 days and collects up to 11.02" (280mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:39 pm CDT.
Sunshine
In September, the average sunshine in Hatley is 8.1h.UV index
The average daily maximum UV index in September in Hatley is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 3 during September translates into these guidelines:
Guard yourself - Precautionary measures against sun damage are advocated. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Hatley, WI
- Average high temperature in September: 68.2°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in September: 49.6°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 (8.2°F).
Average pressure in September
Hatley, WI
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Hatley, WI
- Average wind speed in September: 7.7mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Hatley, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Hatley, WI
- Average rainfall in September: 0.75"
The wettest months (with the highest rainfall) are May and June (1.46").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in September
Hatley, WI
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in September
Hatley, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hatley, WI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hatley, WI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in September
Hatley, WI
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is April (13.4 days).
Average UV index in September
Hatley, 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, February and December (UV index 1).
Average cloud cover in September
Hatley, WI
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Hatley, 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).
