September weather forecastLancaster, WI
September
Weather in September
September, the first month of the autumn in Lancaster, is also an agreeable month, with an average temperature ranging between max 72°F (22.2°C) and min 52.7°F (11.5°C).Temperature
In Lancaster, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 78.6°F (25.9°C) to an agreeable 72°F (22.2°C). In Lancaster, the nighttime temperature averages to a cool 52.7°F (11.5°C) during September.Humidity
In Lancaster, the average relative humidity in September is 80%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 2.6" (66mm) of precipitation is accumulated. In Lancaster, during the entire year, the rain falls for 134.2 days and collects up to 27.32" (694mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 29min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:36 pm. On the last day of September, sunrise is at 6:59 am and sunset at 6:45 pm CDT.
Sunshine
In September, the average sunshine is 9h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lancaster, WI
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in September
Lancaster, WI
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Lancaster, WI
- Average wind speed in September: 7.5mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in September
Lancaster, WI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Lancaster, WI
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
Lancaster, WI
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (18.5 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in September
Lancaster, WI
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lancaster, WI
- 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 May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lancaster, WI
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Lancaster, WI
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (10 days).
Average UV index in September
Lancaster, WI
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Lancaster, WI
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Lancaster, WI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
