Wisconsin, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and Climate
Oshkosh, WI

  • The average high temperature in September: 72.3°F

The warmest month (with the highest average high temperature) is July (82.7°F).
The month with the lowest average high temperature is January (25.7°F).

  • The average low temperature in September: 51.3°F

The month with the highest average low temperature is July (61.1°F).
The coldest month (with the lowest average low temperature) is January (8.7°F).

  • The average rainfall in September: 3.3"

The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the lowest rainfall) is February (1.1").

  • The average rainfall days in September: 9 days

The month with the highest number of rainy days is May (11 days).
The month with the lowest number of rainy days is February (7 days).

  • The average snowfall in September: 0"

The month with the highest snowfall is January (10.5").
Months with the lowest snowfall are June, July, August and September (0").

  • The average daylight in September: 12h

Months with the longest days are May, June and July (Average daylight: 15h).
Months with shortest days are January and December (Average daylight: 9h).

  • The average sunshine in September: 7h

Months with most sunshine are June and July (Average sunshine: 10h).
Months with least sunshine are November and December (Average sunshine: 4).

  • The average UV index in September: 5

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).