Weather in September in Watertown, Wi

< September >
	Normal Max/ High Temperature	23°C (73°F)
	Average Temperature	16°C (61°F)
	Min/ Low Temperature	10°C (50°F)
	Normal Precipitation	103mm (4in)
	Average Daylight per day	12h 26'
	Sun altitude at solar noon on the 21st day.	47.5°

• The average temperature in Watertown, Wi in September is very mild at 16.3 °C (61.34 °F).
• Afternoons can be really warm with average high temperatures reaching 22.6 °C (72.7 °F).
• Overnight temperatures are generally quite mild with an average low of 10.1 °C (50.2 °F).
• The mean diurnal temperature range/ variation in September is 12.5 °C (22.5 °F).
• Precipitation averages for September are high with 102.6mm (4 in) recorded.
• The shortest day is 11h 43' long and the longest day is 13h 09' long with an average length of 12h 26'.

Weather Trend Graph for September in Watertown, Wi, Usa