Weather in September in Keene, Nh

< September >
	Normal Max/ High Temperature	23°C (73°F)
	Average Temperature	16°C (61°F)
	Min/ Low Temperature	9°C (48°F)
	Normal Precipitation	76mm (3in)
	Average Daylight per day	12h 26'
	Sun altitude at solar noon on the 21st day.	47.5°

• The average temperature in Keene, Nh in September is very mild at 15.9 °C (60.62 °F).
• Afternoons can be fairly hot with average high temperatures reaching 23 °C (73.4 °F).
• Overnight temperatures are generally a little cool with an average low of 8.8 °C (47.8 °F).
• The range/ variation of diurnal mean temperatures in September is 14.2 °C (25.6 °F).
• Precipitation averages for September are moderate with 76.2mm (3 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 Keene, Nh, Usa