Dennis September Weather Averages Massachusetts, United States of America

September Weather Averages for Dennis

High Temp	20°C	69°F
Low Temp	17°C	63°F
Avg Temp	19°C	66°F
Sunshine Hours	224 hours
Rainfall	117.81 mm	4.64 In
Rain days	6 days
Pressure	1018 mb	31 In

Dennis September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	19°C / 66°F	17°C / 62°F	18°C / 65°F	234 hours	225.10 mm / 8.86 In	8 days	1019 mb / 31 In
2009	19°C / 66°F	16°C / 61°F	18°C / 64°F	265 hours	61.02 mm / 2.40 In	4 days	1018 mb / 31 In
2010	20°C / 68°F	17°C / 63°F	19°C / 66°F	260 hours	77.18 mm / 3.04 In	5 days	1014 mb / 30 In
2011	19°C / 67°F	17°C / 63°F	18°C / 65°F	229 hours	91.90 mm / 3.62 In	7 days	1017 mb / 31 In
2012	20°C / 68°F	18°C / 64°F	19°C / 66°F	239 hours	135.92 mm / 5.35 In	10 days	1016 mb / 30 In
2013	19°C / 66°F	16°C / 61°F	17°C / 63°F	260 hours	28.83 mm / 1.13 In	5 days	1015 mb / 30 In
2014	20°C / 68°F	17°C / 63°F	18°C / 65°F	291 hours	35.62 mm / 1.40 In	2 days	1019 mb / 31 In
2015	21°C / 70°F	18°C / 65°F	20°C / 67°F	220 hours	84.03 mm / 3.31 In	4 days	1018 mb / 31 In
2016	21°C / 69°F	18°C / 65°F	20°C / 67°F	218 hours	103.90 mm / 4.09 In	6 days	1019 mb / 31 In
2017	20°C / 67°F	17°C / 63°F	19°C / 65°F	214 hours	120.50 mm / 4.74 In	9 days	1016 mb / 30 In
2018	21°C / 69°F	18°C / 65°F	19°C / 67°F	188 hours	146.70 mm / 5.78 In	10 days	1022 mb / 31 In
2019	20°C / 67°F	17°C / 63°F	18°C / 65°F	256 hours	90.08 mm / 3.55 In	5 days	1019 mb / 31 In
2020	21°C / 70°F	16°C / 62°F	19°C / 66°F	198 hours	47.91 mm / 1.89 In	6 days	1019 mb / 31 In
2021	22°C / 72°F	18°C / 64°F	20°C / 68°F	175 hours	167.26 mm / 6.59 In	11 days	1016 mb / 30 In
2022	22°C / 71°F	16°C / 62°F	19°C / 66°F	221 hours	65.70 mm / 2.59 In	4 days	1016 mb / 30 In
2023	23°C / 73°F	17°C / 62°F	19°C / 67°F	175 hours	263.10 mm / 10.36 In	6 days	1018 mb / 31 In
2024	20°C / 67°F	16°C / 61°F	18°C / 64°F	175 hours	365.33 mm / 14.38 In	4 days	1020 mb / 31 In

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