Grand Isle September Weather Averages Maine, United States of America

September Weather Averages for Grand Isle

High Temp	18°C	65°F
Low Temp	8°C	47°F
Avg Temp	13°C	55°F
Sunshine Hours	172 hours
Rainfall	113.14 mm	4.45 In
Rain days	7 days
Pressure	1016 mb	30 In

Grand Isle September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2009	17°C / 63°F	7°C / 45°F	12°C / 54°F	222 hours	84.07 mm / 3.31 In	6 days	1017 mb / 31 In
2010	17°C / 62°F	8°C / 47°F	12°C / 54°F	134 hours	224.45 mm / 8.84 In	13 days	1012 mb / 30 In
2011	19°C / 66°F	8°C / 47°F	13°C / 56°F	217 hours	118.76 mm / 4.68 In	7 days	1016 mb / 30 In
2012	18°C / 64°F	7°C / 45°F	13°C / 55°F	207 hours	70.98 mm / 2.79 In	5 days	1015 mb / 30 In
2013	17°C / 63°F	7°C / 45°F	12°C / 54°F	154 hours	152.18 mm / 5.99 In	10 days	1013 mb / 30 In
2014	17°C / 63°F	7°C / 45°F	12°C / 54°F	168 hours	80.10 mm / 3.15 In	9 days	1016 mb / 30 In
2015	20°C / 67°F	10°C / 49°F	14°C / 58°F	166 hours	149.61 mm / 5.89 In	7 days	1017 mb / 31 In
2016	19°C / 66°F	9°C / 48°F	13°C / 56°F	211 hours	97.03 mm / 3.82 In	8 days	1018 mb / 31 In
2017	21°C / 69°F	10°C / 50°F	15°C / 58°F	177 hours	118.63 mm / 4.67 In	10 days	1015 mb / 30 In
2018	19°C / 66°F	8°C / 46°F	13°C / 56°F	195 hours	65.57 mm / 2.58 In	4 days	1021 mb / 31 In
2019	16°C / 61°F	6°C / 43°F	11°C / 52°F	153 hours	136.83 mm / 5.39 In	8 days	1017 mb / 31 In
2020	17°C / 63°F	7°C / 45°F	13°C / 55°F	149 hours	50.29 mm / 1.98 In	5 days	1017 mb / 31 In
2021	19°C / 65°F	9°C / 48°F	14°C / 56°F	111 hours	152.70 mm / 6.01 In	9 days	1015 mb / 30 In
2022	18°C / 65°F	8°C / 46°F	13°C / 55°F	178 hours	54.80 mm / 2.16 In	7 days	1014 mb / 30 In
2023	21°C / 70°F	9°C / 48°F	15°C / 58°F	169 hours	176.61 mm / 6.95 In	5 days	1018 mb / 31 In
2024	19°C / 66°F	9°C / 49°F	14°C / 57°F	146 hours	77.62 mm / 3.06 In	1 days	1019 mb / 31 In

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