Groton May Weather Averages Massachusetts, United States of America

May Weather Averages for Groton

High Temp	20°C	68°F
Low Temp	9°C	48°F
Avg Temp	15°C	58°F
Sunshine Hours	182 hours
Rainfall	79.45 mm	3.13 In
Rain days	8 days
Pressure	1016 mb	30 In

Groton May Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2009	19°C / 66°F	9°C / 49°F	14°C / 57°F	190 hours	80.29 mm / 3.16 In	11 days	1017 mb / 31 In
2010	22°C / 72°F	10°C / 51°F	16°C / 61°F	259 hours	47.99 mm / 1.89 In	5 days	1015 mb / 30 In
2011	19°C / 67°F	10°C / 49°F	14°C / 58°F	142 hours	108.54 mm / 4.27 In	12 days	1016 mb / 30 In
2012	21°C / 70°F	11°C / 52°F	16°C / 60°F	149 hours	95.85 mm / 3.77 In	11 days	1017 mb / 30 In
2013	21°C / 69°F	8°C / 46°F	14°C / 58°F	214 hours	116.81 mm / 4.60 In	10 days	1017 mb / 31 In
2014	20°C / 67°F	8°C / 47°F	14°C / 57°F	158 hours	64.33 mm / 2.53 In	7 days	1016 mb / 30 In
2015	24°C / 75°F	10°C / 50°F	17°C / 63°F	242 hours	39.70 mm / 1.56 In	3 days	1019 mb / 31 In
2016	19°C / 66°F	9°C / 48°F	14°C / 57°F	166 hours	73.88 mm / 2.91 In	9 days	1015 mb / 30 In
2017	18°C / 64°F	8°C / 46°F	13°C / 55°F	110 hours	122.42 mm / 4.82 In	10 days	1013 mb / 30 In
2018	23°C / 73°F	10°C / 50°F	16°C / 61°F	222 hours	73.67 mm / 2.90 In	6 days	1017 mb / 31 In
2019	18°C / 65°F	8°C / 46°F	13°C / 55°F	151 hours	80.85 mm / 3.18 In	11 days	1015 mb / 30 In
2020	18°C / 65°F	8°C / 46°F	13°C / 56°F	172 hours	59.58 mm / 2.35 In	4 days	1015 mb / 30 In
2021	19°C / 66°F	9°C / 48°F	14°C / 57°F	157 hours	105.46 mm / 4.15 In	8 days	1017 mb / 31 In
2022	22°C / 72°F	10°C / 49°F	16°C / 60°F	206 hours	38.00 mm / 1.50 In	5 days	1018 mb / 31 In
2023	21°C / 69°F	7°C / 45°F	14°C / 57°F	255 hours	104.65 mm / 4.12 In	6 days	1016 mb / 30 In
2024	20°C / 69°F	10°C / 49°F	15°C / 58°F	117 hours	59.16 mm / 2.33 In	4 days	1014 mb / 30 In
2025	17°C / 63°F	10°C / 51°F	14°C / 56°F	88 hours	492.61 mm / 19.39 In	9 days	1014 mb / 30 In

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