Waltham May Weather Averages Massachusetts, United States of America

May Weather Averages for Waltham

High Temp	19°C	67°F
Low Temp	10°C	50°F
Avg Temp	15°C	58°F
Sunshine Hours	186 hours
Rainfall	71.79 mm	2.83 In
Rain days	7 days
Pressure	1016 mb	30 In

Waltham May Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	17°C / 63°F	8°C / 47°F	13°C / 55°F	182 hours	43.24 mm / 1.70 In	5 days	1010 mb / 30 In
2009	18°C / 65°F	10°C / 50°F	14°C / 57°F	196 hours	80.00 mm / 3.15 In	11 days	1017 mb / 31 In
2010	21°C / 70°F	11°C / 52°F	16°C / 61°F	272 hours	48.50 mm / 1.91 In	4 days	1015 mb / 30 In
2011	18°C / 65°F	10°C / 50°F	14°C / 57°F	147 hours	93.80 mm / 3.69 In	9 days	1016 mb / 30 In
2012	20°C / 68°F	12°C / 53°F	16°C / 60°F	155 hours	82.27 mm / 3.24 In	7 days	1017 mb / 31 In
2013	20°C / 67°F	9°C / 48°F	14°C / 58°F	214 hours	94.80 mm / 3.73 In	9 days	1018 mb / 31 In
2014	19°C / 66°F	9°C / 48°F	14°C / 57°F	180 hours	59.52 mm / 2.34 In	8 days	1016 mb / 30 In
2015	23°C / 73°F	11°C / 51°F	17°C / 62°F	260 hours	38.90 mm / 1.53 In	3 days	1020 mb / 31 In
2016	18°C / 65°F	9°C / 49°F	14°C / 57°F	154 hours	63.70 mm / 2.51 In	9 days	1015 mb / 30 In
2017	17°C / 63°F	9°C / 48°F	13°C / 55°F	122 hours	114.36 mm / 4.50 In	9 days	1013 mb / 30 In
2018	22°C / 72°F	12°C / 54°F	17°C / 63°F	236 hours	70.27 mm / 2.77 In	7 days	1017 mb / 31 In
2019	18°C / 64°F	9°C / 49°F	14°C / 56°F	145 hours	86.40 mm / 3.40 In	11 days	1015 mb / 30 In
2020	18°C / 65°F	9°C / 48°F	13°C / 56°F	175 hours	43.00 mm / 1.69 In	2 days	1015 mb / 30 In
2021	19°C / 66°F	10°C / 50°F	14°C / 58°F	118 hours	99.90 mm / 3.93 In	6 days	1017 mb / 31 In
2022	21°C / 70°F	11°C / 51°F	16°C / 60°F	208 hours	38.30 mm / 1.51 In	5 days	1018 mb / 31 In
2023	21°C / 69°F	8°C / 47°F	14°C / 58°F	262 hours	80.00 mm / 3.15 In	5 days	1016 mb / 30 In
2024	20°C / 68°F	11°C / 51°F	15°C / 59°F	125 hours	54.92 mm / 2.16 In	4 days	1014 mb / 30 In

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