Helena May Weather Averages Montana, United States of America

May Weather Averages for Helena

High Temp	15°C	60°F
Low Temp	3°C	38°F
Avg Temp	10°C	49°F
Sunshine Hours	202 hours
Rainfall	67.94 mm	2.67 In
Rain days	9 days
Pressure	1013 mb	30 In

Helena May Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	14°C / 58°F	3°C / 37°F	9°C / 48°F	187 hours	99.30 mm / 3.91 In	7 days	1014 mb / 30 In
2009	16°C / 61°F	3°C / 37°F	10°C / 49°F	253 hours	27.98 mm / 1.10 In	7 days	1015 mb / 30 In
2010	12°C / 54°F	0°C / 33°F	6°C / 44°F	156 hours	81.56 mm / 3.21 In	14 days	1014 mb / 30 In
2011	12°C / 54°F	1°C / 34°F	7°C / 44°F	179 hours	116.05 mm / 4.57 In	10 days	1012 mb / 30 In
2012	15°C / 60°F	2°C / 36°F	9°C / 48°F	206 hours	60.44 mm / 2.38 In	7 days	1014 mb / 30 In
2013	17°C / 62°F	4°C / 39°F	11°C / 51°F	213 hours	70.23 mm / 2.76 In	8 days	1015 mb / 30 In
2014	17°C / 62°F	3°C / 38°F	10°C / 51°F	248 hours	26.14 mm / 1.03 In	7 days	1014 mb / 30 In
2015	16°C / 61°F	3°C / 38°F	10°C / 50°F	212 hours	60.60 mm / 2.39 In	9 days	1014 mb / 30 In
2016	16°C / 61°F	3°C / 38°F	10°C / 50°F	213 hours	56.94 mm / 2.24 In	7 days	1015 mb / 30 In
2017	18°C / 64°F	4°C / 39°F	11°C / 52°F	270 hours	56.54 mm / 2.23 In	7 days	1013 mb / 30 In
2018	18°C / 65°F	6°C / 43°F	13°C / 55°F	243 hours	64.30 mm / 2.53 In	11 days	1014 mb / 30 In
2019	14°C / 58°F	3°C / 38°F	9°C / 48°F	170 hours	62.80 mm / 2.47 In	9 days	1013 mb / 30 In
2020	15°C / 59°F	4°C / 38°F	10°C / 49°F	182 hours	58.66 mm / 2.31 In	9 days	1014 mb / 30 In
2021	13°C / 56°F	2°C / 36°F	8°C / 47°F	171 hours	123.30 mm / 4.85 In	9 days	1014 mb / 30 In
2022	14°C / 57°F	2°C / 36°F	8°C / 47°F	152 hours	56.69 mm / 2.23 In	5 days	1011 mb / 30 In
2023	20°C / 67°F	7°C / 45°F	13°C / 56°F	192 hours	83.75 mm / 3.30 In	13 days	1012 mb / 30 In
2024	13°C / 55°F	2°C / 36°F	8°C / 46°F	170 hours	81.09 mm / 3.19 In	10 days	1011 mb / 30 In

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