Norristown May Weather Averages Pennsylvania, United States of America

May Weather Averages for Norristown

High Temp	22°C	71°F
Low Temp	12°C	54°F
Avg Temp	17°C	63°F
Sunshine Hours	176 hours
Rainfall	109.60 mm	4.31 In
Rain days	9 days
Pressure	1016 mb	30 In

Norristown May Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	20°C / 68°F	9°C / 49°F	15°C / 59°F	200 hours	128.33 mm / 5.05 In	9 days	1011 mb / 30 In
2009	22°C / 71°F	12°C / 54°F	17°C / 62°F	179 hours	125.91 mm / 4.96 In	12 days	1017 mb / 31 In
2010	24°C / 75°F	13°C / 55°F	18°C / 65°F	212 hours	44.60 mm / 1.76 In	6 days	1016 mb / 30 In
2011	22°C / 72°F	13°C / 55°F	18°C / 64°F	188 hours	119.77 mm / 4.72 In	10 days	1015 mb / 30 In
2012	23°C / 74°F	14°C / 57°F	18°C / 65°F	170 hours	112.25 mm / 4.42 In	10 days	1016 mb / 30 In
2013	21°C / 70°F	11°C / 52°F	16°C / 61°F	198 hours	102.21 mm / 4.02 In	7 days	1018 mb / 31 In
2014	21°C / 70°F	11°C / 52°F	16°C / 61°F	176 hours	99.90 mm / 3.93 In	7 days	1016 mb / 30 In
2015	25°C / 76°F	13°C / 56°F	19°C / 66°F	232 hours	40.20 mm / 1.58 In	5 days	1020 mb / 31 In
2016	19°C / 67°F	11°C / 52°F	15°C / 59°F	120 hours	113.66 mm / 4.47 In	10 days	1015 mb / 30 In
2017	19°C / 67°F	11°C / 51°F	15°C / 59°F	153 hours	135.88 mm / 5.35 In	10 days	1013 mb / 30 In
2018	24°C / 76°F	15°C / 59°F	20°C / 67°F	181 hours	161.68 mm / 6.37 In	13 days	1018 mb / 31 In
2019	23°C / 73°F	14°C / 56°F	18°C / 64°F	189 hours	200.83 mm / 7.91 In	14 days	1015 mb / 30 In
2020	19°C / 67°F	11°C / 52°F	15°C / 59°F	156 hours	73.16 mm / 2.88 In	6 days	1016 mb / 30 In
2021	21°C / 69°F	12°C / 53°F	16°C / 61°F	138 hours	127.02 mm / 5.00 In	7 days	1019 mb / 31 In
2022	23°C / 73°F	13°C / 55°F	17°C / 63°F	168 hours	146.90 mm / 5.78 In	10 days	1018 mb / 31 In
2023	22°C / 71°F	10°C / 49°F	16°C / 60°F	239 hours	14.45 mm / 0.57 In	2 days	1017 mb / 31 In
2024	21°C / 71°F	13°C / 56°F	17°C / 63°F	123 hours	135.13 mm / 5.32 In	10 days	1013 mb / 30 In

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