Williamsport September Weather Averages Pennsylvania, United States of America

September Weather Averages for Williamsport

High Temp	23°C	74°F
Low Temp	12°C	54°F
Avg Temp	17°C	63°F
Sunshine Hours	194 hours
Rainfall	130.81 mm	5.15 In
Rain days	7 days
Pressure	1018 mb	31 In

Williamsport September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	24°C / 75°F	12°C / 54°F	18°C / 64°F	231 hours	133.30 mm / 5.25 In	8 days	1019 mb / 31 In
2009	22°C / 71°F	12°C / 53°F	16°C / 61°F	177 hours	73.69 mm / 2.90 In	8 days	1019 mb / 31 In
2010	24°C / 75°F	12°C / 53°F	17°C / 63°F	234 hours	184.41 mm / 7.26 In	6 days	1015 mb / 30 In
2011	22°C / 72°F	13°C / 55°F	17°C / 63°F	144 hours	361.60 mm / 14.24 In	14 days	1016 mb / 30 In
2012	22°C / 72°F	11°C / 52°F	16°C / 62°F	223 hours	131.85 mm / 5.19 In	7 days	1016 mb / 30 In
2013	23°C / 73°F	10°C / 49°F	16°C / 61°F	268 hours	46.20 mm / 1.82 In	5 days	1017 mb / 31 In
2014	23°C / 74°F	11°C / 52°F	17°C / 62°F	220 hours	23.60 mm / 0.93 In	4 days	1019 mb / 31 In
2015	25°C / 76°F	14°C / 56°F	19°C / 65°F	183 hours	135.61 mm / 5.34 In	5 days	1019 mb / 31 In
2016	25°C / 77°F	13°C / 55°F	19°C / 65°F	226 hours	147.30 mm / 5.80 In	7 days	1019 mb / 31 In
2017	24°C / 75°F	13°C / 55°F	18°C / 64°F	242 hours	47.56 mm / 1.87 In	4 days	1018 mb / 31 In
2018	23°C / 73°F	14°C / 58°F	18°C / 65°F	129 hours	209.87 mm / 8.26 In	13 days	1021 mb / 31 In
2019	24°C / 74°F	13°C / 55°F	18°C / 64°F	199 hours	37.87 mm / 1.49 In	5 days	1019 mb / 31 In
2020	23°C / 73°F	12°C / 53°F	17°C / 63°F	175 hours	44.97 mm / 1.77 In	4 days	1019 mb / 31 In
2021	24°C / 74°F	13°C / 55°F	18°C / 64°F	165 hours	230.80 mm / 9.09 In	6 days	1017 mb / 31 In
2022	23°C / 73°F	12°C / 54°F	17°C / 63°F	194 hours	100.70 mm / 3.96 In	8 days	1017 mb / 31 In
2023	24°C / 76°F	11°C / 51°F	17°C / 63°F	166 hours	141.84 mm / 5.58 In	4 days	1019 mb / 31 In
2024	22°C / 72°F	12°C / 54°F	17°C / 63°F	156 hours	175.04 mm / 6.89 In	4 days	1019 mb / 31 In

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