Issaquah September Weather Averages Washington, United States of America

September Weather Averages for Issaquah

High Temp	22°C	71°F
Low Temp	11°C	51°F
Avg Temp	16°C	60°F
Sunshine Hours	204 hours
Rainfall	79.61 mm	3.13 In
Rain days	6 days
Pressure	1016 mb	30 In

Issaquah September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	22°C / 72°F	9°C / 49°F	15°C / 59°F	294 hours	36.20 mm / 1.43 In	4 days	1018 mb / 31 In
2009	22°C / 72°F	11°C / 51°F	16°C / 60°F	260 hours	79.20 mm / 3.12 In	5 days	1017 mb / 31 In
2010	20°C / 68°F	11°C / 51°F	15°C / 59°F	149 hours	124.58 mm / 4.90 In	12 days	1015 mb / 30 In
2011	24°C / 75°F	11°C / 52°F	17°C / 62°F	272 hours	46.70 mm / 1.84 In	5 days	1017 mb / 31 In
2012	23°C / 74°F	10°C / 49°F	16°C / 60°F	307 hours	9.20 mm / 0.36 In	1 days	1019 mb / 31 In
2013	21°C / 70°F	11°C / 52°F	16°C / 60°F	205 hours	191.08 mm / 7.52 In	10 days	1012 mb / 30 In
2014	23°C / 73°F	11°C / 52°F	16°C / 61°F	244 hours	67.30 mm / 2.65 In	5 days	1015 mb / 30 In
2015	20°C / 68°F	9°C / 49°F	14°C / 57°F	183 hours	50.60 mm / 1.99 In	8 days	1016 mb / 30 In
2016	20°C / 68°F	9°C / 48°F	14°C / 57°F	199 hours	73.50 mm / 2.89 In	5 days	1018 mb / 31 In
2017	23°C / 74°F	12°C / 54°F	17°C / 62°F	223 hours	73.30 mm / 2.89 In	7 days	1015 mb / 30 In
2018	21°C / 69°F	10°C / 51°F	15°C / 59°F	195 hours	59.70 mm / 2.35 In	4 days	1016 mb / 30 In
2019	20°C / 68°F	11°C / 52°F	15°C / 59°F	106 hours	141.00 mm / 5.55 In	11 days	1015 mb / 30 In
2020	25°C / 76°F	13°C / 55°F	19°C / 66°F	218 hours	111.41 mm / 4.39 In	6 days	1016 mb / 30 In
2021	21°C / 70°F	10°C / 50°F	15°C / 60°F	161 hours	111.90 mm / 4.41 In	9 days	1016 mb / 30 In
2022	25°C / 77°F	11°C / 52°F	17°C / 63°F	231 hours	7.90 mm / 0.31 In	0 days	1015 mb / 30 In
2023	22°C / 71°F	9°C / 47°F	15°C / 58°F	173 hours	82.92 mm / 3.26 In	5 days	1016 mb / 30 In
2024	21°C / 70°F	11°C / 52°F	16°C / 60°F	138 hours	43.49 mm / 1.71 In	3 days	1016 mb / 30 In

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