Grayslake September Weather Averages Illinois, United States of America

September Weather Averages for Grayslake

High Temp	23°C	73°F
Low Temp	15°C	58°F
Avg Temp	18°C	65°F
Sunshine Hours	227 hours
Rainfall	76.96 mm	3.03 In
Rain days	6 days
Pressure	1017 mb	31 In

Grayslake September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	22°C / 72°F	15°C / 59°F	18°C / 65°F	212 hours	246.18 mm / 9.69 In	8 days	1018 mb / 31 In
2009	22°C / 71°F	15°C / 58°F	18°C / 64°F	247 hours	40.03 mm / 1.58 In	6 days	1019 mb / 31 In
2010	22°C / 71°F	14°C / 57°F	18°C / 64°F	235 hours	81.66 mm / 3.21 In	6 days	1014 mb / 30 In
2011	19°C / 67°F	13°C / 56°F	16°C / 61°F	193 hours	118.63 mm / 4.67 In	7 days	1015 mb / 30 In
2012	22°C / 71°F	13°C / 55°F	17°C / 63°F	276 hours	39.61 mm / 1.56 In	6 days	1016 mb / 30 In
2013	22°C / 72°F	15°C / 59°F	19°C / 65°F	253 hours	34.37 mm / 1.35 In	4 days	1016 mb / 30 In
2014	21°C / 71°F	13°C / 55°F	17°C / 62°F	233 hours	69.12 mm / 2.72 In	5 days	1018 mb / 31 In
2015	23°C / 74°F	16°C / 60°F	19°C / 67°F	211 hours	85.74 mm / 3.38 In	6 days	1018 mb / 31 In
2016	23°C / 74°F	16°C / 62°F	20°C / 67°F	211 hours	70.68 mm / 2.78 In	8 days	1017 mb / 31 In
2017	24°C / 75°F	16°C / 61°F	20°C / 68°F	310 hours	26.00 mm / 1.02 In	6 days	1017 mb / 31 In
2018	23°C / 74°F	16°C / 61°F	19°C / 67°F	215 hours	117.15 mm / 4.61 In	9 days	1019 mb / 31 In
2019	23°C / 74°F	17°C / 62°F	20°C / 68°F	170 hours	166.16 mm / 6.54 In	10 days	1016 mb / 30 In
2020	21°C / 69°F	14°C / 57°F	17°C / 63°F	225 hours	131.33 mm / 5.17 In	7 days	1017 mb / 31 In
2021	25°C / 77°F	16°C / 61°F	20°C / 68°F	242 hours	46.60 mm / 1.83 In	5 days	1014 mb / 30 In
2022	23°C / 74°F	14°C / 58°F	18°C / 65°F	214 hours	78.10 mm / 3.07 In	5 days	1017 mb / 31 In
2023	26°C / 78°F	14°C / 56°F	19°C / 67°F	180 hours	119.24 mm / 4.69 In	5 days	1017 mb / 31 In
2024	24°C / 76°F	14°C / 58°F	19°C / 66°F	223 hours	6.87 mm / 0.27 In	1 days	1017 mb / 31 In

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