Crystal Lake September Weather Averages Illinois, United States of America

September Weather Averages for Crystal Lake

High Temp	23°C	73°F
Low Temp	14°C	56°F
Avg Temp	18°C	64°F
Sunshine Hours	223 hours
Rainfall	76.46 mm	3.01 In
Rain days	6 days
Pressure	1017 mb	31 In

Crystal Lake September Averages Year by Year

Year	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
2008	22°C / 72°F	14°C / 57°F	18°C / 64°F	213 hours	244.50 mm / 9.63 In	8 days	1018 mb / 31 In
2009	22°C / 72°F	13°C / 55°F	17°C / 63°F	235 hours	40.84 mm / 1.61 In	6 days	1019 mb / 31 In
2010	22°C / 71°F	13°C / 55°F	17°C / 63°F	228 hours	69.90 mm / 2.75 In	7 days	1015 mb / 30 In
2011	19°C / 67°F	12°C / 53°F	15°C / 60°F	190 hours	109.27 mm / 4.30 In	7 days	1015 mb / 30 In
2012	22°C / 71°F	12°C / 53°F	16°C / 61°F	258 hours	38.00 mm / 1.50 In	6 days	1016 mb / 30 In
2013	23°C / 73°F	13°C / 56°F	18°C / 64°F	260 hours	28.24 mm / 1.11 In	4 days	1016 mb / 30 In
2014	22°C / 71°F	12°C / 53°F	16°C / 61°F	238 hours	69.33 mm / 2.73 In	6 days	1018 mb / 31 In
2015	24°C / 76°F	15°C / 59°F	19°C / 66°F	206 hours	89.41 mm / 3.52 In	7 days	1017 mb / 31 In
2016	24°C / 74°F	16°C / 60°F	19°C / 67°F	202 hours	71.23 mm / 2.80 In	7 days	1017 mb / 31 In
2017	24°C / 76°F	15°C / 58°F	19°C / 66°F	306 hours	29.70 mm / 1.17 In	5 days	1017 mb / 31 In
2018	23°C / 74°F	15°C / 59°F	19°C / 66°F	198 hours	120.93 mm / 4.76 In	9 days	1019 mb / 31 In
2019	23°C / 74°F	16°C / 61°F	19°C / 67°F	168 hours	171.35 mm / 6.75 In	10 days	1016 mb / 30 In
2020	21°C / 69°F	12°C / 54°F	16°C / 61°F	214 hours	124.22 mm / 4.89 In	7 days	1017 mb / 31 In
2021	26°C / 79°F	15°C / 59°F	20°C / 68°F	243 hours	47.90 mm / 1.89 In	5 days	1014 mb / 30 In
2022	23°C / 74°F	13°C / 56°F	18°C / 64°F	219 hours	85.60 mm / 3.37 In	4 days	1017 mb / 31 In
2023	26°C / 80°F	13°C / 55°F	19°C / 66°F	178 hours	118.62 mm / 4.67 In	4 days	1017 mb / 31 In
2024	25°C / 76°F	14°C / 56°F	19°C / 65°F	229 hours	8.88 mm / 0.35 In	1 days	1017 mb / 31 In

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