Lake Forest September Weather Averages Illinois, United States of America

September Weather Averages for Lake Forest

High Temp22°C72°F
Low Temp16°C61°F
Avg Temp19°C66°F
Sunshine Hours233 hours 
Rainfall86.29 mm3.40 In
Rain days6 days 
Pressure1017 mb31 In

 

Lake Forest September Averages Year by Year

YearHigh TempLow TempAvg TempSunshine HoursRainfallRain daysPressure
200822°C / 71°F16°C / 61°F19°C / 66°F227 hours264.10 mm / 10.40 In8 days1018 mb / 31 In
200921°C / 70°F16°C / 61°F18°C / 65°F241 hours36.34 mm / 1.43 In4 days1019 mb / 31 In
201021°C / 70°F15°C / 59°F18°C / 64°F233 hours98.16 mm / 3.86 In6 days1015 mb / 30 In
201119°C / 66°F14°C / 58°F17°C / 62°F203 hours115.37 mm / 4.54 In9 days1015 mb / 30 In
201221°C / 70°F14°C / 58°F18°C / 64°F280 hours45.21 mm / 1.78 In5 days1016 mb / 30 In
201322°C / 71°F16°C / 61°F19°C / 66°F256 hours58.53 mm / 2.30 In5 days1016 mb / 30 In
201421°C / 69°F14°C / 57°F17°C / 63°F244 hours96.37 mm / 3.79 In6 days1018 mb / 31 In
201523°C / 73°F16°C / 62°F19°C / 67°F211 hours96.65 mm / 3.81 In5 days1018 mb / 31 In
201623°C / 73°F17°C / 63°F20°C / 68°F220 hours97.47 mm / 3.84 In9 days1017 mb / 31 In
201723°C / 74°F17°C / 63°F20°C / 69°F312 hours32.60 mm / 1.28 In4 days1017 mb / 31 In
201823°C / 73°F17°C / 63°F20°C / 68°F235 hours134.72 mm / 5.30 In9 days1019 mb / 31 In
201923°C / 73°F18°C / 64°F20°C / 69°F186 hours185.41 mm / 7.30 In12 days1016 mb / 30 In
202021°C / 70°F16°C / 60°F18°C / 65°F226 hours134.42 mm / 5.29 In6 days1018 mb / 31 In
202124°C / 76°F18°C / 64°F21°C / 70°F264 hours42.00 mm / 1.65 In6 days1014 mb / 30 In
202223°C / 73°F16°C / 61°F19°C / 67°F224 hours66.60 mm / 2.62 In5 days1017 mb / 30 In
202324°C / 75°F17°C / 62°F20°C / 68°F174 hours129.70 mm / 5.11 In4 days1017 mb / 31 In
202424°C / 75°F17°C / 63°F20°C / 69°F217 hours11.10 mm / 0.44 In1 days1017 mb / 31 In
Illinois

 

Hotels Near Lake Forest

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