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Grayslake High School, IL 14 Day Weather
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Grayslake High School, IL Weather Forecast
Grayslake High School, IL Weather Forecast Dated: 345 PM Tue Aug 18 2026 (Grayslake High School Time)
Tue, 18th Lo: 17°C62°F Hi: 31°C87°F |
Overcast Tuesday, temperatures as high as 87°F31°C, low temperature around 62°F17°C, chance of rain 42%, wind out of the WSW 12 mph20 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi10 km, humidity 73%. |
Wed, 19th Lo: 19°C66°F Hi: 25°C77°F |
Chance of showers Wednesday, temperatures as high as 77°F25°C, low temperature around 66°F19°C, chance of rain 85%, wind out of the N 7 mph11 km/h. Barometric pressure 29.91 in1013 mb, visibility 5 mi8 km, humidity 83%. |
Thu, 20th Lo: 18°C64°F Hi: 26°C80°F |
Sunny Thursday, temperatures as high as 80°F26°C, low temperature around 64°F18°C, chance of rain 6%, wind out of the WSW 9 mph15 km/h. Barometric pressure 30.03 in1017 mb, visibility 6 mi10 km, humidity 62%. |
| Fri, 21st Lo: 19°C66°F Hi: 25°C77°F |
Overcast Friday, temperatures as high as 77°F25°C, low temperature around 66°F19°C, chance of rain 15%, wind out of the SW 12 mph19 km/h. Barometric pressure 30.03 in1017 mb, visibility 6 mi10 km, humidity 73%. |
| Sat, 22nd Lo: 18°C64°F Hi: 26°C79°F |
Sunny Saturday, temperatures as high as 79°F26°C, low temperature around 64°F18°C, chance of rain 36%, wind out of the NNW 10 mph17 km/h. Barometric pressure 29.94 in1014 mb, visibility 6 mi9 km, humidity 78%. |
| Sun, 23rd Lo: 14°C57°F Hi: 22°C71°F |
Overcast Sunday, temperatures as high as 71°F22°C, low temperature around 57°F14°C, chance of rain 11%, wind out of the NNE 8 mph13 km/h. Barometric pressure 30.09 in1019 mb, visibility 6 mi10 km, humidity 69%. |
| Mon, 24th Lo: 17°C62°F Hi: 21°C69°F |
Overcast Monday, temperatures as high as 69°F21°C, low temperature around 62°F17°C, chance of rain 75%, wind out of the SSW 9 mph15 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi10 km, humidity 76%. |
| Tue, 25th Lo: 18°C64°F Hi: 25°C77°F |
Sunny Tuesday, temperatures as high as 77°F25°C, low temperature around 64°F18°C, chance of rain 36%, wind out of the W 11 mph17 km/h. Barometric pressure 29.83 in1010 mb, visibility 6 mi10 km, humidity 74%. |
| Wed, 26th Lo: 12°C53°F Hi: 17°C63°F |
Sunny Wednesday, temperatures as high as 63°F17°C, low temperature around 53°F12°C, chance of rain 9%, wind out of the N 14 mph22 km/h. Barometric pressure 30 in1016 mb, visibility 6 mi10 km, humidity 66%. |
| Thu, 27th Lo: 9°C49°F Hi: 18°C64°F |
Sunny Thursday, temperatures as high as 64°F18°C, low temperature around 49°F9°C, chance of rain 5%, wind out of the N 12 mph20 km/h. Barometric pressure 30.18 in1022 mb, visibility 6 mi10 km, humidity 58%. |
| Fri, 28th Lo: 11°C52°F Hi: 20°C68°F |
Sunny Friday, temperatures as high as 68°F20°C, low temperature around 52°F11°C, chance of rain 3%, wind out of the NNW 8 mph13 km/h. Barometric pressure 30.24 in1024 mb, visibility 6 mi10 km, humidity 55%. |
| Sat, 29th Lo: 12°C54°F Hi: 22°C71°F |
Sunny Saturday, temperatures as high as 71°F22°C, low temperature around 54°F12°C, chance of rain 5%, wind out of the NW 8 mph13 km/h. Barometric pressure 30.3 in1026 mb, visibility 6 mi10 km, humidity 63%. |
| Sun, 30th Lo: 14°C57°F Hi: 21°C70°F |
Overcast Sunday, temperatures as high as 70°F21°C, low temperature around 57°F14°C, chance of rain 12%, wind out of the NE 9 mph15 km/h. Barometric pressure 30.3 in1026 mb, visibility 6 mi10 km, humidity 60%. |
| Mon, 31st Lo: 15°C58°F Hi: 23°C73°F |
Sunny Monday, temperatures as high as 73°F23°C, low temperature around 58°F15°C, chance of rain 4%, wind out of the NNE 8 mph13 km/h. Barometric pressure 30.33 in1027 mb, visibility 6 mi10 km, humidity 62%. |
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