Dangerous Heat Continues in the East; Heavy Rain and Flash Flooding in the Southwest, Plains, and Upper Midwest

Prolonged and intense heat wave continues into Friday with relief expected by this weekend. The most significant cumulative heat impacts are anticipated across the Mid-Atlantic through Thursday and eastern Ohio Valley through Friday. Thunderstorms and heavy rain will continue to bring a flash flood threat over portions of the central Plains, Midwest, northern Great Lakes, and the Southwest. Read More >

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National Weather Service Chicago, IL
Weather Impact Matrix for ORD OHare Airport
Valid: 08/05/2023 09 PM - 08/06/2023 07 AM CDT
Call 1-815-834-0651 for additional weather support

	Sat 08/05 9 PM	Sat 08/05 10 PM	Sat 08/05 11 PM	Sun 08/06 12 AM	Sun 08/06 1 AM	Sun 08/06 2 AM	Sun 08/06 3 AM	Sun 08/06 4 AM	Sun 08/06 5 AM	Sun 08/06 6 AM	Sun 08/06 7 AM
Temperature	71°F	70°F	69°F	69°F	68°F	68°F	68°F	67°F	67°F	67°F	67°F
Wind Chill	71°F	70°F	69°F	69°F	68°F	68°F	68°F	67°F	67°F	67°F	67°F
Wind Speed	9 mph	8 mph	8 mph	8 mph	9 mph	10 mph	11 mph	10 mph	10 mph	10 mph	11 mph
Wind Direction	70	60	60	70	70	70	70	60	60	50	50
Wind Gust	16 mph	13 mph	13 mph	13 mph	16 mph	18 mph	20 mph	19 mph	18 mph	18 mph	20 mph
Chance of Precipitation	20%	17%	23%	30%	37%	37%	38%	37%	35%	33%	32%
Weather	Rain	Rain	Rain	Rain	Rain	Rain	Rain	Rain	Rain	Rain	Rain
Sky Cover	87%	87%	85%	83%	82%	82%	83%	84%	84%	84%	85%

Issued: Saturday August 05, 2023 09:00 PM CDT

Threat Level	None	Limited	Elevated	Significant	Extreme
Temperature	≥100 °F	100 to 96 °F	95 to 91 °F	90 to 86 °F	≤85 °F
Wind Chill	≥105 °F	105 to 101 °F	100 to 96 °F	95 to 91 °F	≤90 °F
Wind Speed	≤20 mph	20 to 24 mph	25 to 29 mph	30 to 39 mph	≥40 mph
Wind Gust	≤30 mph	30 to 34 mph	35 to 44 mph	45 to 59 mph	≥60 mph
Chance of Precipitation	≤15 %	15 to 24 %	25 to 54 %	55 to 74 %	≥75 %
Sky Cover	≤20 %	20 to 39 %	40 to 59 %	60 to 79 %	≥80 %

Note -

Grey color indicates no thresholds assigned

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Dangerous Heat Continues in the East; Heavy Rain and Flash Flooding in the Southwest, Plains, and Upper Midwest

ORD NWS Chicago Forecast Matrix