Wednesday Hi 62, partly sunny to partly cloudy, winds NE to ENE to NE, 11 to 13 to 6 MPH, G20 to 16 to 21 MPH until 6p
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IMPORTANT NOTE ON NWS DATA
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Wednesday and Wednesday Evening …
No Weather Hazards …
Mostly sunny, with a high near 62 Wednesday. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Surface high pressure over the core of the Great Lakes region will drift southeast while a mid/upper-level ridge follows eastward across the southern Great Lakes. Cloud-free skies are expected through tonight, though smoke from Canadian wildfires will continue to filter over the area. After a cooler day today, temps Thursday will return to the mid to upper 70s with the exception of colder conditions along the Illinois shoreline. Mild conditions will persist into Thursday evening ahead a cold front approaching from the northwest.
O’HARE FORECAST …
Forecast Beginning Wednesday, May 17, 2023
Wednesday: Mostly sunny, with a high near 62. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night: Partly cloudy, with a low around 45. Northeast wind 5 to 10 mph becoming southeast after midnight.
Thursday: Mostly sunny, with a high near 76. South southeast wind around 10 mph.
Thursday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 59. Breezy, with a south wind 10 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
Friday Night: Partly cloudy, with a low around 49.
Saturday: Sunny, with a high near 69.
Saturday Night: Mostly clear, with a low around 52.
Sunday: Mostly sunny, with a high near 76.
Sunday Night: Mostly clear, with a low around 51.
Monday: Sunny, with a high near 73.
Monday Night: Mostly clear, with a low around 53.
Tuesday: Sunny, with a high near 80.
SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with solar azimuth and trajectory, times for dawn, sunrise, solar noon, sunset, dusk …
NIGHT SKY THIS MONTH …
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Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
604 AM CDT Wed May 17 2023
.SHORT TERM… Issued at 203 AM CDT Wed May 17 2023
Benign weather through Thursday. Synoptic northeasterly winds, enhanced by the lake, will result in a large lake cooling footprint today with 50s right along the shore, and 60s well inland past I-355 and I-80. Lower 70s will be confined to far southern and southwestern portions of the CWA. Warmer temps expected Thursday as mid-upper level shortwave ridging and low level warm air advection overspreads the area in advance of next trough. Highs should rebound well into the 70s Thursday afternoon, though slight easterly component to the sfc flow will allow a weak lake breeze to form along IL shore keeping temps there cooler (60s). Fairly dense upper level smoke layer from Canadian wild fires is likely to at least partially obscure sun today and probably Thursday as well, otherwise not looking for much actual cloud cover.
– Izzi/NWS Chicago