🌔 🌕 🌗 🌑 Waxing Gibbous Moon, sky cover overnight Wed. to Thu. 59% to 16% to 21%, winds NW 10 to 2 MPH, Low 40, 5a to 6a
NWS CHGO | NWS HRLY | /NWSchicago | 🌡
ARLINGTON HEIGHTS WEATHER
▴ forecast7 (Arl. Hts.) | RADAR | WIDE RADAR
IMPORTANT NOTE ON NWS DATA
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NIGHT FORECASTS …
NOTE: Keep in mind lunar rise and set times don’t always correspond with night weather and early morning lows because on some days during the month the moon is visible in the sky predominantly during the daytime hours.
Overnight Wednesday to Thursday …
No Weather Hazards expected …
Only forecast concern this period is the potential for patchy frost tonight.
DISCUSSION…
Temps will quickly drop into the 40s this evening with lows in the upper 30s likely for most of the area tonight. Light/calm winds will likely allow for some areas to drop into the mid 30s by morning. Thus, some patchy frost is possible though there remains quite a bit of uncertainty given there is some weak warm air advection overnight that may allow temps to level off overnight. However, the most favored areas for some patchy frost appear to be far northeast IL and northwest IN and added it back into the forecast for tonight.
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O’HARE FORECAST …
Forecast Beginning Wednesday Night, May 03, 2023 …
Tonight: Partly cloudy, with a low around 41. Northeast wind 5 to 10 mph becoming light and variable after midnight.
Thursday: Sunny, with a high near 69. South wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night: Mostly clear, with a low around 51. Southeast wind around 10 mph, with gusts as high as 15 mph.
Friday: Partly sunny, with a high near 73. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night: Mostly cloudy, with a low around 51. South southeast wind 10 to 15 mph.
Saturday: Mostly sunny, with a high near 68.
Saturday Night: Partly cloudy, with a low around 52.
SundayMostly sunny, with a high near 74.
Sunday Night: A chance of showers after 2am. Partly cloudy, with a low around 56.
Monday: A chance of showers. Partly sunny, with a high near 74.
Monday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Tuesday: A chance of showers. Mostly cloudy, with a high near 74.
Tuesday Night: A chance of showers. Mostly cloudy, with a low around 53.
Wednesday: A chance of showers. Partly sunny, with a high near 67.
O’Hare forecast archive and hourly weather observations archive are available HERE on the CARDINAL NEWS Magazine.
Arlingtoncardinal.com/moonphases
Arlingtoncardinal.com/nightsky
NIGHT SKY THIS MONTH …
Check the night sky objects for this month and past months in the playlist from the Space Telescope Science Institute YouTube channel Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky” (Musical track The Far River written by Jonn Serrie, from the album And the Stars Go With You courtesy of New World Music Ltd. Musical track The Far River written by Jonn Serrie, from the album And the Stars Go With You courtesy of New World Music Ltd).
Telephoto lens, ISO 100, f/11, Shutter Speed 1/100 to 1/125 for the Moon.
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Telephoto lens, ISO 1600, f/11, Shutter Speed 2.5″ for the skyline. The skyline exposure was toned down, and brightness and contrast was adjusted in Photoshop.
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Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
1225 AM CDT Thu May 4 2023
.SHORT TERM… Issued at 222 PM CDT Wed May 3 2023
Through Thursday night…
Only forecast concern this period is the potential for patchy frost tonight.
A lake breeze continues to move inland this afternoon with temperatures only in the 40s at the lakeshore. The lake breeze will continue inland through sunset when it will dissipate.
Temps will quickly drop into the 40s this evening with lows in the upper 30s likely for most of the area tonight. Light/calm winds will likely allow for some areas to drop into the mid 30s by morning. Thus, some patchy frost is possible though there remains quite a bit of uncertainty given there is some weak warm air advection overnight that may allow temps to level off overnight. However, the most favored areas for some patchy frost appear to be far northeast IL and northwest IN and added it back into the forecast for tonight.
Thursday will be warmer with highs in the lower 70s for much of the area, but a lake breeze will keep areas near the lake cooler. Lows Thursday night will also be warmer, in the upper 40s/lower 50s.
CMS/NWS Chicago
