🌕 🌗 🌑 🌓 Full Moon, sky cover overnight Fri. to Sat. 39% to 75% to 57%, winds SSE 9 to 10 to 9 MPH, Low 56, 6a to 7a
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 Friday to Saturday …
No Weather Hazards expected …
Rain chances will begin to increase this evening as the decaying remnants of the Mesoscale Convective Vortex (MCV) currently over western Iowa continues to move closer.
Showers are expected to move east and dissipate by daybreak.
O’HARE FORECAST …
Forecast Beginning Friday Night, May 05, 2023 …
Friday Night: A 30 percent chance of showers, mainly after 3am. Mostly cloudy, with a low around 56. South southeast wind around 10 mph, with gusts as high as 20 mph.
Saturday: A 30 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 74. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night: A 50 percent chance of showers and thunderstorms, mainly after 10pm. Mostly cloudy, with a low around 63. South southeast wind around 10 mph, with gusts as high as 25 mph.
Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Southwest wind around 10 mph, with gusts as high as 15 mph.
Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. East wind 5 to 10 mph.
Monday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Monday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Tuesday: Mostly sunny, with a high near 70.
Tuesday Night: Mostly clear, with a low around 50.
Wednesday: Sunny, with a high near 70.
Wednesday Night: Partly cloudy, with a low around 51.
Thursday: Mostly sunny, with a high near 75.
Thursday Night: Partly cloudy, with a low around 56.
Friday: A chance of showers. Partly sunny, with a high near 78.
O’Hare forecast archive and hourly weather observations archive are available HERE on the CARDINAL NEWS Magazine.
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.
Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
1225 AM CDT Sat May 6 2023
.SHORT TERM… Issued at 245 PM CDT Fri May 5 2023
Dry and breezy conditions will continue through the rest of this afternoon before winds ease this evening. Until then gusts of 20 to 25 mph, with occasionally higher gusts, are expected which in combination with the low humidities will make for an elevated fire risk.
Rain chances will begin to increase this evening as the decaying remnants of the Mesoscale Convective Vortex (MCV) currently over western Iowa continues to move closer. Guidance has continued to be in agreement that sufficient moisture would return this evening which in conjunction with warm advection, would allow an area of showers to move across portions of northern Illinois overnight into early Saturday morning. However, the axis of better instability is expected to remain west of the area which should keep the showers in a decaying state as they move through. Furthermore, what limited instability was forecast to be over portions of the area has trended much weaker to the point that forecast soundings show very unimpressive lapse rates and virtually no CAPE. Therefore I have decided to pull the mention of thunder from the forecast for tonight into Saturday morning.
Showers are expected to move east and dissipate by daybreak Saturday morning for most, but a few lingering showers may be observed through the morning hours for areas along the IL-WI line. Otherwise, another dry and seasonably mild afternoon is on ta Pfor Saturday but with notably more cloud cover. While the clouds will aid in keeping temperatures a tad cooler than today, highs are still forecast to top out in the mid-70s areawide with 60s expected for areas along the IL lakeshore. Finally, winds are also expected to once again be breezy with southeasterly gusts in the 20 to 25 mph range.