Day 1 Convective Outlook/Categorical for Monday, May 4, 2026 indicates Level 1 Severe Thunderstorms possible (SOURCE: NOAA/NWS Storm Prediction Center).
See also: LIVE STREAMS: Arlingtoncardinal.com/StormChasers
CHICAGOLAND DETAILS …
Arlington Heights high of 79 is warmer than Los Angeles on Monday, May 4, 2026 during the first full week of Arlington Alfresco 2026.
Windy and warm conditions today; areas of blowing dust in open areas this afternoon, especially south of I-80.
Shower and thunderstorms expected tonight with a marginal (level 1 of 5) severe risk.
Much colder temperatures expected Tuesday.
ARL HTS FORECAST …
Monday Afternoon: Sunny, with a high near 79. Breezy, with a west southwest wind around 20 mph, with gusts as high as 30 mph.
Monday Night: Scattered showers and thunderstorms before 3am, then isolated showers between 3am and 4am. Mostly cloudy, with a low around 50. West southwest wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 50%.
Tuesday: A 20 percent chance of showers after 7am. Mostly cloudy, with a high near 56. North northwest wind 5 to 10 mph.
Tuesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 41. North northwest wind around 5 mph, with gusts as high as 10 mph.
Wednesday: Partly sunny, with a high near 57. North northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night: Mostly cloudy, with a low around 40.
Thursday: Partly sunny, with a high near 59.
Thursday Night: Mostly cloudy, with a low around 43.
RADAR • Clouds • Temps • NWS Chicago
PHOENIX FORECAST …
Monday: Cloudy, with a high near 82. West southwest wind around 5 mph.
Monday Night: A 20 percent chance of showers after midnight. Cloudy, then gradually becoming partly cloudy, with a low around 64. Southwest wind around 5 mph.
Tuesday: A 20 percent chance of showers between 11am and 1pm. Mostly sunny, with a high near 79. West southwest wind 5 to 10 mph.
Tuesday Night: Clear, with a low around 59. West southwest wind 5 to 10 mph becoming light west after midnight.
Wednesday: Sunny, with a high near 85. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night: Mostly clear, with a low around 63. West southwest wind around 5 mph becoming calm in the evening.
Thursday: Sunny, with a high near 94. Calm wind becoming west southwest around 5 mph in the afternoon.
Thursday Night: Mostly clear, with a low around 67. Southwest wind around 5 mph becoming calm.
RADAR • Clouds • Temps • NWS Phoenix
MIAMI FORECAST …
Monday Afternoon: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Northeast wind 11 to 13 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night: A chance of showers and thunderstorms before 5am, then a slight chance of showers. Mostly cloudy, with a low around 73. East wind 6 to 9 mph. Chance of precipitation is 40%.
Tuesday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 83. East wind 6 to 9 mph. Chance of precipitation is 40%.
Tuesday Night: Mostly cloudy, with a low around 74. Southeast wind 5 to 7 mph.
Wednesday: Mostly sunny, with a high near 86. Light southeast wind increasing to 5 to 9 mph in the morning.
Wednesday Night: Partly cloudy, with a low around 75. Southeast wind 5 to 7 mph.
Thursday: Mostly sunny, with a high near 89. South wind 5 to 9 mph.
Thursday Night: Partly cloudy, with a low around 75. Southwest wind 3 to 8 mph.
RADAR • Clouds • Temps • NWS Miami
LAX FORECAST …
Monday: A 20 percent chance of showers. Mostly sunny, with a high near 67. West southwest wind around 15 mph, with gusts as high as 20 mph.
Monday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 55. West southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Tuesday: Mostly sunny, with a high near 66. West southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night: Mostly clear, with a low around 55. West southwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Wednesday: Sunny, with a high near 69. East wind 5 to 15 mph becoming west southwest in the afternoon.
Wednesday Night: Mostly clear, with a low around 57.
Thursday: Sunny, with a high near 71.
Thursday Night: Mostly clear, with a low around 59.
RADAR • Clouds • Temps • NWS Los Angeles
WASH DC FORECAST …
Monday Afternoon: Sunny, with a high near 77. Southwest wind around 13 mph, with gusts as high as 23 mph.
Monday Night: Mostly clear, with a low around 60. South wind around 9 mph.
Tuesday: Sunny, with a high near 85. Breezy, with a south wind 10 to 20 mph, with gusts as high as 33 mph.
Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 64. South wind around 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Wednesday: Showers, with thunderstorms also possible after 2pm. High near 78. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Thursday: Showers. High near 61. Chance of precipitation is 80%.
Thursday Night: A chance of showers before 2am. Mostly cloudy, with a low around 46. Chance of precipitation is 30%.
