High temperatures Wednesday afternoon warmed into the mid and upper 80s, officially reaching 89 degrees in Rockford! Dew point temperatures, for most, were in the low to mid 60s making the humidity fairly tolerable for the afternoon. However, dew point temperatures warmed into the mid and upper 60s from Sterling to DeKalb pushing the heat index into the low 90s late this afternoon. It’s also what helped fuel a few isolated thunderstorms over DeKalb County shortly after 5pm.
Thunderstorms Wednesday night won’t have too much of an impact on the local area overnight, except for maybe a few clouds. Temperatures heading into Thursday morning should be in the mid and upper 60s. Any cloud cover from storms Wednesday evening should be clearing out by Thursday morning, leaving us under a partly cloudy to mostly clear sky. Most of the day Thursday should remain dry, but warm. High temperatures will warm back into the mid and upper 80s, possibly reaching the low 90s by the afternoon. At the same time, dew point temperatures will rising into the upper 60s and low 70s. This will push the heat index as high as 95 to 96 degrees during peak heating.
A complex of thunderstorms will be moving across the Midwest Thursday morning from overnight storms over the Plains Wednesday evening. Those storms could be the limiting factor to us reaching the 90 degrees mark, however, Thursday afternoon. If those storms move in during the afternoon it won’t be as warm and the risk for severe weather will increase. If, however, the storms don’t move in until late evening high temperatures will have no problem reaching the low 90s.
Thursday will start the stretch of hot and humid weather which will take us straight through the weekend. The heat index through Sunday and Monday will top out in the low to mid 90s, possibly upper 90s Saturday and Sunday.