A prolonged stretch of hot and dry weather is expected to take hold across central Illinois this week, bringing summer heat back to the region after several weeks of frequent rainfall.
A high pressure building over the Midwest will dominate the weather pattern, allowing local temperatures to climb steadily while keeping our storm chances to a minimum. Afternoon highs today are forecasted to reach the upper 80s to around 90 degrees, with humidity pushing heat index values into the mid-90s.
The hottest conditions are expected from Tuesday through Saturday, when temperatures combined with high humidity will produce heat index values ranging from 95 to as high as 105 degrees during the afternoon hours. Residents are encouraged to take precautions during the hottest part of the day by staying hydrated, limiting prolonged outdoor activity, and checking on vulnerable neighbors, children, and pets.
Unlike recent weeks, the upcoming forecast marks a significant shift toward much drier conditions. Rain chances are expected to remain very limited throughout the workweek as that ridge of high pressure suppresses widespread thunderstorm development.
Forecasters indicate that only a slight chance of scattered showers or thunderstorms could return next weekend as the weather pattern begins to weaken. Until then, most of central Illinois is expected to experience several consecutive days of sunshine, above-normal temperatures, and little to no rainfall.
The dry stretch will provide a welcome opportunity for farmers, construction crews, and anyone with outdoor plans after repeated rounds of heavy rain affected much of the region in recent weeks. However, the combination of prolonged heat and limited rainfall could begin drying soils quickly if the pattern persists into next week.
Residents should continue monitoring the latest forecasts, as heat advisories or other weather alerts may be issued if heat index values trend higher later this week.