Warm conditions continue Friday, along with the return of the humidity
It was a rather warm Thursday across northern Michigan (80s to a couple 90° readings), but the thermometer will be turning even higher as we head into Friday and especially on Saturday.
Quiet and mild conditions continue throughout the rest of Thursday evening/night as high pressure holds on across the region. Low temperatures overnight will be slightly warmer with winds turning to the south - upper 50s to middle 60s. A late overnight shower is possible north of M-28 in the E. Upper (shower/storm activity riding along the 'heat dome'), but it will be isolated at most.
The heat will remain on Friday, but the humidity will be the more noticeable addition to the forecast. Daytime temperatures climbing into the 80s to lower 90s combined with the increasing humidity will make way for an sticky to uncomfortable feeling if stepping outside. The main wildcard in play Friday is cloud coverage concerns as any additional clouds will limit the daytime temperatures. At this point, partly to mostly sunny skies are expected throughout most of the day, allowing the atmosphere to warm quickly throughout northern Michigan. In terms of potential for rain, there's a small chance to see showers/storms ride along the edge of the heat dome and into the E. Upper region Friday afternoon. Activity, however, looks minimal across northern Michigan at this point.
Saturday will showcase the peak of the heat and humidity, with many places approaching dangerous 'heat index/feels like' values for those that are susceptible to heat-related illnesses. Daytime temperatures will range from the upper 80s (E. Upper) to middle-upper 90s (N. Lower). Combine the air temperature with the tropical humidity, and heat index values will be approaching, if not exceeding, 100° in the N. Lower. Stay hydrated if you plan on partaking in any outdoor activities Saturday.
A cold front will swing through the area late Sunday, returning the chance for scattered showers and storms.
-Meteorologist Blake Hansen