A much more summer-like forecast is in the offing this upcoming weekend with building heat/humidity along with thunderstorm chances beginning Sunday.
For the short term, high pressure will influence the weather across Northern Michigan with a north/northeast wind direction Thursday keeping temperatures a bit below normal for the end of June. Highs will top out in the 60's right along the Great Lakes with low/mid-70's inland. We still have enough moisture available which combined with daytime heating will lead to a patchy area of light rain showers bubbling up mainly inland south of highway M-32 Thursday afternoon. While these will not be heavy, the greatest concentration of showers will be along the M-37/US-131 corridors south of Traverse City and Kalkaska into the Cadillac/Reed City/Baldwin/Big Rapids areas. These rain showers will thrive on daytime heating and quickly die off this evening leading to a dry/quiet night. Lows tonight will drop into the 50's.
With time, winds will turn more southerly heading into the weekend drawing northward a moist/humid airmass. We will feel it starting Saturday but more so Sunday as humidity levels will rise with dewpoint readings climbing well into the 60's/70F. There will also be an increased chance for thunderstorms beginning Sunday into Monday. Highs Friday will be in the 70's with 70's and some 80's Saturday and mainly 80's Sunday.