4Warn Weather – Astronomical summer does not begin until the summer solstice, which occurs this year on Sunday, June 21. That is the longest day of the year in the Northern Hemisphere and marks the official start of summer on astronomical calendars.
Meteorologists, however, begin summer on June 1 because it makes climate records easier to track and compare from year to year.
Since weather and temperatures generally follow similar seasonal patterns, dividing the year into four three-month seasons creates cleaner statistics and more meaningful climate averages.
Think of it this way: meteorological summer corresponds to the three warmest months of the year, while astronomical summer corresponds to the Earth’s position relative to the sun.
Regardless of when you are ready to call it summer, temperatures will be above average for much of the week.
A stretch of sunshine and dry weather is expected to dominate Southeast Michigan through much of the workweek as high pressure remains in control. Afternoon temperatures will start near seasonal averages of mid-70s before gradually warming into the lower and middle 80s by midweek and late week.
Mornings will remain comfortable, with many communities starting the day in the upper 40s and 50s before afternoon sunshine helps temperatures rebound.
The dry stretch will provide excellent opportunities for outdoor activities, whether that means taking a walk, riding a bike, spending time on the water, visiting a park, or simply enjoying dinner outside.
The lack of rainfall does come with a reminder for homeowners and gardeners.
Lawns, flower beds, vegetable gardens, and especially newly planted shrubs and trees may need supplemental watering as the week progresses. Newly installed landscaping often requires consistent moisture to help roots establish, particularly during periods of sunshine and limited rainfall.
The sunny pattern also means taking precautions against early-season sun exposure.
Even on days that feel comfortable, ultraviolet radiation remains strong this time of year. Sunscreen, sunglasses, lightweight clothing, and hats can help reduce exposure during extended periods outdoors.
The weather pattern is expected to change heading into the weekend.
Rain chances remain low through Friday, but moisture will increase late in the week as warmer, more humid air moves into the Great Lakes.
The first opportunity for showers may arrive late Friday night into Saturday morning.
Additional chances for showers and thunderstorms are expected Saturday, Sunday, and potentially into Monday as a more active weather pattern develops across the region.
The timing and coverage of rainfall will become clearer over the next several days, but for now, much of the workweek appears dry.
For those eager to enjoy the first week of meteorological summer, the forecast offers a favorable start: cool mornings, warm afternoons, plenty of sunshine, and several days to enjoy the outdoors before weekend rain chances return.
Share your weather photos with Local 4 at MIPics.