The first full weekend of autumn will bring a change to the air, with much cooler temperatures and crisp, fall mornings.

Friday will mark the last day it’s going to feel like summer for a while. Of course, we’re into the final week of September, which doesn’t typically mean beach weather. However, Friday’s highs will reach the lower 80s, so you could make a trip to the shores if you want to start the weekend early.

There might be a few showers Friday evening and overnight, but they won’t be widespread, and some areas may stay entirely dry. A cold front will push the warm air out to sea, and it will feel quite chilly Saturday morning.

If you’re going hiking, biking, or running…

Advertisement

This is the time of year when all of these activities can be done almost anytime during the day. Temperatures typically aren’t very warm, and this weekend will feature lots of sunshine and afternoon highs in the middle 60s. Sunday will be the cooler of the two weekend days by a couple of degrees.

Saturday's highs will reach the low to mid 60s across much of New EnglandSaturday’s highs will reach the low- to mid-60s across much of New England. —Dave Epstein

If you’re going beaching and boating…

Heading out to relax by the water is still possible this time of year—it’s just become a bit cool for swimming. Winds will be out of the north-northwest this weekend and generally under the 10 knot range. Seas will be 2-4 feet throughout the weekend, making for a nice boating day either Saturday or Sunday. High tide this weekend is between about 6:30 and 7:30 twice each day.

If you’re playing soccer, softball, baseball, or golf…

Saturday’s forecast:  Fields could be wet the first hour or two from overnight showers. I expect the dry air to quickly evaporate any moisture, leaving few—if any—puddles and dry, brittle grass where rainfall has been especially lacking. Temperatures will be in the 50s through about 11 a.m. and then warm into the low- to mid-60s.

Sunday’s outlook: On Sunday, any moisture on playing fields will be from dew, and this will rapidly dry after sunrise. It will be in the 40s outside of the city until about 9 a.m., then in the 50s through noon before temperatures reach their maximum of the low- to mid-60s around 3 p.m.

Sunday's highs will feature some of the coolest air so far this fallSunday’s highs will feature some of the coolest air so far this fall. —Dave Epstein

If you’re gardening…

Advertisement

There’s no significant rain in sight. You can certainly plant and move things this time of year, but if you do, it’s critical that you’re watering before, during, and after you plant. The ground should be evenly moist to the depth you are planting to ensure the success of the tree, shrub, or perennial.

If you’re running errands…

Get errands done early to take advantage of the sunshine on either day, or do them in the later part of the day to avoid the biggest crowds.

If you’re going to a local farm to nab pumpkins, apples, and doughnuts…

This is going to be an ideal weekend for those traditional New England fall activities. Head to your favorite farm early to steer clear of the crowds during the middle of the day. And don’t forget the sunscreen: Even though it’s chillier this time of year, you can still get a sunburn.

I will be updating the forecast on Twitter @growingwisdom throughout the weekend.