Boston starts Saturday, October 24, with clear skies and temperatures in the low 40s, then warms to near 58 in the afternoon. Sunshine is expected through the weekend, with highs near 63 Sunday and 67 Monday before daytime temperatures ease into the low 50s Tuesday and Wednesday, according to the National Weather Service forecast.
Saturday’s forecast high is close to the date-specific normal: the National Weather Service Boston/Norton climate report lists 59 degrees as Boston’s normal maximum for October 24. The same report gives 80 degrees as the date’s record high, set in 1900.
Frost risk is greatest inland
The mild city forecast does not rule out frost elsewhere. The National Weather Service Boston/Norton discussion says colder inland locations away from the immediate coast and urban heat islands could see lows in the 20s and lower 30s Saturday and Sunday mornings, with frost possible. Boston’s forecast calls for clear skies Saturday night and a sunny Sunday.
For gardeners protecting sensitive plants, UMass Amherst’s Center for Agriculture, Food, and the Environment says row covers can offer some frost protection and advises securing all edges.
A warm Monday, then a cooler stretch
Monday is forecast to be the warmest day of the stretch, near 67 under sunny skies. Highs are expected to fall back to around 52 Tuesday and Wednesday, with Tuesday night dropping to the mid-30s. The forecast points to a cooler turn after the weekend, not a return to the weekend’s mild afternoons.
Marine conditions differ from the land forecast
On the water, seas of about 4 to 6 feet are forecast over the outer waters. Small Craft Advisories apply to portions of nearby coastal waters through Saturday evening and into early Sunday, according to the National Weather Service Boston/Norton discussion. Boaters should check the latest marine forecast before heading out.
