Rochester, MA Weather Forecast
Plymouth County, Massachusetts
Seven-day outlook
34–68°F across the weekThe week runs between 34° and 68°, with tomorrow the warmest day of it. There is no real trend across it: one day looks much like the next. Every day in the outlook stays dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Rochester forecast
Rochester sits at 41.7609°N, 70.8390°W in Plymouth County, Massachusetts. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Plymouth County
- Coordinates
- 41.7609°N, 70.8390°W
- Population
- 5,871 · 2023 estimate
- Land area
- 33.57 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Rochester, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Rochester?
The nearest Doppler radar is KBOX (Boston, MA), 20 miles to the NW. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Rochester its center is about 1,100 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Rochester, so low-level rotation and the leading edge of a gust front show up on it. Rochester is closer to its radar than 84% of US cities.
The closest instrument actually measuring the air is KEWB · New Bedford Rgnl on the ASOS/AWOS network, 8.4 miles away. Near enough to be representative on most days, though a summer thunderstorm can soak one and miss the other entirely.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the Massachusetts observing network as of this build.
Forecasts near Rochester
- Acushnet, MA4 mi
- Marion, MA6 mi
- Mattapoisett, MA7 mi
- Wareham, MA7 mi
- Lakeville, MA8 mi
- Middleborough, MA8 mi
- New Bedford, MA9 mi
- Fairhaven, MA9 mi
Elsewhere in Massachusetts
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