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Ocean Bluff-Brant Rock, MA Weather
Ocean Bluff-Brant Rock, Massachusetts sits at 42.1022, -70.6576. Its warmest month is July, when the day usually reaches 82F, and its coldest is January, when the night usually falls to 21F. April is the wettest, with rain on about 13 days. The hottest day in the station record is 101F on July 6, 2010, and the coldest night -12F on February 21, 2015. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About Ocean Bluff-Brant Rock weather
Ocean Bluff-Brant Rock sits at 42.1022, -70.6576 and covers about 2.175 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts.
- Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Warnings and alerts: the National Weather Service, passed through unchanged.
- Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
- Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
- Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
What the weather is usually like in Ocean Bluff-Brant Rock
Ocean Bluff-Brant Rock is warmest in July, when the day usually reaches 82F, and coldest in January, when the night usually falls to 21F. April is the wettest month, with rain on about 13 days of it.
The same year as numbers
| Month | Usual high | Usual low | Rain days |
|---|---|---|---|
| January | 38F | 21F | 10 |
| February | 40F | 22F | 9 |
| March | 46F | 28F | 11 |
| April | 56F | 36F | 13 |
| May | 67F | 46F | 13 |
| June | 76F | 56F | 13 |
| July | 82F | 62F | 11 |
| August | 80F | 61F | 12 |
| September | 74F | 54F | 12 |
| October | 63F | 43F | 13 |
| November | 52F | 34F | 10 |
| December | 43F | 26F | 12 |
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Plymouth Muni Ap station 13.9 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
Ocean Bluff-Brant Rock weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Ocean Bluff-Brant Rock: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Ocean Bluff-Brant Rock weather records
In 30,471 days of observations Ocean Bluff-Brant Rock has been as hot as 101F and as cold as -12F. Not averages: the actual days.
NOAA GHCN daily station records, observed 1996 to 2025: temperature at the Plymouth Muni Ap station, 13.9 miles away; snowfall at the Hingham station, 15.6 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about Ocean Bluff-Brant Rock weather
What is the weather usually like in Ocean Bluff-Brant Rock, MA?
Ocean Bluff-Brant Rock is warmest in July, when the day usually reaches 82F, and coldest in January, when the night usually falls to 21F. Rain falls on roughly 139 days a year, most often in April. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Ocean Bluff-Brant Rock, MA?
About 139 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. April is the wettest month with rain on about 13 of its days, and February the driest with about 9.
What is the hottest it has ever been in Ocean Bluff-Brant Rock, MA?
The hottest day measured for Ocean Bluff-Brant Rock reached 101F on July 6, 2010, and the coldest night -12F on February 21, 2015. Both are real NOAA station measurements from the GHCN daily archive, observed 1996 to 2025, at the Plymouth Muni Ap station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Ocean Bluff-Brant Rock, MA?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the Ocean Bluff-Brant Rock forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.