As of 11:28 EDT

Weather in Back Bay, MA

55°

Back Bay, Sunday, 11 October, 11:28

Overcast. Feels like 53°. High 55°, low 42°.

Pressure30.39 inHg

Wind6.9 mph S

Humidity74%

Visibility6.2 mi

Dew point47°

See detailed hourly forecast

Monthly outlook for Back Bay, MA: average high 56.7°, average low 44.2°. That is 1.9° below the climate normal for October. Precipitation is expected on 6 days (about 3.0 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 12 October (69.1°), the coolest 19 October (35.9°).

56.7°/44.2°

Average high / low

−1.9°

Below normal

6 / 5

Wet days / normal

3.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
11 October – 20 October	58.3°	60.8°	-1.4°
21 October – 30 October	54.1°	57.8°	-2°
31 October – 9 November	at normal	54.9°	—

October records over 66 years

85.1°5 October 2007All-time high

19.9°31 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Boston (2 mi).

Mon, 1269° / 45°

1.01

69 °

Back Bay, Monday, 12 October

Heavy rain. High 69°, low 45°.

Pressure29.77 inHg

Wind4.7 mph N

Humidity73%

Visibility6.2 mi

Dew point53°

Tue, 1362° / 50°

0.01

62 °

Back Bay, Tuesday, 13 October

Light rain. High 62°, low 50°.

Pressure30.03 inHg

Wind8.3 mph SE

Humidity81%

Visibility6.2 mi

Dew point52°

Wed, 1467° / 58°

0.03

67 °

Back Bay, Wednesday, 14 October

Light rain. High 67°, low 58°.

Pressure29.80 inHg

Wind3.9 mph E

Humidity88%

Visibility6.2 mi

Dew point64°

Thu, 1559° / 48°

59 °

Back Bay, Thursday, 15 October

Mostly clear. High 59°, low 48°.

Pressure30.12 inHg

Wind11 mph NW

Humidity56%

Visibility—

Dew point42°

Fri, 1654° / 45°

0.96

54 °

Back Bay, Friday, 16 October

Rain. High 54°, low 45°.

Pressure29.83 inHg

Wind19.6 mph NW

Humidity91%

Visibility—

Dew point47°

Sat, 1756° / 41°

0.07

56 °

Back Bay, Saturday, 17 October

Light rain. High 56°, low 41°.

Pressure29.62 inHg

Wind14.5 mph NW

Humidity51%

Visibility—

Dew point36°

Sun, 1846° / 36°

0.22

46 °

Back Bay, Sunday, 18 October

Snow. High 46°, low 36°.

Pressure30.12 inHg

Wind13.2 mph NW

Humidity44%

Visibility—

Dew point21°

Mon, 1952° / 36°

52 °

Back Bay, Monday, 19 October

Mostly clear. High 52°, low 36°.

Pressure30.56 inHg

Wind7.2 mph SW

Humidity33%

Visibility—

Dew point17°

Tue, 2062° / 41°

62 °

Back Bay, Tuesday, 20 October

Clear. High 62°, low 41°.

Pressure30.30 inHg

Wind7.8 mph SW

Humidity44%

Visibility—

Dew point33°

Wed, 2152° / 46°

52 °

Back Bay, Wednesday, 21 October

Clear. High 52°, low 46°.

Pressure30.45 inHg

Wind8.4 mph E

Humidity56%

Visibility—

Dew point37°

Thu, 2253° / 43°

53 °

Back Bay, Thursday, 22 October

Overcast. High 53°, low 43°.

Pressure30.50 inHg

Wind6.7 mph NE

Humidity62%

Visibility—

Dew point37°

Fri, 2354° / 44°

54 °

Back Bay, Friday, 23 October

Clear. High 54°, low 44°.

Pressure30.42 inHg

Wind8.2 mph NE

Humidity58%

Visibility—

Dew point37°

Sat, 2455° / 46°

55 °

Back Bay, Saturday, 24 October

Overcast. High 55°, low 46°.

Pressure30.18 inHg

Wind7.7 mph NE

Humidity66%

Visibility—

Dew point41°

Sun, 2555° / 44°

55 °

Back Bay, Sunday, 25 October

Overcast. High 55°, low 44°.

Pressure29.94 inHg

Wind9.1 mph N

Humidity65%

Visibility—

Dew point39°

Mon, 2656° / 42°

0.07

56 °

Back Bay, Monday, 26 October

Light rain. High 56°, low 42°.

Pressure29.97 inHg

Wind9.6 mph S

Humidity50%

Visibility—

Dew point31°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 2757° / 44°

0.13

57 °

Back Bay, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high57°

Average low44°

Average precipitation0.13 in

Chance of precipitation22%

Record high80° (1963)

Record low30° (1976)

Wed, 2857° / 43°

0.11

57 °

Back Bay, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high57°

Average low43°

Average precipitation0.11 in

Chance of precipitation33%

Record high78° (2023)

Record low30° (1976)

Thu, 2955° / 42°

0.14

55 °

Back Bay, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.14 in

Chance of precipitation25%

Record high71° (2014)

Record low31° (1965)

Fri, 3055° / 42°

0.16

55 °

Back Bay, Friday, 30 October

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.16 in

Chance of precipitation32%

Record high71° (1989)

Record low22° (2020)

Sat, 3156° / 42°

0.09

56 °

Back Bay, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.09 in

Chance of precipitation22%

Record high77° (2024)

Record low20° (2020)

Sun, 0157° / 43°

0.11

57 °

Back Bay, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high57°

Average low43°

Average precipitation0.11 in

Chance of precipitation32%

Record high77° (2024)

Record low33° (1964)

Mon, 0257° / 43°

0.1

57 °

Back Bay, Monday, 2 November

Climate normal for this date — 60-year average.

Average high57°

Average low43°

Average precipitation0.1 in

Chance of precipitation23%

Record high73° (1982)

Record low29° (1965)

Tue, 0356° / 42°

0.2

56 °

Back Bay, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.2 in

Chance of precipitation33%

Record high74° (2017)

Record low28° (2002)

Wed, 0455° / 42°

0.05

55 °

Back Bay, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.05 in

Chance of precipitation23%

Record high73° (1987)

Record low29° (2020)

Thu, 0555° / 42°

0.15

55 °

Back Bay, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.15 in

Chance of precipitation38%

Record high75° (2022)

Record low30° (1965)

Fri, 0654° / 42°

0.13

54 °

Back Bay, Friday, 6 November

Climate normal for this date — 60-year average.

Average high54°

Average low42°

Average precipitation0.13 in

Chance of precipitation38%

Record high76° (2022)

Record low30° (2012)

Sat, 0754° / 40°

0.06

54 °

Back Bay, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high54°

Average low40°

Average precipitation0.06 in

Chance of precipitation28%

Record high74° (2022)

Record low29° (1962)

Sun, 0852° / 40°

0.11

52 °

Back Bay, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high52°

Average low40°

Average precipitation0.11 in

Chance of precipitation35%

Record high67° (2020)

Record low28° (2019)

Mon, 0953° / 39°

0.11

53 °

Back Bay, Monday, 9 November

Climate normal for this date — 60-year average.

Average high53°

Average low39°

Average precipitation0.11 in

Chance of precipitation33%

Record high71° (2020)

Record low24° (2019)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Back Bay, MA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Back Bay, MA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.