As of 18:19 EDT

Weather in Cambridge, MA

88°

Cambridge, Saturday, 8 August, 18:19

Overcast. Feels like 96°. High 88°, low 72°.

Pressure29.85 inHg

Wind7 mph SE

Humidity61%

Visibility6.2 mi

Dew point72°

See detailed hourly forecast

Monthly outlook for Cambridge, MA: average high 79.9°, average low 64.2°. That is 0.1° above the climate normal for August. Precipitation is expected on 7 days (about 4.7 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 9 August (95.3°), the coolest 14 August (58.2°).

79.9°/64.2°

Average high / low

+0.1°

Above normal

7 / 5

Wet days / normal

4.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	83.5°	80.4°	+1.7°
18 August – 27 August	73.9°	78.5°	-2.5°
28 August – 6 September	at normal	76.8°	—

August records over 66 years

100°2 August 1975All-time high

46.9°31 August 1965All-time low

Climate normals and records are computed from the nearest reference point — Medford (3 mi).

Sun, 0995° / 73°

95 °

Cambridge, Sunday, 9 August

Clear. High 95°, low 73°.

Pressure29.88 inHg

Wind10.4 mph W

Humidity37%

Visibility6.2 mi

Dew point61°

Mon, 1092° / 71°

0.06

92 °

Cambridge, Monday, 10 August

Light rain. High 92°, low 71°.

Pressure29.94 inHg

Wind4.8 mph S

Humidity33%

Visibility6.2 mi

Dew point56°

Tue, 1190° / 70°

90 °

Cambridge, Tuesday, 11 August

Mostly clear. High 90°, low 70°.

Pressure29.77 inHg

Wind12.1 mph NW

Humidity33%

Visibility6.2 mi

Dew point55°

Wed, 1273° / 63°

0.48

73 °

Cambridge, Wednesday, 12 August

Rain. High 73°, low 63°.

Pressure29.77 inHg

Wind6.2 mph E

Humidity93%

Visibility6.2 mi

Dew point63°

Thu, 1378° / 61°

0.31

78 °

Cambridge, Thursday, 13 August

Light rain. High 78°, low 61°.

Pressure29.71 inHg

Wind12 mph W

Humidity71%

Visibility—

Dew point65°

Fri, 1480° / 58°

80 °

Cambridge, Friday, 14 August

Overcast. High 80°, low 58°.

Pressure29.88 inHg

Wind8.7 mph W

Humidity41%

Visibility—

Dew point45°

Sat, 1577° / 59°

77 °

Cambridge, Saturday, 15 August

Clear. High 77°, low 59°.

Pressure30.09 inHg

Wind7.8 mph NW

Humidity38%

Visibility—

Dew point44°

Sun, 1679° / 58°

79 °

Cambridge, Sunday, 16 August

Clear. High 79°, low 58°.

Pressure30.27 inHg

Wind10.4 mph S

Humidity32%

Visibility—

Dew point42°

Mon, 1783° / 61°

83 °

Cambridge, Monday, 17 August

Overcast. High 83°, low 61°.

Pressure30.18 inHg

Wind10.1 mph SW

Humidity33%

Visibility—

Dew point45°

Tue, 1873° / 66°

1.5

73 °

Cambridge, Tuesday, 18 August

Heavy rain. High 73°, low 66°.

Pressure30.03 inHg

Wind10.6 mph S

Humidity98%

Visibility—

Dew point66°

Wed, 1975° / 65°

75 °

Cambridge, Wednesday, 19 August

Partly cloudy. High 75°, low 65°.

Pressure29.85 inHg

Wind6.4 mph E

Humidity67%

Visibility—

Dew point62°

Thu, 2075° / 63°

75 °

Cambridge, Thursday, 20 August

Overcast. High 75°, low 63°.

Pressure30.00 inHg

Wind7.9 mph E

Humidity63%

Visibility—

Dew point58°

Fri, 2175° / 62°

0.96

75 °

Cambridge, Friday, 21 August

Heavy rain. High 75°, low 62°.

Pressure30.00 inHg

Wind10.8 mph S

Humidity60%

Visibility—

Dew point58°

Sat, 2274° / 65°

1.25

74 °

Cambridge, Saturday, 22 August

Heavy rain. High 74°, low 65°.

Pressure29.77 inHg

Wind9.9 mph S

Humidity96%

Visibility—

Dew point69°

Sun, 2372° / 59°

72 °

Cambridge, Sunday, 23 August

Clear. High 72°, low 59°.

Pressure29.77 inHg

Wind13.5 mph W

Humidity49%

Visibility—

Dew point46°

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

Mon, 2478° / 62°

0.07

78 °

Cambridge, Monday, 24 August

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.07 in

Chance of precipitation27%

Record high91° (1998)

Record low52° (1971)

Tue, 2578° / 62°

0.11

78 °

Cambridge, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.11 in

Chance of precipitation28%

Record high95° (1969)

Record low53° (1971)

Wed, 2680° / 62°

0.06

80 °

Cambridge, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high80°

Average low62°

Average precipitation0.06 in

Chance of precipitation18%

Record high93° (1993)

Record low50° (1981)

Thu, 2779° / 64°

0.09

79 °

Cambridge, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high79°

Average low64°

Average precipitation0.09 in

Chance of precipitation32%

Record high96° (1993)

Record low52° (1989)

Fri, 2878° / 64°

0.11

78 °

Cambridge, Friday, 28 August

Climate normal for this date — 60-year average.

Average high78°

Average low64°

Average precipitation0.11 in

Chance of precipitation28%

Record high96° (1993)

Record low53° (1986)

Sat, 2977° / 63°

0.17

77 °

Cambridge, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high77°

Average low63°

Average precipitation0.17 in

Chance of precipitation30%

Record high95° (2018)

Record low48° (1986)

Sun, 3078° / 62°

0.15

78 °

Cambridge, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.15 in

Chance of precipitation23%

Record high93° (1973)

Record low48° (1986)

Mon, 3178° / 62°

0.07

78 °

Cambridge, Monday, 31 August

Climate normal for this date — 60-year average.

Average high78°

Average low62°

Average precipitation0.07 in

Chance of precipitation25%

Record high92° (2010)

Record low47° (1965)

Tue, 0176° / 61°

0.05

76 °

Cambridge, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high76°

Average low61°

Average precipitation0.05 in

Chance of precipitation23%

Record high93° (2010)

Record low50° (1975)

Wed, 0276° / 60°

0.16

76 °

Cambridge, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high76°

Average low60°

Average precipitation0.16 in

Chance of precipitation25%

Record high94° (2010)

Record low50° (2017)

Thu, 0376° / 61°

0.13

76 °

Cambridge, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high76°

Average low61°

Average precipitation0.13 in

Chance of precipitation33%

Record high94° (2018)

Record low50° (1967)

Fri, 0476° / 61°

0.12

76 °

Cambridge, Friday, 4 September

Climate normal for this date — 60-year average.

Average high76°

Average low61°

Average precipitation0.12 in

Chance of precipitation22%

Record high90° (1973)

Record low51° (1987)

Sat, 0576° / 61°

0.08

76 °

Cambridge, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high76°

Average low61°

Average precipitation0.08 in

Chance of precipitation17%

Record high90° (1971)

Record low51° (1994)

Sun, 0675° / 60°

0.16

75 °

Cambridge, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high75°

Average low60°

Average precipitation0.16 in

Chance of precipitation33%

Record high95° (2018)

Record low50° (1965)

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 Cambridge, 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 Cambridge, 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.