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Boston, MA Weather on July 11

Boston hit 99°F on this July day in 1988

July 11th in Boston has seen extreme heat, with the record high of 99°F set in 1988 standing well above the typical summer day average of 82°F. While the typical low hovers around 65°F, the city has also experienced cooler overnight temperatures, including a record low of 58°F in 1986. Across 55 years of recorded data, this date shows the volatile nature of New England's summer weather, where oppressive heat waves can give way to surprisingly cool nights.

By Weather On This Day|
Avg High
82°F
Avg Low
65°F
Record High
99°F
1988
Record Low
58°F
2002
Boston, MA on July 11 — Temperature History40°F60°F80°F100°F19801990200020102020HighLow

What to Expect on July 11

Planning for July 11th in Boston, MA? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.

Frequently Asked Questions

What was the warmest July 11 ever in Boston?

The warmest July 11 in Boston, MA reached 99°F in 1988. That is 17°F above the long-term average high of 82°F.

What was the coldest July 11 ever in Boston?

The coldest July 11 in Boston, MA dropped to 58°F in 2002. That is 7°F below the long-term average low of 65°F.

What is the average temperature on July 11 in Boston?

On July 11, Boston averages a high of 82°F and a low of 65°F based on 55 years of NOAA weather observations from BOSTON.

How many years of weather data are available for July 11 in Boston?

We have 55 years of weather records for July 11 in Boston, MA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.

July 11 Weather History in Boston

YearHighLowPrecipSnow
202575°F63°F0"--
202490°F74°F0"--
202387°F66°F0"--
202287°F63°F0"--
202182°F62°F0.08"--
202089°F69°F0.03"--
201986°F71°F0.05"--
201875°F66°F0.48"--
201783°F67°F0.43"--
201672°F59°F0"--
201583°F68°F0"--
201473°F63°F0"--
201382°F73°F0.43"--
201280°F66°F0"--
201193°F68°F0"--
201083°F69°F0.03"--
200979°F59°F0.91"--
200877°F66°F0"--
200787°F65°F0"--
200684°F68°F0.05"--
200592°F66°F0"--
200473°F63°F0"--
200366°F59°F0.53"--
200275°F58°F0"--
200173°F62°F0.03"--
200082°F64°F0"--
199979°F60°F0"--
199877°F62°F0"--
199786°F62°F0"--
199682°F61°F0"--
199571°F59°F0.41"--
199481°F66°F0"--
199392°F76°F0"--
199286°F64°F0.46"--
199183°F65°F0"--
199076°F66°F0"--
198987°F66°F0.05"--
198899°F71°F0.41"--
198780°F66°F0"--
198677°F58°F0"--
198585°F69°F0"--
198482°F64°F0"--
198382°F64°F0"--
198280°F65°F0"--
198193°F73°F0"--
198088°F66°F0.18"--
197980°F62°F0"--
197876°F63°F0"--
197783°F61°F0"--
197688°F66°F0.28"--
197586°F67°F0"--
197476°F60°F0"--
197383°F63°F1.07"--
197291°F68°F0"--
197177°F66°F0"--

Based on 55 years of data from NOAA station: BOSTON

How Has July 11 Changed?

The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.

Monthly Climate Averages

Historical temperature and precipitation averages for Boston, MA, based on 55+ years of weather data.

Warmest MonthJulyAvg High: 84°F / Low: 64°F
Coldest MonthJanuaryAvg High: 36°F / Low: 20°F
Jan
36°/ 20°
💧 8.7"
❄️ 2.2"
Feb
39°/ 22°
💧 9.2"
❄️ 2.4"
Mar
47°/ 30°
💧 9.7"
❄️ 2.2"
Apr
57°/ 39°
💧 8.5"
❄️ 1.9"
May
68°/ 49°
💧 7.5"
❄️ 1.5"
Jun
78°/ 58°
💧 8.8"
Jul
84°/ 64°
💧 9.5"
Aug
82°/ 63°
💧 10.0"
Sep
74°/ 56°
💧 10.0"
Oct
63°/ 45°
💧 10.4"
❄️ 1.6"
Nov
52°/ 36°
💧 9.7"
❄️ 1.4"
Dec
42°/ 26°
💧 9.6"
❄️ 2.0"

Temperatures in Fahrenheit. Precipitation and snowfall in inches.

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