Climateby Month

Quincy, MA weather in July

NOAA 1991-2020 normals and daily records · Quincy all year

July in Quincy: warm and often humid, with some rain. Highs 83°F, lows 63°F, rain on about 9 days. This is the peak of the warm season in Quincy.

Normal high
83°F
Normal low
63°F
Wet days
9
3.3 in total
Muggy days
10
dew point 65°F+

How July changes from start to finish

Normal values at the start and end of July
July 1July 31
Normal high82°F83°F
Normal low62°F64°F
Chance of a wet day32%31%
Sunrise / sunset5:11 am / 8:24 pm5:35 am / 8:04 pm
Daylight15.2 h14.5 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).

A typical July day

  1. 6 am70°Fdew point 62°F
  2. 9 am76°Fdew point 62°F
  3. Noon79°Fdew point 62°F
  4. 3 pm79°Fdew point 61°F
  5. 6 pm76°Fdew point 62°F
  6. 9 pm73°Fdew point 62°F

NOAA hourly normals (local standard time) from Boston Logan Intl Airport (8 mi away); average wind 10 mph; clear or few clouds in 24% of daytime hours, mostly cloudy or overcast in 49%.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F6 of 31
  • Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph13 of 31
  • Hot dayshigh 90°F or more6 of 31
  • Muggy daysdaily mean dew point 65°F or more10 of 31
  • Wet daysat least 0.01 in of rain or melted snow9 of 31
  • Notable rainat least 0.10 in6 of 31
  • Freezing nightslow 32°F or below0 of 31
  • Snow on the groundsnow depth 1 in or more0 of 31

Average days per July, counted from daily records for each year 1991-2020.

Rain in July

Normal precipitation is 3.3 in; a dry July brings about 2.0 in and a wet one about 4.4 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.

How July varies from year to year

  • Warmest July, 1991-20202010: average high 88°F
  • Coolest July1992: average high 77°F
  • Wettest July2009: 6.9 in
  • Driest July1997: 0.6 in
  • Highest reading101°F (July 22, 2011)
  • Lowest reading46°F (July 10, 2009)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

July compared with June and August

JuneJulyAugust
Normal high77°F83°F82°F
Normal low57°F63°F62°F
Wet days1199
Comfortable days1368
Daylight15.2 h14.9 h13.8 h

Highs change by +6°F from June and -1°F into August.

Nearby alternatives in July

How Quincy ranks in July

  • Normal high279th warmest of 378 cities; 4th of 9 in Massachusetts
  • Wet days195th driest of 378
  • Comfortable days101st most of 340

What to pack for Quincy in July

  • A rain jacket or umbrella – rain on about 9 days
  • A swimsuit – about 13 beach days
  • Sunglasses and sunscreen – about 14.9 hours of daylight and highs near 83°F

Heating and cooling

July has 5 heating degree days and 260 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.

Questions

How hot is Quincy in July?

The normal high is 83°F and the normal low is 63°F. From 1991 to 2020 the hottest July reading was 101°F (July 22, 2011).

Does it rain a lot in Quincy in July?

About 9 days in July have at least 0.01 in of precipitation, and the normal total is 3.3 in. The wettest July in 1991-2020 was in 2009 (6.9 in); the driest was in 1997 (0.6 in).

Is July a good time to visit Quincy?

July ranks 7th of 12 months on our comfort score for Quincy (58 out of 100). It has about 6 comfortable days and about 6 days at 90°F or hotter. The best months are May and June.

Where the numbers come from

  • Temperature, snow depth and frost dates: Hingham (USC00193624), 4.9 mi ESE of the city center, 35 ft . NOAA normals and daily records, 1991-2020.
  • Rain, snowfall, humidity and wind by hour and cloud cover: Boston Logan Intl Airport (USW00014739), 7.5 mi N of the city center, 12 ft . NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Gen E L Logan International Airport (725090-14739), 7.5 mi N of the city center, 11 ft . Hourly observations, 1991-2020.