Boston Weather in July
Average highs run from 76°F on July 1 to 77°F on July 31, and lows from 58°F to 59°F. Normal precipitation for the month is 4.38 in over about 13 wet days.
July day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 77°F
- Average low
- 59°F
- Precipitation
- 4.38 in
- Record high
- 98°FJul 9, 2020
- Record low
- 43°FJul 11, 1945
- Chance of a freeze
- 0%
- Daylight
- 15 h 16 min to 14 h 30 min
- Cloud cover
- 59%
- Humidity
- 75%
- Dew point
- 60°F
- Wind
- 4.5 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jul 1 | 76°F | 58°F | 93°F 1963 | 47°F 1940 | 42% | 0% |
| Jul 2 | 77°F | 58°F | 94°F 1966 | 46°F 2001 | 42% | 0% |
| Jul 3 | 77°F | 59°F | 94°F 1949 | 48°F 1995 | 42% | 0% |
| Jul 4 | 77°F | 59°F | 93°F 2018 | 47°F 1940 | 42% | 0% |
| Jul 5 | 77°F | 59°F | 95°F 1988 | 47°F 1961 | 42% | 0% |
| Jul 6 | 77°F | 59°F | 97°F 1988 | 47°F 1963 | 41% | 0% |
| Jul 7 | 77°F | 59°F | 94°F 1939 | 48°F 1942 | 41% | 0% |
| Jul 8 | 77°F | 59°F | 96°F 1988 | 47°F 1984 | 41% | 0% |
| Jul 9 | 77°F | 59°F | 98°F 2020 | 47°F 1963 | 41% | 0% |
| Jul 10 | 77°F | 59°F | 97°F 2020 | 50°F 1962 | 41% | 0% |
| Jul 11 | 77°F | 59°F | 94°F 1944 | 43°F 1945 | 41% | 0% |
| Jul 12 | 78°F | 59°F | 94°F 2005 | 50°F 1940 | 41% | 0% |
| Jul 13 | 78°F | 60°F | 94°F 2005 | 45°F 1940 | 41% | 0% |
| Jul 14 | 78°F | 60°F | 92°F 2005 | 47°F 1940 | 42% | 0% |
| Jul 15 | 78°F | 60°F | 97°F 1995 | 48°F 1939 | 42% | 0% |
| Jul 16 | 78°F | 60°F | 93°F 1982 | 50°F 1946 | 42% | 0% |
| Jul 17 | 78°F | 60°F | 94°F 1953 | 48°F 1939 | 42% | 0% |
| Jul 18 | 78°F | 60°F | 94°F 1968 | 51°F 1971 | 42% | 0% |
| Jul 19 | 78°F | 60°F | 91°F 1978 | 51°F 1939 | 42% | 0% |
| Jul 20 | 78°F | 60°F | 91°F 1978 | 46°F 1965 | 42% | 0% |
| Jul 21 | 78°F | 60°F | 93°F 1953 | 48°F 1965 | 43% | 0% |
| Jul 22 | 78°F | 60°F | 95°F 2011 | 49°F 1992 | 43% | 0% |
| Jul 23 | 78°F | 60°F | 91°F 2016 | 48°F 1981 | 43% | 0% |
| Jul 24 | 78°F | 60°F | 91°F 1945 | 49°F 1962 | 43% | 0% |
| Jul 25 | 77°F | 60°F | 93°F 1939 | 48°F 1953 | 43% | 0% |
| Jul 26 | 77°F | 60°F | 92°F 1941 | 50°F 1975 | 43% | 0% |
| Jul 27 | 77°F | 60°F | 95°F 1941 | 48°F 1977 | 44% | 0% |
| Jul 28 | 77°F | 60°F | 93°F 1964 | 51°F 1996 | 44% | 0% |
| Jul 29 | 77°F | 60°F | 94°F 1955 | 52°F 1989 | 44% | 0% |
| Jul 30 | 77°F | 59°F | 93°F 1955 | 47°F 1968 | 44% | 0% |
| Jul 31 | 77°F | 59°F | 92°F 1955 | 49°F 1963 | 44% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- July 1
- sunrise 5:41 AM, sunset 8:57 PM
- July 31
- sunrise 6:06 AM, sunset 8:36 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00301625 (Colden 1W), public domain. Records: NOAA GHCN-Daily, station USW00014733, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.