Boston Weather in July
Average highs run from 91°F on July 1 to 91°F on July 31, and lows from 71°F to 71°F. Normal precipitation for the month is 7.49 in over about 15 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
- 91°F
- Average low
- 71°F
- Precipitation
- 7.49 in
- Record high
- 105°FJul 21, 1942
- Record low
- 59°FJul 9, 1972
- Chance of a freeze
- 0%
- Days of 90°F or more
- 22.3
- Daylight
- 14 h 06 min to 13 h 39 min
- Cloud cover
- 55%
- Humidity
- 77%
- Dew point
- 72°F
- Wind
- 5.6 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Jul 1 | 91°F | 71°F | 102°F 1990 | 60°F 1958 | 44% |
| Jul 2 | 91°F | 71°F | 101°F 1990 | 64°F 1975 | 45% |
| Jul 3 | 91°F | 71°F | 102°F 1931 | 61°F 1965 | 45% |
| Jul 4 | 91°F | 71°F | 100°F 1936 | 62°F 1974 | 45% |
| Jul 5 | 91°F | 71°F | 99°F 1979 | 64°F 1959 | 46% |
| Jul 6 | 91°F | 71°F | 102°F 1931 | 62°F 1947 | 46% |
| Jul 7 | 91°F | 71°F | 103°F 1990 | 62°F 1968 | 46% |
| Jul 8 | 91°F | 71°F | 103°F 1990 | 60°F 2006 | 46% |
| Jul 9 | 91°F | 71°F | 101°F 1990 | 59°F 1972 | 47% |
| Jul 10 | 91°F | 71°F | 101°F 1930 | 62°F 2006 | 47% |
| Jul 11 | 91°F | 71°F | 103°F 1930 | 61°F 1962 | 47% |
| Jul 12 | 91°F | 71°F | 100°F 1932 | 62°F 1956 | 47% |
| Jul 13 | 91°F | 71°F | 103°F 1980 | 61°F 1963 | 48% |
| Jul 14 | 91°F | 71°F | 101°F 1932 | 60°F 1963 | 48% |
| Jul 15 | 91°F | 71°F | 101°F 1951 | 60°F 1967 | 48% |
| Jul 16 | 91°F | 71°F | 104°F 1951 | 61°F 1967 | 48% |
| Jul 17 | 91°F | 71°F | 102°F 1981 | 62°F 2006 | 48% |
| Jul 18 | 91°F | 71°F | 101°F 1981 | 62°F 1962 | 48% |
| Jul 19 | 91°F | 71°F | 101°F 1986 | 62°F 1987 | 48% |
| Jul 20 | 91°F | 71°F | 104°F 1986 | 63°F 2009 | 48% |
| Jul 21 | 91°F | 71°F | 105°F 1942 | 61°F 1961 | 48% |
| Jul 22 | 91°F | 71°F | 101°F 1932 | 62°F 1968 | 48% |
| Jul 23 | 91°F | 71°F | 102°F 1943 | 64°F 1929 | 48% |
| Jul 24 | 91°F | 71°F | 101°F 1952 | 63°F 1947 | 48% |
| Jul 25 | 91°F | 71°F | 101°F 1952 | 64°F 1965 | 48% |
| Jul 26 | 91°F | 71°F | 101°F 1977 | 66°F 1932 | 48% |
| Jul 27 | 91°F | 71°F | 99°F 1936 | 65°F 1932 | 48% |
| Jul 28 | 91°F | 71°F | 99°F 2006 | 65°F 1961 | 48% |
| Jul 29 | 91°F | 71°F | 100°F 1949 | 62°F 1933 | 48% |
| Jul 30 | 91°F | 71°F | 100°F 1986 | 64°F 1954 | 48% |
| Jul 31 | 91°F | 71°F | 101°F 1990 | 66°F 1933 | 47% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- July 1
- sunrise 6:36 AM, sunset 8:42 PM
- July 31
- sunrise 6:52 AM, sunset 8:31 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00085879 (Monticello 5 Se), public domain. Records: NOAA GHCN-Daily, station USC00096087, 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.