July weather in Waltham, MA
The average temperature in Waltham in July is 73.6°F (62.0°F–85.1°F). Average precipitation: 3.51 inches.
July is a summer month in Waltham, and is warmer than the annual average of 50.5°F. Daily temperatures swing about 23.1°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 49m. For travel, July is a comfortable month to visit.
Avg High
85.1°F
Avg Low
62.0°F
Precipitation
3.51 in
Daylight
14h 49m
July records in Waltham
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 97.0°F (2018) | 48.0°F (1952) | 1.29 in (2021) |
| July 2 | 98.1°F (1963) | 44.1°F (1962) | 1.99 in (2009) |
| July 3 | 97.0°F (1966) | 43.0°F (1962) | 1.33 in (2021) |
| July 4 | 99.0°F (1949) | 43.0°F (1962) | 1.16 in (2014) |
| July 5 | 98.1°F (2010) | 46.9°F (1962) | 0.84 in (2024) |
| July 6 | 102.0°F (2010) | 43.0°F (1962) | 0.69 in (2005) |
| July 7 | 95.0°F (2010) | 42.1°F (1965) | 1.64 in (2009) |
| July 8 | 93.9°F (2024) | 46.0°F (1969) | 1.64 in (2005) |
| July 9 | 96.1°F (1955) | 48.0°F (1963) | 2.56 in (2021) |
| July 10 | 93.0°F (1955) | 46.9°F (2009) | 2.88 in (1955) |
| July 11 | 91.9°F (2024) | 48.9°F (2002) | 2.93 in (1959) |
| July 12 | 93.0°F (1966) | 46.0°F (2002) | 3.01 in (2017) |
| July 13 | 95.0°F (1966) | 51.1°F (1999) | 1.08 in (1953) |
| July 14 | 100.0°F (1952) | 48.9°F (1999) | 1.77 in (1960) |
| July 15 | 95.0°F (2016) | 50.0°F (1950) | 0.73 in (1959) |
| July 16 | 95.0°F (1999) | 48.0°F (1966) | 1.20 in (2014) |
| July 17 | 98.1°F (1999) | 48.9°F (1954) | 1.91 in (2018) |
| July 18 | 98.1°F (1999) | 48.9°F (1958) | 1.06 in (2021) |
| July 19 | 98.1°F (2013) | 50.0°F (1956) | 1.31 in (1951) |
| July 20 | 98.1°F (2019) | 48.9°F (1965) | 1.44 in (1959) |
| July 21 | 98.1°F (2019) | 46.0°F (1966) | 0.85 in (2008) |
| July 22 | 100.9°F (2011) | 46.9°F (2025) | 0.80 in (2019) |
| July 23 | 99.0°F (1952) | 51.1°F (2000) | 1.53 in (1953) |
| July 24 | 99.0°F (2022) | 51.1°F (2002) | 2.91 in (2004) |
| July 25 | 97.0°F (1963) | 46.9°F (2002) | 1.40 in (2013) |
| July 26 | 97.0°F (1963) | 48.0°F (2002) | 1.32 in (2018) |
| July 27 | 97.0°F (1949) | 52.0°F (1962) | 1.40 in (2014) |
| July 28 | 100.0°F (1949) | 52.0°F (1965) | 1.59 in (2006) |
| July 29 | 98.1°F (1949) | 50.0°F (1968) | 1.42 in (1969) |
| July 30 | 100.0°F (1949) | 45.0°F (1968) | 1.52 in (1960) |
| July 31 | 95.0°F (1954) | 46.0°F (2001) | 1.78 in (2025) |