July weather in Derby, CT
The average temperature in Derby in July is 72.6°F (63.1°F–82.0°F). Average precipitation: 4.30 inches.
July is a summer month in Derby, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 18.9°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 14h 42m. For travel, July is a comfortable month to visit.
Avg High
82.0°F
Avg Low
63.1°F
Precipitation
4.30 in
Daylight
14h 42m
July records in Derby
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 91.0°F (2012) | 52.0°F (2011) | 1.80 in (1998) |
| July 2 | 95.0°F (2018) | 54.0°F (2015) | 0.92 in (1986) |
| July 3 | 90.0°F (2018) | 55.0°F (2015) | 1.60 in (2021) |
| July 4 | 91.9°F (2018) | 57.0°F (2016) | 1.40 in (2014) |
| July 5 | 90.0°F (2013) | 57.0°F (2014) | 5.76 in (2023) |
| July 6 | 91.0°F (2013) | 60.1°F (2017) | 1.01 in (1973) |
| July 7 | 90.0°F (2011) | 55.0°F (2018) | 0.91 in (1984) |
| July 8 | 91.0°F (2012) | 52.0°F (2018) | 1.21 in (1984) |
| July 9 | 91.0°F (2013) | 57.0°F (2018) | 2.11 in (2011) |
| July 10 | 90.0°F (2013) | 57.9°F (2011) | 2.67 in (2021) |
| July 11 | 97.0°F (2018) | 59.0°F (2017) | 1.42 in (1989) |
| July 12 | 90.0°F (2011) | 59.0°F (2018) | 0.86 in (1975) |
| July 13 | 90.0°F (2011) | 60.1°F (2018) | 2.05 in (1990) |
| July 14 | 84.9°F (2011) | 57.9°F (2011) | 5.80 in (2018) |
| July 15 | 90.0°F (2016) | 57.9°F (2015) | 2.06 in (1975) |
| July 16 | 88.0°F (2016) | 52.0°F (2015) | 4.15 in (2000) |
| July 17 | 90.0°F (2013) | 52.0°F (2015) | 1.95 in (2018) |
| July 18 | 93.0°F (2013) | 50.0°F (2017) | 1.28 in (1979) |
| July 19 | 91.9°F (2013) | 55.9°F (2014) | 1.34 in (1988) |
| July 20 | 95.0°F (2013) | 60.1°F (2014) | 1.85 in (2002) |
| July 21 | 93.0°F (2013) | 57.0°F (2014) | 1.14 in (1982) |
| July 22 | 91.9°F (2011) | 55.9°F (2015) | 1.06 in (1997) |
| July 23 | 99.0°F (2011) | 53.1°F (2017) | 1.90 in (1988) |
| July 24 | 91.9°F (2011) | 55.9°F (2015) | 1.10 in (1988) |
| July 25 | 90.0°F (2016) | 57.0°F (2017) | 0.79 in (1997) |
| July 26 | 93.9°F (2016) | 55.0°F (2017) | 1.73 in (2013) |
| July 27 | 87.1°F (2011) | 55.0°F (2017) | 1.98 in (2000) |
| July 28 | 89.1°F (2016) | 50.0°F (2017) | 1.82 in (1994) |
| July 29 | 91.0°F (2016) | 60.1°F (2011) | 2.10 in (2007) |
| July 30 | 91.9°F (2015) | 54.0°F (2014) | 2.16 in (1980) |
| July 31 | 88.0°F (2011) | 55.0°F (2014) | 3.10 in (1986) |