October weather in Groton, CT

The average temperature in Groton in October is 54.4°F (45.6°F–63.2°F). Average precipitation: 3.66 inches.

October is a fall month in Groton, and is warmer than the annual average of 51.4°F. Daily temperatures swing about 17.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 10h 52m. For travel, October is a comfortable month to visit.

Avg High
63.2°F
Avg Low
45.6°F
Precipitation
3.66 in
Daylight
10h 52m

October records in Groton

Date Record High Record Low Record Precip
October 1 79.0°F (2013) 41.0°F (2009) 0.90 in (2001)
October 2 87.1°F (2019) 39.0°F (2009) 0.94 in (2015)
October 3 75.9°F (2013) 37.0°F (2003) 1.19 in (2009)
October 4 84.0°F (2023) 37.9°F (2008) 0.94 in (2021)
October 5 78.1°F (2002) 37.9°F (2004) 0.61 in (2022)
October 6 78.1°F (2017) 34.0°F (2003) 0.53 in (2010)
October 7 77.0°F (2007) 34.0°F (2003) 0.88 in (2024)
October 8 80.1°F (2007) 34.0°F (2001) 1.39 in (2005)
October 9 86.0°F (2011) 30.0°F (2001) 0.91 in (2019)
October 10 86.0°F (2011) 33.1°F (2025) 0.31 in (2019)
October 11 75.9°F (2017) 36.0°F (2009) 1.00 in (2005)
October 12 73.9°F (2024) 34.0°F (2009) 1.14 in (2025)
October 13 71.1°F (2003) 27.1°F (2012) 0.87 in (2020)
October 14 79.0°F (2021) 34.0°F (2006) 4.64 in (2005)
October 15 75.9°F (2000) 34.0°F (2002) 2.16 in (2005)
October 16 72.0°F (2021) 34.0°F (2006) 2.84 in (2019)
October 17 75.0°F (2016) 34.0°F (2012) 0.72 in (2020)
October 18 73.9°F (2016) 28.2°F (2015) 0.67 in (2009)
October 19 77.0°F (2016) 24.3°F (2015) 1.25 in (2011)
October 20 72.0°F (2017) 30.2°F (2009) 1.98 in (2012)
October 21 75.0°F (2016) 32.0°F (2008) 0.59 in (2023)
October 22 73.0°F (2024) 32.0°F (2002) 0.53 in (2016)
October 23 72.0°F (2007) 31.1°F (2008) 0.20 in (2022)
October 24 73.9°F (2024) 28.0°F (2002) 1.14 in (2009)
October 25 73.9°F (2022) 26.1°F (2003) 1.33 in (2021)
October 26 72.0°F (2023) 28.2°F (2013) 1.97 in (2021)
October 27 70.0°F (2000) 29.1°F (2006) 2.47 in (2019)
October 28 75.0°F (2023) 29.1°F (2013) 2.81 in (2006)
October 29 70.0°F (2015) 28.0°F (2001) 2.58 in (2017)
October 30 79.0°F (2023) 27.1°F (2020) 0.90 in (2016)
October 31 73.0°F (2024) 26.2°F (2020) 0.45 in (2021)

Other months in Groton