August weather in Portage, IN
The average temperature in Portage in August is 71.6°F (63.1°F–80.0°F). Average precipitation: 4.08 inches.
August is a summer month in Portage, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 16.9°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 41m. For travel, August is a comfortable month to visit.
Avg High
80.0°F
Avg Low
63.1°F
Precipitation
4.08 in
Daylight
13h 41m
August records in Portage
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 93.9°F (2006) | 53.1°F (1990) | 1.36 in (1999) |
| August 2 | 93.0°F (2002) | 55.0°F (1996) | 0.28 in (1994) |
| August 3 | 98.1°F (1991) | 55.9°F (1990) | 1.82 in (2006) |
| August 4 | 93.0°F (2005) | 54.0°F (2017) | 2.30 in (2008) |
| August 5 | 91.9°F (2012) | 50.0°F (1993) | 1.21 in (1998) |
| August 6 | 91.9°F (2018) | 51.1°F (1994) | 1.53 in (2023) |
| August 7 | 91.9°F (2018) | 50.0°F (1990) | 1.44 in (2000) |
| August 8 | 93.9°F (2001) | 50.0°F (1989) | 1.33 in (1991) |
| August 9 | 93.9°F (2001) | 53.1°F (1990) | 0.39 in (1991) |
| August 10 | 93.9°F (2001) | 52.0°F (1994) | 0.61 in (2012) |
| August 11 | 93.9°F (2025) | 53.1°F (2024) | 0.76 in (1994) |
| August 12 | 91.9°F (2002) | 48.0°F (2004) | 0.90 in (1997) |
| August 13 | 93.9°F (1995) | 51.1°F (2004) | 1.40 in (2016) |
| August 14 | 93.9°F (1995) | 50.0°F (2004) | 1.04 in (2011) |
| August 15 | 91.9°F (1995) | 46.0°F (2014) | 1.01 in (2023) |
| August 16 | 93.0°F (2025) | 52.0°F (2004) | 2.07 in (2016) |
| August 17 | 95.0°F (2025) | 50.0°F (1992) | 1.67 in (1997) |
| August 18 | 86.0°F (2009) | 48.9°F (2012) | 7.76 in (1990) |
| August 19 | 88.0°F (2025) | 52.0°F (2020) | 1.83 in (2016) |
| August 20 | 88.0°F (1990) | 48.0°F (1992) | 2.05 in (2007) |
| August 21 | 90.0°F (2010) | 48.9°F (2024) | 3.01 in (2018) |
| August 22 | 93.9°F (2003) | 50.0°F (2004) | 3.69 in (2014) |
| August 23 | 89.1°F (2007) | 50.0°F (1997) | 1.32 in (2007) |
| August 24 | 93.9°F (2023) | 53.1°F (2017) | 1.44 in (2007) |
| August 25 | 96.1°F (2021) | 48.9°F (2017) | 2.39 in (2021) |
| August 26 | 91.0°F (2003) | 52.0°F (2017) | 1.61 in (2004) |
| August 27 | 91.9°F (1993) | 45.0°F (2025) | 1.57 in (2016) |
| August 28 | 95.0°F (2024) | 53.1°F (2023) | 1.53 in (2009) |
| August 29 | 91.9°F (1990) | 48.0°F (2025) | 1.94 in (2006) |
| August 30 | 91.9°F (2010) | 50.0°F (2004) | 1.68 in (1993) |
| August 31 | 93.9°F (2013) | 50.0°F (2023) | 0.71 in (2014) |