October weather in Johnston, IA
The average temperature in Johnston in October is 52.8°F (42.5°F–63.1°F). Average precipitation: 2.51 inches. Average snowfall is 0.5 inches.
October is a fall month in Johnston, and is warmer than the annual average of 50.3°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 10h 51m. For travel, October is a comfortable month to visit.
Avg High
63.1°F
Avg Low
42.5°F
Precipitation
2.51 in
Snow
0.5 in
October records in Johnston
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 91.0°F (2023) | 30.9°F (2003) | 1.21 in (2019) |
| October 2 | 88.0°F (1997) | 28.0°F (2004) | 1.32 in (2007) |
| October 3 | 93.0°F (1997) | 32.0°F (1999) | 0.36 in (2013) |
| October 4 | 88.0°F (2005) | 28.0°F (1999) | 1.55 in (2013) |
| October 5 | 91.9°F (2024) | 30.9°F (2012) | 0.77 in (2019) |
| October 6 | 89.1°F (1997) | 24.1°F (2012) | 1.54 in (2017) |
| October 7 | 84.9°F (1997) | 21.0°F (2012) | 0.75 in (2018) |
| October 8 | 84.9°F (2010) | 19.0°F (2000) | 0.81 in (2007) |
| October 9 | 86.0°F (2020) | 23.0°F (2000) | 0.65 in (2014) |
| October 10 | 84.0°F (2024) | 28.0°F (2009) | 0.97 in (2019) |
| October 11 | 86.0°F (2024) | 26.1°F (2009) | 0.24 in (2003) |
| October 12 | 86.0°F (1999) | 27.0°F (2006) | 2.02 in (1997) |
| October 13 | 80.1°F (2000) | 28.0°F (2002) | 1.35 in (2014) |
| October 14 | 84.0°F (2005) | 26.1°F (2006) | 2.53 in (2007) |
| October 15 | 84.0°F (1999) | 28.9°F (2022) | 0.60 in (2008) |
| October 16 | 80.1°F (2025) | 26.1°F (2002) | 0.27 in (2006) |
| October 17 | 84.9°F (2016) | 27.0°F (2022) | 0.63 in (1998) |
| October 18 | 82.9°F (2005) | 17.1°F (2022) | 0.54 in (2012) |
| October 19 | 84.9°F (2003) | 18.0°F (2022) | 0.32 in (2019) |
| October 20 | 87.1°F (2003) | 26.1°F (2002) | 0.91 in (2019) |
| October 21 | 82.0°F (2024) | 27.0°F (1997) | 0.61 in (2019) |
| October 22 | 82.9°F (2022) | 26.1°F (1997) | 2.36 in (2009) |
| October 23 | 82.9°F (2022) | 21.9°F (2006) | 0.59 in (1997) |
| October 24 | 77.0°F (2000) | 23.0°F (1999) | 2.80 in (2021) |
| October 25 | 77.0°F (2011) | 27.0°F (2020) | 0.34 in (2000) |
| October 26 | 75.9°F (1996) | 23.0°F (2001) | 0.83 in (1997) |
| October 27 | 81.0°F (1999) | 16.0°F (1997) | 1.17 in (2023) |
| October 28 | 79.0°F (2016) | 21.9°F (2008) | 1.09 in (2021) |
| October 29 | 82.9°F (2024) | 24.1°F (2019) | 1.80 in (2009) |
| October 30 | 75.0°F (2024) | 24.1°F (2023) | 1.49 in (2024) |
| October 31 | 72.0°F (2000) | 21.0°F (2002) | 0.49 in (1995) |