March weather in Johnston, IA
The average temperature in Johnston in March is 38.7°F (28.8°F–48.6°F). Average precipitation: 2.15 inches. Average snowfall is 5.0 inches.
March is a spring month in Johnston, and is cooler than the annual average of 50.3°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 11h 43m. For travel, March is cool.
Avg High
48.6°F
Avg Low
28.8°F
Precipitation
2.15 in
Snow
5.0 in
March records in Johnston
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 63.0°F (2022) | -2.9°F (2014) | 0.88 in (2007) |
| March 2 | 70.0°F (2022) | -9.9°F (2014) | 0.54 in (2008) |
| March 3 | 77.0°F (2024) | -11.9°F (2014) | 0.04 in (2003) |
| March 4 | 69.1°F (2000) | -8.0°F (2019) | 1.41 in (2025) |
| March 5 | 71.1°F (2000) | -2.9°F (2015) | 0.50 in (2022) |
| March 6 | 73.0°F (2000) | 1.0°F (1996) | 1.37 in (2026) |
| March 7 | 77.0°F (2000) | -6.0°F (1996) | 0.95 in (2009) |
| March 8 | 73.0°F (2016) | -5.1°F (1996) | 1.08 in (2009) |
| March 9 | 73.0°F (2021) | 0.0°F (2003) | 0.62 in (2019) |
| March 10 | 78.1°F (2025) | -2.9°F (1998) | 0.61 in (2013) |
| March 11 | 73.9°F (2024) | -2.9°F (1998) | 0.67 in (2023) |
| March 12 | 71.1°F (2015) | -8.0°F (1998) | 0.50 in (2019) |
| March 13 | 78.1°F (2007) | 10.9°F (2005) | 0.38 in (2019) |
| March 14 | 80.1°F (2025) | 10.0°F (2017) | 0.68 in (2021) |
| March 15 | 78.1°F (2012) | 8.1°F (2017) | 0.77 in (2004) |
| March 16 | 82.9°F (2015) | 7.0°F (2026) | 0.51 in (2018) |
| March 17 | 80.1°F (2012) | 6.1°F (2026) | 0.48 in (2018) |
| March 18 | 80.1°F (2012) | 8.1°F (2023) | 0.86 in (2020) |
| March 19 | 78.1°F (2012) | 10.0°F (2023) | 0.94 in (2020) |
| March 20 | 80.1°F (2026) | 12.9°F (2013) | 0.20 in (2012) |
| March 21 | 91.9°F (2026) | 10.0°F (2013) | 0.62 in (2007) |
| March 22 | 73.9°F (2026) | 10.0°F (2002) | 0.71 in (2022) |
| March 23 | 73.9°F (2003) | 14.0°F (2014) | 1.22 in (2009) |
| March 24 | 75.0°F (2004) | 19.0°F (2001) | 0.93 in (2024) |
| March 25 | 82.0°F (2007) | 10.9°F (1996) | 0.62 in (2017) |
| March 26 | 79.0°F (2007) | 8.1°F (1996) | 0.52 in (2018) |
| March 27 | 79.0°F (2012) | 15.1°F (2001) | 0.91 in (2004) |
| March 28 | 81.0°F (2025) | 21.9°F (2000) | 0.28 in (1999) |
| March 29 | 79.0°F (1998) | 23.0°F (2023) | 1.48 in (2017) |
| March 30 | 88.0°F (2026) | 21.9°F (2003) | 1.91 in (1998) |
| March 31 | 79.0°F (2023) | 21.0°F (2019) | 0.68 in (2007) |