March weather in Johnstown, CO
The average temperature in Johnstown in March is 39.5°F (23.0°F–56.1°F). Average precipitation: 1.28 inches. Average snowfall is 7.9 inches.
March is a spring month in Johnstown, and is cooler than the annual average of 48.7°F. Daily temperatures swing about 33.1°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 11h 44m. For travel, March is cool.
Avg High
56.1°F
Avg Low
23.0°F
Precipitation
1.28 in
Snow
7.9 in
March records in Johnstown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| March 1 | 72.0°F (2006) | 1.9°F (2015) | 0.12 in (2007) |
| March 2 | 75.0°F (2008) | 3.9°F (2014) | 0.18 in (2019) |
| March 3 | 72.0°F (2009) | -0.9°F (2019) | 0.19 in (2019) |
| March 4 | 75.0°F (2009) | -11.9°F (2019) | 1.16 in (1992) |
| March 5 | 73.9°F (2009) | -13.0°F (2019) | 0.92 in (1990) |
| March 6 | 69.1°F (2026) | -5.1°F (2019) | 2.10 in (1990) |
| March 7 | 72.0°F (2012) | 8.1°F (2022) | 0.18 in (2026) |
| March 8 | 71.1°F (2020) | 1.9°F (1998) | 0.62 in (2014) |
| March 9 | 73.0°F (2026) | 6.1°F (1994) | 0.43 in (2006) |
| March 10 | 75.0°F (1995) | 1.9°F (2022) | 0.33 in (2013) |
| March 11 | 75.0°F (1995) | -0.9°F (2022) | 0.39 in (1993) |
| March 12 | 73.0°F (2016) | -0.9°F (2022) | 0.40 in (1999) |
| March 13 | 75.0°F (2007) | 9.0°F (1993) | 0.55 in (1996) |
| March 14 | 77.0°F (2007) | 8.1°F (1990) | 1.80 in (2021) |
| March 15 | 73.0°F (2012) | 8.1°F (2005) | 1.79 in (2021) |
| March 16 | 81.0°F (2015) | 10.0°F (2005) | 0.28 in (2018) |
| March 17 | 82.9°F (2015) | 10.9°F (2021) | 0.48 in (2008) |
| March 18 | 77.0°F (2007) | 12.0°F (2021) | 1.63 in (2003) |
| March 19 | 84.9°F (2026) | 10.0°F (2023) | 1.54 in (2003) |
| March 20 | 87.1°F (2026) | 3.0°F (2010) | 1.18 in (2020) |
| March 21 | 89.1°F (2026) | 3.0°F (2010) | 0.14 in (2005) |
| March 22 | 91.0°F (2026) | 9.0°F (2020) | 0.26 in (2021) |
| March 23 | 80.1°F (2004) | 10.0°F (2008) | 1.34 in (2016) |
| March 24 | 78.1°F (1998) | -2.9°F (2013) | 1.55 in (2010) |
| March 25 | 84.9°F (2026) | -2.9°F (2013) | 0.54 in (2007) |
| March 26 | 91.9°F (2026) | 6.1°F (1996) | 0.12 in (1994) |
| March 27 | 80.1°F (2012) | 7.0°F (2013) | 1.07 in (2009) |
| March 28 | 82.9°F (2025) | 7.0°F (2009) | 0.42 in (1992) |
| March 29 | 82.0°F (2015) | 3.0°F (2023) | 0.48 in (2025) |
| March 30 | 84.0°F (2026) | 12.0°F (1995) | 0.70 in (2025) |
| March 31 | 82.0°F (2026) | 17.1°F (1998) | 0.12 in (2008) |