Longmont, Sunday, 9 August, 02:35
Partly cloudy. Feels like 70°. High 97°, low 69°.
In March, Longmont, CO averages a high of 50.4° and a low of 24.7°. About 1.8 inches of precipitation fall over the month (8 wet days). The record high is 79.7° (2012) and the record low -14.3° (1965). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 47.3° | 21.2° | 17% | 65.3° (1986) | -8.1° (1962) |
| 2 | 45.9° | 21.4° | 18% | 70.5° (2009) | -13.5° (2002) |
| 3 | 46.8° | 21.2° | 25% | 69.1° (2009) | -10.1° (1965) |
| 4 | 45.3° | 21.7° | 37% | 70.7° (2009) | -5.3° (2019) |
| 5 | 46.4° | 20.7° | 27% | 64.4° (1987) | -9.4° (1989) |
| 6 | 48.7° | 21.4° | 25% | 68° (1972) | 1.6° (1961) |
| 7 | 46.4° | 22.5° | 32% | 63.3° (2021) | -4.4° (1995) |
| 8 | 48° | 22.1° | 23% | 66° (1986) | -5.3° (1998) |
| 9 | 49.8° | 22.8° | 20% | 68.9° (1972) | -9.8° (1969) |
| 10 | 49.8° | 23.4° | 23% | 70.2° (1989) | -1.8° (2022) |
| 11 | 50.5° | 23.5° | 23% | 68.9° (1972) | -8.1° (1969) |
| 12 | 50° | 24.4° | 18% | 68.2° (2007) | -2.7° (1969) |
| 13 | 51.4° | 24.6° | 22% | 71.2° (2007) | -4.7° (1962) |
| 14 | 50.7° | 24.8° | 23% | 69.8° (2003) | -3.3° (1962) |
| 15 | 50° | 24.6° | 27% | 73.8° (2017) | -6.2° (1969) |
| 16 | 52.3° | 24.8° | 23% | 74.8° (2015) | 6.4° (1962) |
| 17 | 51.8° | 27.1° | 25% | 71.2° (2012) | 6.6° (2002) |
| 18 | 50.2° | 26.1° | 33% | 78.6° (2017) | -6° (1965) |
| 19 | 50.5° | 25.9° | 23% | 75.4° (2017) | -1.7° (1965) |
| 20 | 51.3° | 24.4° | 23% | 77° (2017) | -14.3° (1965) |
| 21 | 52.9° | 25.2° | 18% | 72.9° (2009) | 0.1° (1983) |
| 22 | 52.3° | 26.8° | 28% | 73.9° (2017) | 8.4° (1983) |
| 23 | 53.1° | 27° | 25% | 73.9° (2012) | 4.3° (2006) |
| 24 | 51.4° | 27.3° | 25% | 71.4° (2012) | -4.7° (1974) |
| 25 | 52° | 25.5° | 27% | 71.8° (2012) | -6.3° (1996) |
| 26 | 54.3° | 26.6° | 27% | 74.7° (2012) | -7.8° (1996) |
| 27 | 52.7° | 27.7° | 33% | 77.5° (2025) | 8.1° (1996) |
| 28 | 52.3° | 27.3° | 32% | 74.7° (2025) | 2.8° (1975) |
| 29 | 50.7° | 27.9° | 40% | 73.6° (1967) | 1.4° (1972) |
| 30 | 52.7° | 27° | 33% | 73.9° (2012) | 2.7° (1987) |
| 31 | 54.1° | 27.9° | 28% | 79.7° (2012) | 8.2° (2009) |