October weather in Longmont, CO
The average temperature in Longmont in October is 49.5°F (32.9°F–66.2°F). Average precipitation: 1.04 inches.
October is a fall month in Longmont, and is cooler than the annual average of 50°F. Daily temperatures swing about 33.3°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 10h 54m. For travel, October is cool.
Avg High
66.2°F
Avg Low
32.9°F
Precipitation
1.04 in
Daylight
10h 54m
October records in Longmont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 90.0°F (1980) | 21.9°F (1985) | 1.06 in (1893) |
| October 2 | 88.0°F (1953) | 26.1°F (1961) | 0.66 in (2017) |
| October 3 | 89.1°F (1925) | 27.0°F (1959) | 1.15 in (1895) |
| October 4 | 91.0°F (1922) | 21.9°F (1999) | 1.68 in (1969) |
| October 5 | 89.1°F (1947) | 25.0°F (1969) | 1.05 in (1984) |
| October 6 | 89.1°F (1993) | 23.0°F (1995) | 1.35 in (1951) |
| October 7 | 91.0°F (1934) | 19.9°F (1948) | 0.24 in (1970) |
| October 8 | 88.0°F (1979) | 19.9°F (1992) | 0.29 in (1924) |
| October 9 | 86.0°F (1915) | 19.9°F (1909) | 0.49 in (1968) |
| October 10 | 88.0°F (1926) | 21.9°F (2019) | 0.43 in (1925) |
| October 11 | 87.1°F (1962) | 15.1°F (2019) | 1.15 in (1969) |
| October 12 | 90.0°F (1996) | 15.1°F (2019) | 0.76 in (1974) |
| October 13 | 87.1°F (1950) | 0.0°F (1969) | 1.08 in (1925) |
| October 14 | 86.0°F (1950) | 1.9°F (1969) | 2.80 in (1916) |
| October 15 | 86.0°F (1926) | 6.1°F (1969) | 1.80 in (1947) |
| October 16 | 86.0°F (1995) | 14.0°F (2018) | 1.10 in (1942) |
| October 17 | 91.9°F (1926) | 1.9°F (1948) | 0.94 in (1942) |
| October 18 | 86.0°F (1921) | 15.1°F (1916) | 0.84 in (1993) |
| October 19 | 86.0°F (2003) | 15.1°F (1968) | 0.73 in (1960) |
| October 20 | 88.0°F (2003) | 16.0°F (1911) | 0.47 in (1912) |
| October 21 | 84.9°F (1921) | 16.0°F (1990) | 0.36 in (1945) |
| October 22 | 84.9°F (2003) | 12.9°F (1996) | 1.84 in (1978) |
| October 23 | 86.0°F (2003) | 16.0°F (1920) | 1.00 in (1914) |
| October 24 | 84.0°F (2003) | 8.1°F (1942) | 1.54 in (1923) |
| October 25 | 89.1°F (1926) | 10.0°F (1942) | 0.63 in (1997) |
| October 26 | 84.9°F (2017) | 1.0°F (1997) | 0.62 in (2020) |
| October 27 | 82.0°F (1926) | 1.9°F (2020) | 0.61 in (1976) |
| October 28 | 81.0°F (1933) | -5.1°F (1917) | 0.94 in (1998) |
| October 29 | 82.0°F (1924) | 6.1°F (1917) | 0.67 in (1959) |
| October 30 | 84.9°F (1968) | 3.9°F (2019) | 0.77 in (1912) |
| October 31 | 78.1°F (1968) | 3.0°F (1991) | 0.46 in (1987) |