September weather in Hayden, CO
The average temperature in Hayden in September is 57.9°F (40.4°F–75.3°F). Average precipitation: 1.67 inches. Average snowfall is 0.2 inches.
September is a fall month in Hayden, and is warmer than the annual average of 43.7°F. Daily temperatures swing about 34.9°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
75.3°F
Avg Low
40.4°F
Precipitation
1.67 in
Snow
0.2 in
September records in Hayden
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (1983) | 28.0°F (1926) | 0.44 in (2008) |
| September 2 | 91.9°F (1916) | 27.0°F (1959) | 0.97 in (1929) |
| September 3 | 91.9°F (1948) | 25.0°F (1971) | 0.48 in (1915) |
| September 4 | 93.9°F (2022) | 30.0°F (1962) | 0.70 in (2004) |
| September 5 | 93.9°F (1978) | 26.1°F (1953) | 0.94 in (2004) |
| September 6 | 91.9°F (1978) | 25.0°F (1943) | 1.23 in (1939) |
| September 7 | 93.9°F (2022) | 30.0°F (1948) | 1.10 in (1929) |
| September 8 | 91.0°F (2022) | 25.0°F (1923) | 1.08 in (1929) |
| September 9 | 89.1°F (1979) | 15.1°F (1962) | 0.89 in (2019) |
| September 10 | 89.1°F (2021) | 18.0°F (1962) | 0.75 in (1936) |
| September 11 | 87.1°F (1958) | 25.0°F (1957) | 0.64 in (1988) |
| September 12 | 89.1°F (1990) | 23.0°F (1951) | 0.94 in (1988) |
| September 13 | 90.0°F (1990) | 24.1°F (1951) | 1.98 in (1914) |
| September 14 | 89.1°F (1948) | 25.0°F (1914) | 0.49 in (1994) |
| September 15 | 89.1°F (1990) | 25.0°F (1934) | 0.34 in (1958) |
| September 16 | 89.1°F (2000) | 23.0°F (1971) | 1.72 in (2006) |
| September 17 | 86.0°F (1929) | 25.0°F (2006) | 1.20 in (2007) |
| September 18 | 87.1°F (1937) | 21.0°F (1949) | 0.50 in (1965) |
| September 19 | 87.1°F (1920) | 19.0°F (1971) | 1.84 in (1997) |
| September 20 | 89.1°F (1948) | 19.0°F (1983) | 1.54 in (1997) |
| September 21 | 88.0°F (1944) | 18.0°F (1983) | 0.68 in (1997) |
| September 22 | 84.9°F (1935) | 17.1°F (1971) | 1.18 in (2000) |
| September 23 | 84.0°F (1921) | 17.1°F (1946) | 1.43 in (1931) |
| September 24 | 84.9°F (1987) | 19.9°F (1926) | 0.67 in (1935) |
| September 25 | 86.0°F (1948) | 7.0°F (1926) | 0.89 in (1934) |
| September 26 | 84.9°F (1981) | 18.0°F (1942) | 0.73 in (1933) |
| September 27 | 86.0°F (1921) | 21.9°F (1934) | 0.58 in (1959) |
| September 28 | 87.1°F (2024) | 17.1°F (1916) | 0.42 in (1986) |
| September 29 | 87.1°F (2024) | 18.0°F (1936) | 0.85 in (1995) |
| September 30 | 84.0°F (1957) | 14.0°F (1985) | 0.47 in (1969) |