October weather in Grinnell, IA
The average temperature in Grinnell in October is 50.2°F (38.2°F–62.3°F). Average precipitation: 3.21 inches. Average snowfall is 0.5 inches.
October is a fall month in Grinnell, and is warmer than the annual average of 47.5°F. Daily temperatures swing about 24.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 10h 51m. For travel, October is a comfortable month to visit.
Avg High
62.3°F
Avg Low
38.2°F
Precipitation
3.21 in
Snow
0.5 in
October records in Grinnell
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 91.0°F (2023) | 25.0°F (1984) | 1.35 in (2007) |
| October 2 | 93.0°F (1953) | 21.0°F (1974) | 4.50 in (2019) |
| October 3 | 88.0°F (2023) | 21.0°F (1974) | 2.33 in (1925) |
| October 4 | 91.0°F (1997) | 25.0°F (1950) | 1.12 in (1990) |
| October 5 | 89.1°F (1922) | 23.0°F (1988) | 1.85 in (1998) |
| October 6 | 95.0°F (1963) | 23.0°F (1988) | 1.33 in (2019) |
| October 7 | 93.0°F (1963) | 18.0°F (2012) | 1.25 in (1930) |
| October 8 | 87.1°F (1916) | 17.1°F (2012) | 1.13 in (2018) |
| October 9 | 84.0°F (2010) | 18.0°F (2000) | 4.15 in (1970) |
| October 10 | 88.0°F (1928) | 17.1°F (2000) | 1.00 in (1985) |
| October 11 | 86.0°F (1910) | 17.1°F (1987) | 1.16 in (1912) |
| October 12 | 87.1°F (2024) | 17.1°F (1987) | 1.45 in (1983) |
| October 13 | 88.0°F (1975) | 16.0°F (1909) | 70.01 in (1923) |
| October 14 | 88.0°F (1975) | 19.9°F (1909) | 2.75 in (2014) |
| October 15 | 88.0°F (1910) | 21.9°F (1972) | 1.33 in (1966) |
| October 16 | 91.9°F (1910) | 23.0°F (1972) | 1.06 in (1911) |
| October 17 | 87.1°F (1950) | 17.1°F (1976) | 2.14 in (1898) |
| October 18 | 88.0°F (1950) | 18.0°F (1976) | 1.70 in (1998) |
| October 19 | 82.9°F (1924) | 14.0°F (1972) | 1.04 in (1979) |
| October 20 | 95.0°F (1920) | 14.0°F (2022) | 1.20 in (1962) |
| October 21 | 82.9°F (1979) | 18.0°F (1913) | 1.19 in (1951) |
| October 22 | 84.9°F (1927) | 12.9°F (1976) | 1.86 in (1979) |
| October 23 | 84.9°F (1927) | 12.9°F (1976) | 1.18 in (2001) |
| October 24 | 84.0°F (1927) | 17.1°F (1999) | 1.17 in (1977) |
| October 25 | 88.0°F (1927) | 16.0°F (1999) | 1.36 in (1991) |
| October 26 | 86.0°F (1927) | 18.0°F (1981) | 1.14 in (2016) |
| October 27 | 84.9°F (1927) | 10.9°F (1997) | 1.67 in (1918) |
| October 28 | 87.1°F (1927) | 1.9°F (1925) | 2.00 in (2015) |
| October 29 | 82.9°F (1950) | 5.0°F (1925) | 0.67 in (1982) |
| October 30 | 84.9°F (1950) | 6.1°F (1925) | 1.41 in (2009) |
| October 31 | 86.0°F (1950) | 16.0°F (1949) | 2.44 in (2024) |