Grundy County, IA
: September 2026 so far brought 6.24 in of precipitation in Grundy County, IA, the wettest 1 to 29 September in the county average since 2018, 6th wettest of 76 (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- Tuesday 29 September 2026: a high of 74.3°F averaged over Grundy County, IA, the warmest 29 September in the county average since 2025, 24th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 53°F averaged over Grundy County, IA, the warmest 29 September night in the county average since 2024, 17th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- No measurable precipitation in the county average of Grundy County, IA for 1 day to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
The month
- September 2026 so far averaged 67.1°F in Grundy County, IA, the warmest 1 to 29 September in the county average since 2019, tied 5th warmest of 76 (with 2005) (county average from NOAA gridded data, 1951 to 2026).
- August 2026 averaged 70.9°F in Grundy County, IA, the warmest August in the county average since 2024, tied 53rd warmest of 132 (with 2024 and 1898) (county average from NOAA's monthly county data, 1895 to 2026).
- Days of the month without a value
- 0
Every year on this date
- Above the normal range
- In it
- Below it
- Normal range
- This year and the extreme
Every year as a table
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 74.3 | 53 |
| 2025 | 84.7 | 50 |
| 2024 | 83.5 | 53.3 |
| 2023 | 74.4 | 59.2 |
| 2022 | 62.4 | 32.9 |
| 2021 | 83.8 | 55.9 |
| 2020 | 60.5 | 45.4 |
| 2019 | 69.4 | 52 |
| 2018 | 52.6 | 36.9 |
| 2017 | 76.3 | 44.7 |
| 2016 | 63.4 | 48 |
| 2015 | 83.2 | 55.1 |
| 2014 | 81.5 | 53.7 |
| 2013 | 69.6 | 41.1 |
| 2012 | 74.9 | 37.3 |
| 2011 | 73.7 | 51.4 |
| 2010 | 71.2 | 47.4 |
| 2009 | 60.8 | 42.2 |
| 2008 | 71.6 | 54.4 |
| 2007 | 73.3 | 43 |
| 2006 | 58.9 | 39 |
| 2005 | 59.6 | 36.1 |
| 2004 | 68 | 36.3 |
| 2003 | 55.9 | 31.9 |
| 2002 | 72.5 | 48 |
| 2001 | 71.8 | 40.2 |
| 2000 | 75.3 | 45.1 |
| 1999 | 64.3 | 39.3 |
| 1998 | 80.7 | 52.5 |
| 1997 | 76.3 | 51.5 |
| 1996 | 67.3 | 46.6 |
| 1995 | 80.2 | 50.7 |
| 1994 | 68.6 | 40.7 |
| 1993 | 59.7 | 34.8 |
| 1992 | 56.8 | 30.1 |
| 1991 | 66.8 | 35 |
| 1990 | 71 | 48.2 |
| 1989 | 78 | 43.4 |
| 1988 | 64.3 | 55.3 |
| 1987 | 72.2 | 53.2 |
| 1986 | 77.3 | 56.6 |
| 1985 | 53.8 | 40.7 |
| 1984 | 51 | 27.1 |
| 1983 | 82.6 | 58.2 |
| 1982 | 77.7 | 54.2 |
| 1981 | 66.8 | 36.8 |
| 1980 | 76 | 49.4 |
| 1979 | 79.4 | 54.4 |
| 1978 | 68.6 | 40.6 |
| 1977 | 71.6 | 43.6 |
| 1976 | 60.2 | 40.3 |
| 1975 | 64.3 | 49 |
| 1974 | 59.2 | 35.5 |
| 1973 | 65.1 | 59.9 |
| 1972 | 67.3 | 36.5 |
| 1971 | 83.7 | 50.7 |
| 1970 | 69.9 | 40.9 |
| 1969 | 72.2 | 45.4 |
| 1968 | 61.7 | 45.4 |
| 1967 | 57.7 | 27.2 |
| 1966 | 66.7 | 44.5 |
| 1965 | 73.5 | 53.6 |
| 1964 | 66.6 | 33.8 |
| 1963 | 69.7 | 40.3 |
| 1962 | 67.6 | 36.3 |
| 1961 | 58.5 | 33.9 |
| 1960 | 63.7 | 45.7 |
| 1959 | 58.3 | 38.7 |
| 1958 | 72.7 | 43.9 |
| 1957 | 69.8 | 35.3 |
| 1956 | 75.3 | 42.6 |
| 1955 | 73.8 | 52.6 |
| 1954 | 75.4 | 56.8 |
| 1953 | 88.5 | 59.5 |
| 1952 | 83.9 | 48.9 |
| 1951 | 55.3 | 33.8 |
Nearby
Waterloo, IA 22.4 mi, the nearest city with its own station