Boone County, IA
: September 2026 so far brought 6.89 in of precipitation in Boone County, IA, the wettest 1 to 29 September in the county average since 2016, 4th 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.
- High
- 76.1°F
- Warmest since 2025
- 24th warmest of 76
- Low
- 55.6°F
- Warmest since 2021
- 10th warmest of 76
No measurable precipitation in the county average of Boone County, IA for 2 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 34.4 to 54.7°F
Every year as a table
Every 29 September high of the county average in Boone County, IA since 1951: 76.1°F in 2026; the highest is 88.5°F, in 1953.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 76.1 | 55.6 |
| 2025 | 85.8 | 48.5 |
| 2024 | 86 | 52.8 |
| 2023 | 76.5 | 54.2 |
| 2022 | 64.1 | 33.6 |
| 2021 | 88.2 | 58.4 |
| 2020 | 61.2 | 44.6 |
| 2019 | 71.7 | 50.7 |
| 2018 | 50.8 | 39.1 |
| 2017 | 77 | 47.3 |
| 2016 | 60.9 | 46.8 |
| 2015 | 83.4 | 54.8 |
| 2014 | 80.8 | 55.3 |
| 2013 | 69.1 | 42.8 |
| 2012 | 74.3 | 39.5 |
| 2011 | 80.9 | 52.1 |
| 2010 | 72.6 | 47.5 |
| 2009 | 62.6 | 43.3 |
| 2008 | 70.6 | 54.7 |
| 2007 | 73.9 | 42.2 |
| 2006 | 59.3 | 40.3 |
| 2005 | 58.8 | 34.5 |
| 2004 | 69 | 37.5 |
| 2003 | 58.7 | 31.5 |
| 2002 | 72.7 | 49.7 |
| 2001 | 73.7 | 41.9 |
| 2000 | 79.7 | 45.4 |
| 1999 | 65.7 | 37.4 |
| 1998 | 82.5 | 56.7 |
| 1997 | 76.2 | 52.1 |
| 1996 | 67.7 | 44.9 |
| 1995 | 79.1 | 50.8 |
| 1994 | 71.9 | 41.8 |
| 1993 | 62.6 | 33.9 |
| 1992 | 57.5 | 32.3 |
| 1991 | 69.8 | 37.3 |
| 1990 | 73.1 | 49.8 |
| 1989 | 78.5 | 44.1 |
| 1988 | 65.5 | 58.6 |
| 1987 | 74.7 | 52.9 |
| 1986 | 79.5 | 58.4 |
| 1985 | 52.4 | 39.8 |
| 1984 | 51.2 | 28 |
| 1983 | 84.4 | 59.2 |
| 1982 | 78.1 | 57.5 |
| 1981 | 72.1 | 38.5 |
| 1980 | 77.7 | 49.5 |
| 1979 | 77.8 | 49.6 |
| 1978 | 70.9 | 43.2 |
| 1977 | 72.3 | 47.8 |
| 1976 | 63.4 | 42.5 |
| 1975 | 68 | 46.1 |
| 1974 | 58.7 | 31.8 |
| 1973 | 66.5 | 58.3 |
| 1972 | 68.7 | 36.6 |
| 1971 | 83.4 | 53.2 |
| 1970 | 75.8 | 41.5 |
| 1969 | 75.2 | 49.6 |
| 1968 | 65.6 | 48.4 |
| 1967 | 60.6 | 28.8 |
| 1966 | 65.7 | 45.9 |
| 1965 | 76.7 | 52.5 |
| 1964 | 71.9 | 36.7 |
| 1963 | 69.3 | 40.3 |
| 1962 | 70.1 | 37 |
| 1961 | 61.7 | 40 |
| 1960 | 66.5 | 47 |
| 1959 | 56.3 | 36.2 |
| 1958 | 73.2 | 45.6 |
| 1957 | 72.6 | 36.8 |
| 1956 | 77.3 | 43.7 |
| 1955 | 73.8 | 54.2 |
| 1954 | 71.9 | 56.2 |
| 1953 | 88.5 | 58.9 |
| 1952 | 84.2 | 50.3 |
| 1951 | 57.7 | 36.3 |
The month
September 2026 so far averaged 68.1°F in Boone County, IA, the warmest 1 to 29 September in the county average since 2019, tied 6th warmest of 76 (with 2005) (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 72.4°F in Boone County, IA, the warmest August in the county average since 2023, tied 43rd warmest of 132 (with 2020 and 1922) (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 76.1°F averaged over Boone 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 55.6°F averaged over Boone County, IA, the warmest 29 September night in the county average since 2021, 10th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Des Moines, IA 37.8 mi, the nearest city with its own station