Lyon County, IA
Tuesday : a low of 60.2°F averaged over Lyon County, IA, the warmest 29 September night in the county average since the data begin in 1951 (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 70°F
- Warmest since 2025
- 38th warmest of 76
- Low
- 60.2°F
- Warmest since the data begin
- Warmest of 76
No measurable precipitation in the county average of Lyon County, IA for 2 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 33.4 to 49.7°F
Every year as a table
Every 29 September high of the county average in Lyon County, IA since 1951: 70°F in 2026; the highest is 87.8°F, in 2021.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 70 | 60.2 |
| 2025 | 84.8 | 49.6 |
| 2024 | 87.5 | 48.6 |
| 2023 | 80.3 | 53.9 |
| 2022 | 66.6 | 35 |
| 2021 | 87.8 | 58 |
| 2020 | 58.2 | 38.8 |
| 2019 | 64 | 42.3 |
| 2018 | 55.7 | 35.6 |
| 2017 | 75.9 | 43.7 |
| 2016 | 62.3 | 40.9 |
| 2015 | 76.4 | 47.1 |
| 2014 | 80.7 | 56.3 |
| 2013 | 66.5 | 44 |
| 2012 | 78.2 | 39 |
| 2011 | 84.5 | 44.7 |
| 2010 | 74.8 | 49.2 |
| 2009 | 59.6 | 35.2 |
| 2008 | 73.3 | 45.9 |
| 2007 | 75.1 | 41.5 |
| 2006 | 56.7 | 37.3 |
| 2005 | 58.6 | 33.4 |
| 2004 | 67.9 | 38.9 |
| 2003 | 56.8 | 32.9 |
| 2002 | 59.3 | 46.7 |
| 2001 | 76.7 | 43 |
| 2000 | 82.7 | 49 |
| 1999 | 64.4 | 30.8 |
| 1998 | 84.4 | 51.9 |
| 1997 | 72.9 | 49.5 |
| 1996 | 66.1 | 39.3 |
| 1995 | 80.5 | 56.6 |
| 1994 | 71.6 | 39.2 |
| 1993 | 59.6 | 33.4 |
| 1992 | 57.1 | 31.2 |
| 1991 | 72.5 | 38.6 |
| 1990 | 66.6 | 44.2 |
| 1989 | 78.5 | 43.6 |
| 1988 | 62.6 | 52.6 |
| 1987 | 71.8 | 45.9 |
| 1986 | 75.5 | 48.6 |
| 1985 | 40.1 | 34.4 |
| 1984 | 48.9 | 24.2 |
| 1983 | 84.7 | 58 |
| 1982 | 77.1 | 56.1 |
| 1981 | 73.8 | 40.6 |
| 1980 | 77.7 | 53.2 |
| 1979 | 71.4 | 41.5 |
| 1978 | 75.1 | 46 |
| 1977 | 70.3 | 48.1 |
| 1976 | 61.9 | 33 |
| 1975 | 65.4 | 38.2 |
| 1974 | 61.3 | 31.6 |
| 1973 | 60.2 | 51.2 |
| 1972 | 57 | 34.1 |
| 1971 | 71.9 | 43.6 |
| 1970 | 76.2 | 42 |
| 1969 | 75.5 | 46.9 |
| 1968 | 63 | 41.3 |
| 1967 | 68.4 | 30.9 |
| 1966 | 65.3 | 44.6 |
| 1965 | 55.8 | 43.7 |
| 1964 | 65.9 | 37.1 |
| 1963 | 68.3 | 37 |
| 1962 | 65.2 | 43.5 |
| 1961 | 66.8 | 42.2 |
| 1960 | 65.1 | 39.8 |
| 1959 | 54.6 | 36.9 |
| 1958 | 73.4 | 49 |
| 1957 | 75.1 | 46 |
| 1956 | 64.6 | 37.5 |
| 1955 | 73.3 | 49.2 |
| 1954 | 66.2 | 50.1 |
| 1953 | 76.3 | 49.8 |
| 1952 | 80.7 | 43 |
| 1951 | 58.1 | 34.9 |
The month
September 2026 so far averaged 66.6°F in Lyon County, IA, the warmest 1 to 29 September in the county average since 2024, 6th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 71°F in Lyon County, IA, the warmest August in the county average since 2023, tied 50th warmest of 132 (with 2022 and 2012) (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 70°F averaged over Lyon County, IA, the warmest 29 September in the county average since 2025, 38th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Sioux Falls, SD 30.5 mi, the nearest city with its own station