Dallas County, IA
: September 2026 so far brought 7.52 in of precipitation in Dallas County, IA, the wettest 1 to 29 September 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
- 77.1°F
- Warmest since 2025
- 22nd warmest of 76
- Low
- 56.6°F
- Warmest since 2021
- 10th warmest of 76
No measurable precipitation in the county average of Dallas County, IA for 2 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 34.8 to 54.3°F
Every year as a table
Every 29 September high of the county average in Dallas County, IA since 1951: 77.1°F in 2026; the highest is 90.6°F, in 1953.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 77.1 | 56.6 |
| 2025 | 86.5 | 50 |
| 2024 | 85.6 | 52.6 |
| 2023 | 78.8 | 52.6 |
| 2022 | 64.4 | 34.5 |
| 2021 | 89.2 | 58 |
| 2020 | 61.8 | 44.3 |
| 2019 | 71.3 | 51.4 |
| 2018 | 49.4 | 40.8 |
| 2017 | 76.8 | 47.7 |
| 2016 | 61.3 | 47.1 |
| 2015 | 84 | 55.2 |
| 2014 | 81 | 55.2 |
| 2013 | 70 | 43.4 |
| 2012 | 74.3 | 39.3 |
| 2011 | 81.6 | 51.6 |
| 2010 | 72.7 | 47.4 |
| 2009 | 63 | 42.7 |
| 2008 | 72.5 | 54.2 |
| 2007 | 74.7 | 42.1 |
| 2006 | 59.9 | 40.9 |
| 2005 | 60.1 | 34.8 |
| 2004 | 69.7 | 37.9 |
| 2003 | 59.4 | 31.3 |
| 2002 | 76.1 | 50.3 |
| 2001 | 73.4 | 41.6 |
| 2000 | 79.6 | 45.5 |
| 1999 | 65.1 | 38.2 |
| 1998 | 82.5 | 57.7 |
| 1997 | 76.4 | 52.2 |
| 1996 | 68.7 | 45 |
| 1995 | 79.9 | 50.9 |
| 1994 | 73.5 | 42.8 |
| 1993 | 64.5 | 34.3 |
| 1992 | 58.4 | 32.9 |
| 1991 | 70.8 | 38.6 |
| 1990 | 75.1 | 50.6 |
| 1989 | 78 | 43.2 |
| 1988 | 66.6 | 59.8 |
| 1987 | 75.4 | 53.2 |
| 1986 | 81.3 | 59.6 |
| 1985 | 54.6 | 40.2 |
| 1984 | 52.6 | 28.2 |
| 1983 | 84.7 | 60.5 |
| 1982 | 79.2 | 58.6 |
| 1981 | 72.8 | 39.5 |
| 1980 | 77.2 | 49 |
| 1979 | 80.7 | 49.2 |
| 1978 | 71.7 | 43.7 |
| 1977 | 72.9 | 48.2 |
| 1976 | 62.6 | 44.4 |
| 1975 | 68.7 | 47.1 |
| 1974 | 59.8 | 32.7 |
| 1973 | 68.7 | 57.6 |
| 1972 | 71.3 | 37.5 |
| 1971 | 85.6 | 55.6 |
| 1970 | 76.9 | 42.1 |
| 1969 | 76.2 | 50.3 |
| 1968 | 68.3 | 49.9 |
| 1967 | 60.8 | 29 |
| 1966 | 65.8 | 45.6 |
| 1965 | 78.1 | 53.4 |
| 1964 | 73 | 37 |
| 1963 | 70.3 | 40.7 |
| 1962 | 70.8 | 37.1 |
| 1961 | 63.6 | 40.6 |
| 1960 | 67.4 | 48.7 |
| 1959 | 57.3 | 36.7 |
| 1958 | 73.6 | 45.3 |
| 1957 | 73.1 | 37.3 |
| 1956 | 80.3 | 45.3 |
| 1955 | 75.7 | 55.1 |
| 1954 | 73.8 | 57.1 |
| 1953 | 90.6 | 60.6 |
| 1952 | 85.6 | 51.7 |
| 1951 | 60 | 36.9 |
The month
September 2026 so far averaged 69.3°F in Dallas County, IA, the warmest 1 to 29 September in the county average since 2019, tied 3rd warmest of 76 (with 2015 and 1978) (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 73.2°F in Dallas County, IA, the warmest August in the county average since 2023, tied 45th warmest of 132 (with 1960) (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 77.1°F averaged over Dallas County, IA, the warmest 29 September in the county average since 2025, 22nd warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 56.6°F averaged over Dallas 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 22.6 mi, the nearest city with its own station