Collin County, TX
: September 2026 so far averaged 85.8°F in Collin County, TX, the warmest 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
- 90.2°F
- Warmest since 2023
- 21st warmest of 76
- Low
- 72.3°F
- Warmest since 2019
- 5th warmest of 76
No measurable precipitation in the county average of Collin County, TX for 7 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 51.9 to 67.3°F
Every year as a table
Every 29 September high of the county average in Collin County, TX since 1951: 90.2°F in 2026; the highest is 102.5°F, in 1953.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 90.2 | 72.3 |
| 2025 | 86.5 | 62.8 |
| 2024 | 88.8 | 62 |
| 2023 | 94.9 | 70.6 |
| 2022 | 89.7 | 61.4 |
| 2021 | 92.7 | 67.9 |
| 2020 | 75.4 | 51.2 |
| 2019 | 93.9 | 75.2 |
| 2018 | 76.3 | 61.4 |
| 2017 | 77.2 | 64.8 |
| 2016 | 87.1 | 54.6 |
| 2015 | 88.2 | 66.8 |
| 2014 | 87 | 62.9 |
| 2013 | 84.2 | 60.4 |
| 2012 | 84.5 | 68.7 |
| 2011 | 93.3 | 63.5 |
| 2010 | 83.5 | 54.2 |
| 2009 | 79.2 | 52.5 |
| 2008 | 85.9 | 56 |
| 2007 | 87.1 | 61.9 |
| 2006 | 77.7 | 51.9 |
| 2005 | 95.7 | 59.3 |
| 2004 | 83.4 | 56.4 |
| 2003 | 78.5 | 55.1 |
| 2002 | 91.2 | 64.1 |
| 2001 | 78.8 | 54.2 |
| 2000 | 83.3 | 52.1 |
| 1999 | 83.9 | 53.6 |
| 1998 | 94.1 | 69.8 |
| 1997 | 91.4 | 62.6 |
| 1996 | 73.7 | 47.8 |
| 1995 | 87 | 67.1 |
| 1994 | 94.1 | 63.6 |
| 1993 | 89.1 | 57.2 |
| 1992 | 79.7 | 55.5 |
| 1991 | 79.5 | 51.4 |
| 1990 | 89.9 | 65.3 |
| 1989 | 80.1 | 51.3 |
| 1988 | 88 | 63.6 |
| 1987 | 80.6 | 61.3 |
| 1986 | 90.9 | 73.1 |
| 1985 | 76.9 | 60.4 |
| 1984 | 57.4 | 50.7 |
| 1983 | 86.7 | 62.7 |
| 1982 | 89.3 | 67 |
| 1981 | 91.7 | 64.8 |
| 1980 | 61.4 | 55.2 |
| 1979 | 90.9 | 63.1 |
| 1978 | 85.5 | 56.6 |
| 1977 | 94.9 | 74.7 |
| 1976 | 71.9 | 58.8 |
| 1975 | 84.2 | 59.3 |
| 1974 | 72 | 46.9 |
| 1973 | 76.7 | 54.7 |
| 1972 | 88.3 | 71 |
| 1971 | 87.4 | 69.7 |
| 1970 | 74.2 | 55.8 |
| 1969 | 90.4 | 62.3 |
| 1968 | 83 | 57.4 |
| 1967 | 67.3 | 44 |
| 1966 | 79.8 | 58.2 |
| 1965 | 82.1 | 59.9 |
| 1964 | 66.7 | 55.7 |
| 1963 | 85.3 | 59.3 |
| 1962 | 82.5 | 58.4 |
| 1961 | 81.9 | 64.7 |
| 1960 | 82.5 | 55.5 |
| 1959 | 92.5 | 64.8 |
| 1958 | 75.9 | 53.7 |
| 1957 | 78.8 | 56.4 |
| 1956 | 95.1 | 61.1 |
| 1955 | 91.5 | 72.2 |
| 1954 | 95.4 | 74.5 |
| 1953 | 102.5 | 66.2 |
| 1952 | 92.6 | 57.5 |
| 1951 | 74.1 | 57.8 |
The month
August 2026 averaged 89.2°F in Collin County, TX, the warmest August in the county average since 2023, 3rd warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
The month in words
- Tuesday 29 September 2026: a high of 90.2°F averaged over Collin County, TX, the warmest 29 September in the county average since 2023, 21st warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 72.3°F averaged over Collin County, TX, the warmest 29 September night in the county average since 2019, 5th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Dallas, TX 28.7 mi, the nearest city with its own station