Cotulla/LaSalle Cnty weather by month
Averages and records for each calendar month at Cotulla/LaSalle Cnty, United States, from 1949 to 2026. The warmest month is August, averaging 37.5°C; the coolest is January at 19.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 19.4°C | 6.1°C | 35.6°C3 January 1971 | −8.9°C13 January 1975 | 48 / 48 |
| February | 21.9°C | 8.1°C | 39.4°C26 February 2026 | −9.4°C2 February 1951 | 48 / 48 |
| March | 26.5°C | 12.6°C | 41.1°C26 March 1950 | −5.0°C4 March 2002 | 48 / 48 |
| April | 30.3°C | 16.8°C | 41.1°C18 April 1975 | 1.1°C9 April 1973 | 48 / 48 |
| May | 33.1°C | 20.2°C | 44.4°C14 May 2025 | 6.7°C3 May 2011 | 48 / 48 |
| June | 36.2°C | 23.1°C | 46.7°C19 June 2023 | 14.4°C3 June 1970 | 48 / 48 |
| July | 37.1°C | 23.8°C | 43.9°C13 July 2020 | 16.7°C25 July 2019 | 48 / 48 |
| August | 37.5°C | 23.8°C | 44.4°C7 August 2023 | 17.2°C14 August 1967 | 48 / 48 |
| September | 34.0°C | 21.7°C | 42.8°C25 September 2005 | 8.9°C28 September 1967 | 47 / 48 |
| October | 30.0°C | 16.8°C | 40.0°C10 October 2021 | 1.7°C29 October 1970 | 47 / 48 |
| November | 24.3°C | 11.3°C | 36.7°C4 November 2024 | −6.1°C29 November 1976 | 47 / 47 |
| December | 20.6°C | 7.2°C | 36.7°C6 December 1951 | −8.9°C21 December 1973 | 45 / 48 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 45 to 48 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.