Lago Vista/Allen Arpt climate by month
Averages and records for each calendar month at Lago Vista/Allen Arpt, United States, from 2014 to 2026. The warmest month is August, averaging 36.2°C; the coolest is January at 15.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 15.8°C | 4.8°C | 28.9°C2 January 2026 | −9.9°C17 January 2018 | 12 / 12 |
| February | 18.4°C | 7.1°C | 32.2°C23 February 2017 | −15.5°C15 February 2021 | 12 / 12 |
| March | 23.8°C | 12.0°C | 33.9°C14 March 2025 | −4.3°C5 March 2019 | 11 / 12 |
| April | 26.1°C | 14.9°C | 36.7°C5 April 2022 | 3.3°C7 April 2018 | 12 / 12 |
| May | 29.7°C | 18.7°C | 38.3°C7 May 2022 | 8.9°C2 May 2026 | 12 / 12 |
| June | 33.5°C | 22.5°C | 40.6°C11 June 2022 | 15.6°C2 June 2021 | 12 / 12 |
| July | 35.4°C | 23.6°C | 42.8°C23 July 2018 | 17.8°C25 July 2019 | 12 / 12 |
| August | 36.2°C | 23.8°C | 41.7°C17 August 2023 | 18.3°C22 August 2020 | 10 / 11 |
| September | 32.8°C | 21.4°C | 40.6°C8 September 2023 | 11.7°C29 September 2020 | 11 / 12 |
| October | 27.6°C | 16.2°C | 36.7°C12 October 2015 | −1.0°C31 October 2019 | 10 / 11 |
| November | 20.6°C | 10.7°C | 31.7°C1 November 2016 | −4.3°C12 November 2019 | 10 / 12 |
| December | 18.1°C | 8.1°C | 30.6°C30 December 2024 | −11.6°C23 December 2022 | 11 / 12 |
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 10 to 12 years each.
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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.