Johnson City weather by month
Measured at Bristol/Tri-Cities Arpt
Averages and records for each calendar month at Bristol/Tri-Cities Arpt, United States, from 1937 to 2026. The warmest month is July, averaging 30.0°C; the coolest is January at 7.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 7.6°C | −3.2°C | 26.1°C25 January 1950 | −29.4°C21 January 1985 | 89 / 89 |
| February | 10.0°C | −1.8°C | 27.8°C21 February 2018 | −26.1°C5 February 1996 | 89 / 89 |
| March | 15.0°C | 1.9°C | 29.4°C18 March 1943 | −18.9°C3 March 1980 | 88 / 89 |
| April | 20.4°C | 6.5°C | 32.2°C19 April 1941 | −6.1°C1 April 1964 | 89 / 89 |
| May | 24.8°C | 11.3°C | 34.4°C22 May 1941 | −1.1°C5 May 1940 | 88 / 89 |
| June | 28.6°C | 15.9°C | 39.4°C30 June 2012 | 3.3°C1 June 1966 | 89 / 89 |
| July | 30.0°C | 18.1°C | 38.9°C28 July 1952 | 7.2°C23 July 1947 | 89 / 89 |
| August | 29.6°C | 17.4°C | 38.3°C18 August 1988 | 6.1°C29 August 1986 | 89 / 89 |
| September | 26.7°C | 13.7°C | 37.8°C6 September 1954 | 0.6°C29 September 1942 | 88 / 89 |
| October | 21.1°C | 7.1°C | 34.4°C3 October 2019 | −6.7°C27 October 1962 | 89 / 89 |
| November | 14.5°C | 1.6°C | 28.9°C6 November 2022 | −15.0°C25 November 1950 | 89 / 89 |
| December | 9.3°C | −1.8°C | 25.6°C7 December 1951 | −22.8°C13 December 1962 | 89 / 89 |
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 88 to 89 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.