Altoona weather by month
Measured at Altoona/Blair Cnty
Averages and records for each calendar month at Altoona/Blair Cnty, United States, from 1949 to 2026. The warmest month is July, averaging 27.9°C; the coolest is January at 1.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 1.5°C | −6.4°C | 23.3°C25 January 1950 | −31.7°C19 January 1994 | 70 / 70 |
| February | 3.2°C | −5.6°C | 24.4°C21 February 2018 | −23.3°C18 February 1979 | 70 / 70 |
| March | 8.6°C | −1.3°C | 29.4°C30 March 1998 | −17.2°C2 March 1980 | 69 / 70 |
| April | 15.6°C | 4.0°C | 31.7°C18 April 1976 | −11.1°C7 April 1982 | 70 / 70 |
| May | 21.0°C | 9.4°C | 34.4°C29 May 1969 | −3.9°C10 May 1966 | 70 / 70 |
| June | 25.7°C | 14.2°C | 36.1°C21 June 1953 | 0.0°C1 June 1966 | 70 / 70 |
| July | 27.9°C | 16.3°C | 39.4°C22 July 2011 | 5.0°C21 July 1966 | 70 / 70 |
| August | 26.8°C | 15.3°C | 35.6°C2 August 2002 | 2.2°C29 August 1982 | 69 / 70 |
| September | 22.9°C | 11.4°C | 36.1°C3 September 1953 | −1.1°C24 September 1963 | 70 / 71 |
| October | 16.8°C | 5.9°C | 32.2°C1 October 2019 | −6.7°C24 October 1969 | 70 / 70 |
| November | 9.9°C | 1.0°C | 26.1°C1 November 1950 | −13.9°C25 November 1950 | 69 / 70 |
| December | 3.7°C | −3.9°C | 23.3°C6 December 1998 | −23.9°C25 December 1983 | 70 / 70 |
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 69 to 70 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.