Hamilton/Munro Intl climate by month
Averages and records for each calendar month at Hamilton/Munro Intl, Canada, from 1959 to 2011. The warmest month is July, averaging 26.4°C; the coolest is January at −2.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −2.1°C | −9.7°C | 16.7°C13 January 2005 | −30.0°C16 January 2004 | 51 / 51 |
| February | −1.2°C | −9.3°C | 15.8°C21 February 1997 | −26.7°C10 February 1994 | 50 / 51 |
| March | 3.8°C | −4.7°C | 25.0°C31 March 1998 | −24.6°C3 March 2003 | 52 / 52 |
| April | 11.5°C | 1.3°C | 29.7°C25 April 1990 | −12.8°C7 April 1972 | 52 / 52 |
| May | 18.4°C | 7.1°C | 33.1°C29 May 2006 | −3.9°C10 May 1966 | 51 / 52 |
| June | 23.8°C | 12.5°C | 35.0°C25 June 1988 | 1.1°C6 June 1998 | 50 / 51 |
| July | 26.4°C | 15.1°C | 37.4°C7 July 1988 | 5.6°C5 July 1961 | 52 / 52 |
| August | 25.4°C | 14.5°C | 36.4°C8 August 2001 | 1.1°C30 August 1965 | 48 / 51 |
| September | 21.1°C | 10.5°C | 34.4°C3 September 1973 | −2.2°C23 September 1974 | 51 / 52 |
| October | 14.1°C | 4.6°C | 30.3°C8 October 2007 | −7.8°C29 October 1965 | 51 / 52 |
| November | 7.4°C | −0.1°C | 24.4°C3 November 1961 | −19.3°C23 November 2000 | 53 / 53 |
| December | 0.8°C | −6.3°C | 20.7°C3 December 1982 | −26.8°C25 December 1980 | 52 / 53 |
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 48 to 53 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.