Cortland/Cortland Cnty climate by month
Averages and records for each calendar month at Cortland/Cortland Cnty, United States, from 1895 to 2000. The warmest month is July, averaging 27.3°C; the coolest is January at −0.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −0.7°C | −9.3°C | 20.0°C23 January 1906 | −33.9°C19 January 1904 | 100 / 103 |
| February | −0.1°C | −9.5°C | 18.9°C20 February 1930 | −34.4°C9 February 1934 | 100 / 104 |
| March | 5.1°C | −4.8°C | 29.4°C31 March 1986 | −25.0°C19 March 1993 | 104 / 104 |
| April | 12.5°C | 1.3°C | 33.3°C22 April 1902 | −14.4°C1 April 1923 | 104 / 104 |
| May | 19.7°C | 6.9°C | 34.4°C23 May 1911 | −5.0°C12 May 1907 | 103 / 103 |
| June | 24.7°C | 12.0°C | 38.3°C29 June 1933 | −1.7°C9 June 1913 | 104 / 105 |
| July | 27.3°C | 14.7°C | 38.9°C9 July 1936 | 2.2°C11 July 1898 | 102 / 105 |
| August | 26.3°C | 13.6°C | 37.8°C23 August 1916 | −0.6°C25 August 1940 | 103 / 105 |
| September | 22.1°C | 9.7°C | 37.8°C4 September 1953 | −3.9°C28 September 1947 | 103 / 103 |
| October | 15.7°C | 4.2°C | 33.3°C2 October 1927 | −11.7°C31 October 1925 | 104 / 104 |
| November | 7.8°C | −0.6°C | 27.2°C2 November 1950 | −17.8°C26 November 1903 | 100 / 102 |
| December | 1.2°C | −6.6°C | 20.0°C7 December 1998 | −34.4°C30 December 1917 | 104 / 105 |
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 100 to 104 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.