Leamington is a weather station located 200 m above sea level, 6 km from Leamington. Its records go back to 1917: 99 years of temperature are available up to 2020, along with rainfall and a comparison with two reference normals. Closed series: the records of this station end in 2020. Over 1991–2020 the annual mean temperature there is 10.0 °C, much higher than over 1961–1990 (8.7 °C): a difference of 1.3 °C. The warmest year of the series is 1998 (11.7 °C) and the coldest 1917 (6.3 °C). The last complete year, 2020, ranks 8 out of 99, from warmest to coldest. Over 1961–2020, the annual mean temperature changes by +0.41 °C per decade. The station ranks 13 out of 240 stations, from the fastest rise to the slowest.
Annual mean temperature since 1917
The first ten years of the series (1917–1926) average 8.3 °C; the last ten (2011–2020) average 10.2 °C, a difference of +1.9 °C. Of the ten warmest years in the series, 8 fall after 1999. The warmest is 1998 (11.7 °C). The ten-year running mean peaks at 10.7 °C (2007) and bottoms out at 8.3 °C (1926).
Annual rainfall since 1917
On average 893 mm of rain falls per year over the 54 documented years. The wettest year, 1926, received 1177 mm; the driest, 1934, only 579 mm, which is 2.0 times less. Over 1961–1990, June is on average the wettest month (94 mm) and February the driest (51 mm). Between 1965 and 1993, 13 years out of 20 exceeded the series average.
Monthly normals: 1961–1990 against 1991–2020
The table compares, month by month, the mean temperature and the rainfall total of two thirty-year reference periods. The difference column shows what the recent period changes compared with the earlier one.
| Month | Temp. 1961–1990 | Temp. 1991–2020 | Difference | Rain 1961–1990 | Rain 1991–2020 | Difference |
|---|---|---|---|---|---|---|
| January | −5.2 °C | −3.5 °C | +1.7 °C | 55 mm | – | – |
| February | −4.3 °C | −2.5 °C | +1.8 °C | 51 mm | – | – |
| March | 1.0 °C | 2.0 °C | +1.0 °C | 72 mm | – | – |
| April | 7.1 °C | 8.1 °C | +1.0 °C | 84 mm | – | – |
| May | 13.6 °C | 14.7 °C | +1.1 °C | 88 mm | – | – |
| June | 19.0 °C | 20.4 °C | +1.4 °C | 94 mm | – | – |
| July | 21.8 °C | 22.9 °C | +1.1 °C | 83 mm | – | – |
| August | 20.8 °C | 22.1 °C | +1.3 °C | 93 mm | – | – |
| September | 17.2 °C | 18.5 °C | +1.3 °C | 90 mm | – | – |
| October | 10.8 °C | 11.9 °C | +1.1 °C | 63 mm | – | – |
| November | 4.6 °C | 5.2 °C | +0.6 °C | 87 mm | – | – |
| December | −2.0 °C | 0.1 °C | +2.1 °C | 94 mm | – | – |
The largest temperature change is in December (+2.1 °C) and the smallest in November (+0.6 °C); over the year the mean difference is +1.3 °C, and 12 months out of twelve are warmer than before.
Records at Leamington
- Warmest year: 11.7 °C, in 1998
- Coldest year: 6.3 °C, in 1917
- Driest year: 579 mm, in 1934
- Wettest year: 1177 mm, in 1926
- Warmest month: 24.8 °C, in July 1999
- Coldest month: −11.5 °C, in January 1977
- Wettest month: 323 mm, in May 1892
- Hottest day: 37.5 °C, on 25 June 1988
- Coldest day: −29.0 °C, on 19 January 1994
- Heaviest rain in one day: 143.0 mm, on 19 April 2017
5.4 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 66.5 °C.
Temperature trend over 1961–2020
The regression line of annual mean temperature changes by +0.41 °C per decade between 1961 and 2020, about +2.4 °C over the whole period. That is faster than the median of the 240 stations (+0.25 °C per decade), by 0.16 °C per decade: the station ranks 13 out of 240.
Data source and licence
Data source: Environment and Climate Change Canada (dataset “AHCCD (ahccd-monthly) + climate-daily”), licence Open Government Licence – Canada. Last updated: 29 October 2026.
The data for Leamington are shown as the source publishes them; this site does not correct them. A year is kept only if at least eleven months of measurements are available, and a normal is computed only with at least twenty years of data out of its thirty. Temperatures are rounded to 0.1 °C and rainfall to the millimetre. The station is one of 240 stations in Canada: the overview page lets you compare them.
Frequently asked questions
What is the annual mean temperature at Leamington?
Over 1991–2020, the annual mean temperature at Leamington is 10.0 °C. It was 8.7 °C over 1961–1990, a difference of +1.3 °C.
What is the warmest year ever measured at Leamington?
Since records began in 1917, the warmest year at Leamington is 1998, at 11.7 °C on average. The coldest is 1917 (6.3 °C).
Is the climate at Leamington getting warmer?
Yes: at Leamington, the annual mean temperature rises by 0.41 °C per decade between 1961 and 2020, +2.4 °C in total. 8 of the 10 warmest years in the series fall after 1999.
Towns near this station
Neighbouring stations