Windsor is a weather station located 190 m above sea level, 6 km from Windsor. Its records go back to 1941: 77 years of temperature are available up to 2017, along with rainfall and a comparison with two reference normals. Closed series: the records of this station end in 2017. Over 1991–2020 the annual mean temperature there is 10.3 °C, clearly higher than over 1961–1990 (9.4 °C): a difference of 0.9 °C. The warmest year of the series is 1998 (12.1 °C) and the coldest 1943 (8.5 °C). The last complete year, 2017, ranks 11 out of 77, from warmest to coldest. Over 1961–2017, the annual mean temperature changes by +0.31 °C per decade. The station ranks 61 out of 240 stations, from the fastest rise to the slowest.
Annual mean temperature since 1941
The first ten years of the series (1941–1950) average 9.4 °C; the last ten (2008–2017) average 10.4 °C, a difference of +1.0 °C. Of the ten warmest years in the series, 6 fall after 1999. The warmest is 1998 (12.1 °C). The ten-year running mean peaks at 10.7 °C (2007) and bottoms out at 9.0 °C (1967).
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 | −4.8 °C | −3.4 °C | +1.4 °C | – | – | – |
| February | −3.7 °C | −2.3 °C | +1.4 °C | – | – | – |
| March | 1.9 °C | 2.5 °C | +0.6 °C | – | – | – |
| April | 8.3 °C | 9.0 °C | +0.7 °C | – | – | – |
| May | 14.7 °C | 15.6 °C | +0.9 °C | – | – | – |
| June | 20.0 °C | 21.0 °C | +1.0 °C | – | – | – |
| July | 22.6 °C | 23.2 °C | +0.6 °C | – | – | – |
| August | 21.5 °C | 22.3 °C | +0.8 °C | – | – | – |
| September | 17.6 °C | 18.4 °C | +0.8 °C | – | – | – |
| October | 11.2 °C | 12.0 °C | +0.8 °C | – | – | – |
| November | 4.9 °C | 5.4 °C | +0.5 °C | – | – | – |
| December | −1.7 °C | −0.4 °C | +1.3 °C | – | – | – |
The largest temperature change is in February (+1.4 °C) and the smallest in November (+0.5 °C); over the year the mean difference is +0.9 °C, and 12 months out of twelve are warmer than before.
Records at Windsor
- Warmest year: 12.1 °C, in 1998
- Coldest year: 8.5 °C, in 1943
- Warmest month: 25.9 °C, in July 2011
- Coldest month: −10.6 °C, in January 1977
3.6 °C separate the warmest year of the series from the coldest. Daily records are not part of the dataset for this station: only annual and monthly extremes are shown.
Temperature trend over 1961–2017
The regression line of annual mean temperature changes by +0.31 °C per decade between 1961 and 2017, about +1.7 °C over the whole period. That is faster than the median of the 240 stations (+0.25 °C per decade), by 0.06 °C per decade: the station ranks 61 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 Windsor 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 Windsor?
Over 1991–2020, the annual mean temperature at Windsor is 10.3 °C. It was 9.4 °C over 1961–1990, a difference of +0.9 °C.
What is the warmest year ever measured at Windsor?
Since records began in 1941, the warmest year at Windsor is 1998, at 12.1 °C on average. The coldest is 1943 (8.5 °C).
Is the climate at Windsor getting warmer?
Yes: at Windsor, the annual mean temperature rises by 0.31 °C per decade between 1961 and 2017, +1.7 °C in total. 6 of the 10 warmest years in the series fall after 1999.
Towns near this station
Neighbouring stations