Agassiz CDA is a weather station located 15 m above sea level, 2 km from Agassiz. Its records go back to 1893: 120 years of temperature are available up to 2015, along with rainfall and a comparison with two reference normals. Closed series: the records of this station end in 2015. Over 1991–2020 the annual mean temperature there is 11.1 °C, clearly higher than over 1961–1990 (10.2 °C): a difference of 0.9 °C. The warmest year of the series is 2015 (12.7 °C) and the coldest 1916 (8.3 °C). The last complete year, 2015, ranks 1 out of 120, from warmest to coldest. Over 1961–2015, the annual mean temperature changes by +0.27 °C per decade. The station ranks 101 out of 240 stations, from the fastest rise to the slowest.
Annual mean temperature since 1893
The first ten years of the series (1893–1903) average 10.4 °C; the last ten (2005–2015) average 11.1 °C, a difference of +0.7 °C. Of the ten warmest years in the series, 4 fall after 1999. The warmest is 2015 (12.7 °C). The ten-year running mean peaks at 11.1 °C (2006) and bottoms out at 9.3 °C (1917).
Annual rainfall since 1893
On average 1753 mm of rain falls per year over the 119 documented years. The wettest year, 1932, received 2427 mm; the driest, 1929, only 828 mm, which is 2.9 times less. The 1991–2020 normal (1811 mm per year) is 7 mm (0.4 %) above the 1961–1990 one (1804 mm). Over 1991–2020, November is on average the wettest month (280 mm) and July the driest (55 mm). Between 1994 and 2015, 14 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 | 2.1 °C | 3.4 °C | +1.3 °C | 238 mm | 243 mm | +5 mm |
| February | 4.6 °C | 5.5 °C | +0.9 °C | 183 mm | 136 mm | −47 mm |
| March | 6.8 °C | 7.3 °C | +0.5 °C | 157 mm | 196 mm | +39 mm |
| April | 9.6 °C | 10.4 °C | +0.8 °C | 125 mm | 127 mm | +2 mm |
| May | 12.9 °C | 14.4 °C | +1.5 °C | 103 mm | 103 mm | 0 mm |
| June | 15.7 °C | 16.4 °C | +0.7 °C | 87 mm | 93 mm | +6 mm |
| July | 17.9 °C | 19.1 °C | +1.2 °C | 64 mm | 55 mm | −9 mm |
| August | 18.1 °C | 19.0 °C | +0.9 °C | 61 mm | 64 mm | +3 mm |
| September | 15.5 °C | 16.2 °C | +0.7 °C | 105 mm | 98 mm | −7 mm |
| October | 10.7 °C | 11.2 °C | +0.5 °C | 183 mm | 197 mm | +14 mm |
| November | 5.9 °C | 6.4 °C | +0.5 °C | 251 mm | 280 mm | +29 mm |
| December | 2.6 °C | 3.6 °C | +1.0 °C | 247 mm | 219 mm | −28 mm |
The largest temperature change is in May (+1.5 °C) and the smallest in March (+0.5 °C); over the year the mean difference is +0.9 °C, and 12 months out of twelve are warmer than before. For rainfall, the largest difference is in March (+39 mm) and the smallest in February (−47 mm).
Records at Agassiz CDA
- Warmest year: 12.7 °C, in 2015
- Coldest year: 8.3 °C, in 1916
- Driest year: 828 mm, in 1929
- Wettest year: 2427 mm, in 1932
- Warmest month: 22.4 °C, in August 1898
- Coldest month: −9.5 °C, in January 1950
- Wettest month: 589 mm, in November 1990
- Hottest day: 39.4 °C, on 10 August 1898
- Coldest day: −38.0 °C, on 27 December 2021
- Heaviest rain in one day: 158.0 mm, on 14 November 2021
4.4 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 77.4 °C.
Temperature trend over 1961–2015
The regression line of annual mean temperature changes by +0.27 °C per decade between 1961 and 2015, about +1.5 °C over the whole period. That is faster than the median of the 240 stations (+0.25 °C per decade), by 0.02 °C per decade: the station ranks 101 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 Agassiz CDA 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 Agassiz CDA?
Over 1991–2020, the annual mean temperature at Agassiz CDA is 11.1 °C. It was 10.2 °C over 1961–1990, a difference of +0.9 °C.
What is the warmest year ever measured at Agassiz CDA?
Since records began in 1893, the warmest year at Agassiz CDA is 2015, at 12.7 °C on average. The coldest is 1916 (8.3 °C).
Is the climate at Agassiz CDA getting warmer?
Yes: at Agassiz CDA, the annual mean temperature rises by 0.27 °C per decade between 1961 and 2015, +1.5 °C in total. 4 of the 10 warmest years in the series fall after 1999.
Towns near this station
Neighbouring stations