Merritt is a weather station located 609 m above sea level, 1 km from Merritt. Its records go back to 1963: 54 years of temperature are available up to 2018, along with rainfall and a comparison with two reference normals. Closed series: the records of this station end in 2018. Over 1991–2020 the annual mean temperature there is 8.0 °C, clearly higher than over 1961–1990 (7.0 °C): a difference of 1.0 °C. The warmest year of the series is 2015 (9.5 °C) and the coldest 1985 (5.7 °C). The last complete year, 2018, ranks 12 out of 54, from warmest to coldest. Over 1963–2018, the annual mean temperature changes by +0.41 °C per decade. The station ranks 14 out of 240 stations, from the fastest rise to the slowest.
Annual mean temperature since 1963
The first ten years of the series (1963–1974) average 6.5 °C; the last ten (2009–2018) average 8.3 °C, a difference of +1.8 °C. Of the ten warmest years in the series, 6 fall after 1999. The warmest is 2015 (9.5 °C). The ten-year running mean peaks at 8.3 °C (2007) and bottoms out at 6.3 °C (1973).
Annual rainfall since 1963
On average 327 mm of rain falls per year over the 53 documented years. The wettest year, 1990, received 457 mm; the driest, 1973, only 216 mm, which is 2.1 times less. The 1991–2020 normal (332 mm per year) is 6 mm (1.8 %) above the 1961–1990 one (326 mm). Over 1991–2020, November is on average the wettest month (40 mm) and April the driest (16 mm). Between 1998 and 2017, 7 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 | −5.3 °C | −3.1 °C | +2.2 °C | 41 mm | 29 mm | −12 mm |
| February | −1.2 °C | −0.6 °C | +0.6 °C | 23 mm | 18 mm | −5 mm |
| March | 3.4 °C | 4.0 °C | +0.6 °C | 17 mm | 20 mm | +3 mm |
| April | 7.4 °C | 8.1 °C | +0.7 °C | 18 mm | 16 mm | −2 mm |
| May | 11.6 °C | 12.8 °C | +1.2 °C | 25 mm | 33 mm | +8 mm |
| June | 15.4 °C | 16.0 °C | +0.6 °C | 29 mm | 37 mm | +8 mm |
| July | 17.9 °C | 19.5 °C | +1.6 °C | 26 mm | 26 mm | 0 mm |
| August | 17.7 °C | 19.1 °C | +1.4 °C | 26 mm | 17 mm | −9 mm |
| September | 13.1 °C | 14.5 °C | +1.4 °C | 25 mm | 24 mm | −1 mm |
| October | 7.8 °C | 7.7 °C | −0.1 °C | 19 mm | 35 mm | +16 mm |
| November | 0.8 °C | 1.5 °C | +0.7 °C | 35 mm | 40 mm | +5 mm |
| December | −4.3 °C | −3.0 °C | +1.3 °C | 42 mm | 37 mm | −5 mm |
The largest temperature change is in January (+2.2 °C) and the smallest in October (−0.1 °C); over the year the mean difference is +1.0 °C, and 11 months out of twelve are warmer than before. For rainfall, the largest difference is in October (+16 mm) and the smallest in January (−12 mm).
Records at Merritt
- Warmest year: 9.5 °C, in 2015
- Coldest year: 5.7 °C, in 1985
- Driest year: 216 mm, in 1973
- Wettest year: 457 mm, in 1990
- Warmest month: 21.9 °C, in July 1998
- Coldest month: −17.1 °C, in January 1969
- Wettest month: 136 mm, in December 1996
- Hottest day: 39.5 °C, on 23 July 1994
- Coldest day: −42.8 °C, on 30 December 1968
- Heaviest rain in one day: 43.0 mm, on 20 June 1986
3.8 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 82.3 °C.
Temperature trend over 1963–2018
The regression line of annual mean temperature changes by +0.41 °C per decade between 1963 and 2018, about +2.3 °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 14 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 Merritt 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 Merritt?
Over 1991–2020, the annual mean temperature at Merritt is 8.0 °C. It was 7.0 °C over 1961–1990, a difference of +1.0 °C.
What is the warmest year ever measured at Merritt?
Since records began in 1963, the warmest year at Merritt is 2015, at 9.5 °C on average. The coldest is 1985 (5.7 °C).
Is the climate at Merritt getting warmer?
Yes: at Merritt, the annual mean temperature rises by 0.41 °C per decade between 1963 and 2018, +2.3 °C in total. 6 of the 10 warmest years in the series fall after 1999.
Towns near this station
Neighbouring stations