If June seemed a bit hot and dry to you, it’s because it really was.
Chilliwack’s volunteer weather observer, Roger Pannett provides a monthly breakdown of the weather, compared against historical data of his own, and from Environment Canada.
June’s rainfall was 33.4 per cent below normal, he says, and four new temperature records were broken over June 12 and 13. June 12 broke the high minimum at 18.2C (previously 15C from 1969), the high mean at 26.3 (previously 22C from 1932), and the high maximum at a sweltering 34.5C (previously 32.2C in 1932. The next day, the high minimum temp was 17C, one degree higher than the previous record set in 1987.
“With the mean temperature 2.14°C above normal (in excess of the + or – 1.6°C standard deviation), it was the seventh consecutive June with above normal temperatures,” Pannett says, “a warming trend never previously observed since Chilliwack records commenced in 1895.”
He said the big storm on June 5 brought 14.1 mm of rainfall to Chilliwack, due to “a typical seasonal upper level trough of low pressure … This was followed by a strong ridge of high pressure with hot and sunny conditions.”
Temperature extremes for the month were the record breaking 34.5°C, with 24 per cent relative humidity, on June 12, and a minimum temperature of 7.4 °C on June 6.
He ended his report saying that the Chilliwack 2019 precipitation total to date is 584.4 mm on 68 days, compared to the 30-year average of 937 mm on 91 days.
Environment Canada is currently forecasting rain right through to early next week in Chilliwack, a continued cooling pattern from the last few days.