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Record-breaking heat wave wiped out a wet start to June on Vancouver Island

Surprisingly, precipitation total for the month close to normal for Chemainus and Thetis Island
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A beautiful Saltair sunset in late June. (Photo by Opie Williams)

Remember when we were referring to last month as June-uary?

June did produce a decent amount of rain on Vancouver Island, but itB次元官网网址檚 long forgotten by now and being remembered more as the start of a long dry spell that continues to this day.

Keith Rush recorded 44.3 millimetres of rain at his Thetis Island weather station during June, only slightly less than last yearB次元官网网址檚 50.3 mm.

B次元官网网址淲ow, that 44 millimetres seems like an awfully long time ago after this weekB次元官网网址檚 heat wave,B次元官网网址 he conceded.

The average June on Thetis yields 30.5 mm of rain.

However, the precipitation year-to-date total for Thetis is 434.9 mm, way below the total at this time last year of 628.9 mm.

The heat though, that was exactly what you remember.

B次元官网网址淛une was a record-breaking month for summer heat this year to an extent never before seen,B次元官网网址 recounted Chris Carss, a volunteer weather observer/recorder for Environment Canada at his Chemainus home. B次元官网网址淎s reported here last week, a dome of very hot air sat over western North America from June 25 to 29 that caused temperature records across nearly all of Vancouver Island to be not just broken, but utterly smashed.B次元官网网址

The maximum temperature of 39.5 Celsius (102 Fahrenheit) in Chemainus reached on June 28 shot way past the old record of 35.5 C for the highest value ever officially recorded on any day of the year set back in 2009.

B次元官网网址淭he mean daily maximum of 24.5 Celsius for the entire month was more than three degrees Celsius above normal, a value that rarely exceeds two Celsius above the historical average, even during a hot summer.B次元官网网址

The mean daily minimum for the month was 14.1 C, with the normal being 11.8 C. The extreme minimum, which seems hard to believe now, was 6.5 C on June 7.

B次元官网网址淭he other main weather elements were a lot less exceptional with the number of mostly or partly sunny and dry days being five above normal and the total days with rain and total accumulated rainfall checking in with values almost right on normal,B次元官网网址 Carss indicated. B次元官网网址淲hen the wet days that also had some sunshine were added to the total sunny and dry days, the grand total of dry and wet days with some sunshine were still pretty close to normal.

B次元官网网址淭hat all said, the extreme heat towards the end of June wiped out most moisture that may have been in the ground earlier in the month.B次元官网网址

Despite all the heat, the total June rainfall of 45.5 mm in Chemainus was actually two millimetres above the normal of 43.5 mm.

B次元官网网址淛uly has started off with temperatures near or a little above normal and no rainfall since mid-June,B次元官网网址 noted Carss.

B次元官网网址淭hese values are expected to rise to the mid to upper 20s by mid-July with little of no rain. Some rain and a moderating in temperatures are expected in late July, but this is not expected to alleviate the water shortages before August, and maybe not then either.B次元官网网址



Don Bodger

About the Author: Don Bodger

I've been a part of the newspaper industry since 1980 when I began on a part-time basis covering sports for the Ladysmith-Chemainus Chronicle.
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