Found out what's been making June chilly for Toronto... (snow, warm, records)

[ColdCanadian]

A high pressure has been stalled over Hudson Bay for several weeks.
*Hudson Bay is essentially "Arctic"; very far north, plus flow from the Arctic Ocean makes it colder.

Apparently this has caused the polar jet stream to hang around southern Ontario,
even though the subtropical jet stream is as far north as D.C. or Pittsburgh.
(which means they're probably at least seasonal for temps)

Toronto has been consistantly 1-6 degrees C (2-10 F) below normal for June.

[§AB]

Sounds like Melbourne. Below average temps, yet more cold records for consequetive days below so and so temps being set etc. Also, we are recieving less than half our average June sunshine.

[city_data91]

It's been below average here too. The subtropical jet stream probably hasn't made it this far north. This is the type of weather I would expect in May or late April.

[JoshB]

Same here in Wisconsin. We've been seeing 40's at night and high 60's low 70's in the day. I have to say I love this cool weather. It's perfect!

[Jammie]

Well, that explains your chilliness, CC, but why has it been so cold here? We've also had several days that were 15 to 20 deg. below avg. Even our nighttime lows have been 7 to 10 deg. below avg. I always figure if we've within about a 10 deg. span~5 above or 5 below, we're about right now. But this past week has been VERY chilly compared to normal.

[Botev1912]

interesting. It has been very warm, sunny and dry here - 9F above average. Today is the 26th consecutive day without rain. The last day it rained was May 19. Since then there have been 24 sunny or partly cloudy and 2 cloudy days. Probably 85% of sunshine.

[ColdCanadian]

Originally Posted by Jammie

Well, that explains your chilliness, CC, but why has it been so cold here? We've also had several days that were 15 to 20 deg. below avg. Even our nighttime lows have been 7 to 10 deg. below avg. I always figure if we've within about a 10 deg. span~5 above or 5 below, we're about right now. But this past week has been VERY chilly compared to normal.

Our temps have been below seasonal since April,
but seldom dramatically-lower than average.


The Canadian Prairies had snow 2-3 weeks ago when it was in the high 50's or low 60's F here.
However, I checked out some recent stats and they are seasonal to above-seasonal now.
*The Prairie's temps tend to be more fickle, since they don't have as much water or cloud to buffer temperature swings.
Perhaps the Prairies heating up is helping generate the high over Hudson Bay... (or vice versa)
But highs in the northern hemisphere spin clockwise;
we are to the southeast of Hudson Bay so that's probably why we're consistantly getting the chill.

Again, I've never had any formal meteorological training, so this is just my hunch.

[ColdCanadian]

Originally Posted by Botev1912

interesting. It has been very warm, sunny and dry here - 9F above average. Today is the 26th consecutive day without rain. The last day it rained was May 19. Since then there have been 24 sunny or partly cloudy and 2 cloudy days. Probably 85% of sunshine.

The same system causing a strong Arctic high is probably helping you to be warmer.

Even if it is the high pressure,
highs spin clockwise,
so since you are southwest of the high (not southeast like I am)
you are probably experiencing a southerly or southeasterly airflow.
(while we get a notherly or northeasterly flow)
*If your warmth is attributed to this same Arctic high.

[Botev1912]

this is why
Warm weather record: Seattle could set a new one - KCPQ