1/ Welcome #meteorologicalautumn 🍂 Here's a meteorological summer (JJA) roundup for #YYZ: avg max T: 27.3 (tied 11th multiple years, record 28.7 1949) avg min T: 16.8 (6th, record 17.6 2005) avg mean T: 22.1 (tied 6th multiple years, record 23.1 2005) #ONWx #ONstorm

Ottawa Airport #YOW currently on day 10 with no precip reported. Summer (JJA) total so far of 113.5mm is well below the climatological (1991-2020) norm of 264.5mm. On pace to be one of the driest summers on record #ONwx #ONstorm

As of 8PM, there have been 32 #smoke hours at #YOW recorded so far this August (FU & <=6SM) tying for 3rd smokiest month on record with August 1955. Still a far ways from the record of 137 hours in June 2023 (POR 1953-present) #ONwx #ONstorm

1/ July roundup for #YYZ avg max T: 29.4C (9th, record 31 in 1955) avg min T: 18.4C (5th, record 19.5 in 2020) avg mean T: 23.9C (8th, record 25 in 2020) #ONwx #ONstorm

Happy St Swithun's Day to all who celebrate

Pierre Elliott Trudeau Airport #YUL set a July daily rainfall record yesterday with 81.6mm reported, beating the previous July record of 79.2mm set July 10 2024, when the city received heavy rain from the remnants of TC Beryl #QCstorm

With a max of 35.5C, today is (preliminarily) the warmest June day on record at #YUL Previous record 35C June 30 1964 (POR 1942-present) #QCstorm #meteoQC #hot

With a max of 36C as of 5PM, #YYZ has now tied for 4th highest June temperature on record (w/ Jun 25 1988). Record is 36.7C set Jun 25 1952 #ONstorm #ONwx #hot

With a low of 24.8C, yesterday (Jun 22 2025) is now the highest minimum June temperature on record for #YYZ (POR 1938-present), and the 6th all-time warmest minimum temperature (record 26.3C Aug 1 2006) #ONstorm #ONwx #hot

The #heat is on 🥵 12PM humidex of 44 at #YYZ ties for third highest June humidex by the noon hour, record 45 2-way Jun 15 1981, Jun 30 2018 It also ties 15th highest all-time (by noon hour), record 48 July 21 2011 #ONstorm #ONwx

Tomorrow's forecast humidex of 45 for Toronto would put it in a 3-way tie for 2nd highest daily June humidexes at #YYZ (record 46 June 30 2018, period of record 1953-present) #ONstorm #ONwx

1/ Welcome #meteorologicalsummer ☀️ Here's the spring round-up for #YYZ avg max T: 12.8C (tied 16th highest w/ 1955, 2015) avg min T: 2.4C (tied 17th highest w/ 1987, 2011, 2016) avg mean T: 7.6C (tied 16th highest w/ 1946, 2001) #ONWx #ONStorm

With 34.9C today, Winnipeg #YWG ties its 10th warmest May day on record (May 5 2016). Warmest is 37.8C May 30 1934 (period of record 1872-present) #MBwx #MBstorm

Yesterday's 103km/h at #YYZ is tied as the 4th highest April wind gust (and tied 26th all-time) #ONstorm #ONwx

Pearson #YYZ reached a max of 21.3C this afternoon, the first >20C day of 2025! This is the 7th earliest first occurrence on record (POR 1938-present) Record earliest: March 8 2000 Record latest: May 19 1978 (1991-2020 climatological median: April 14

We have Pearson's #YYZ first >15C of the year! Tied 29th earliest (w/ 2010) Record earliest: January 8 2008 Record latest: April 28 1965 (1991-2020 climatological median first: March 14) #ONwx #ONstorm

Another >20C day at #YQG making it just the 18th time on record with at least 2 consecutive 20C days in March (POR 1941-present) Longest streak: March 14-23 2012 (10 days) Most recent streak: March 22-24 2021 (3 days) #ONwx #ONstorm

Windsor Airport #YQG reached 20.1C in the past hour, making this the first >=20C of the year for Ontario! YQG first 20C stats: Record earliest: February 26 2000 Record latest: April 30 1944 1991-2020 climatological media first: April 9 #ONwx #ONstorm

First >10C of the year at #YUL... tied for 29th earliest (w/ 2009 & 2021) Earliest first occurrence on record: January 15 1995 Latest first occurrence on record: April 17 1972 (1991-2020 median first occurrence is March 23) #meteoQC #QCstorm

Finally got the first 10C at #YYZ... tied for 26th latest (w/ 1955, 1966, and 1968). Earliest first occurrence on record: January 1 2011 Latest first occurrence on record: April 11 1972 (1991-2020 median first occurrence is January 19) #ONwx #ONstorm

1/ Welcome #MeteorologicalSpring 🌷 Here's the meteorological winter 2024/25 round-up for #YYZ: avg max T: -0.3 (record 3.6 - 2001/02) avg min T: -6.9 (tied 20th highest, record -2.9 - 2023/24) #ONwx #ONstorm

With the 4.6cm from yesterday, February 2025 is now the snowiest February (78cm) on record at #YYZ More snow on the way today, and just 8.6cm of the all-time monthly snow record (86.6cm December 1951) #ONstorm #ONwx

The next few days gives #YYZ a very real shot at breaking not only the February snowfall record, but also the all-time monthly snowfall record; currently just 13.2cm shy #ONstorm #ONwx

We're up to 15cm (unofficially) at #YYZ as of 1PM which bumps February 2025 up to 2nd snowiest February and 5th snowiest month ever on record #ONstorm

Yesterday's 8cm at #YYZ bumps February 2025 into the top 10 for total snowfall. Another 3cm (unofficial) as of 7AM today pushes us up 7th so far with plenty more on the way #ONstorm

Chance at the top 10 2-day snowfalls for #YYZ this weekend. The 26.4cm from this past Wed/Thurs ranked 29th (3-way tie) #ONstorm

Montreal #YUL just had its second snowiest February day on record with 34cm reported (record 39.4 Feb 16 1954). It is also the 9th snowiest day overall #meteoQC

well, it's #groundhogday ... again...

1/ January #YYZ roundup: overall, near climatologocial norm for temperatures avg max T: -1.8C (record 3.8 in 2006) avg min T: -9C (record -3.3 in 2023) avg mean T: -5.4 (record 0.2 in 2006) #ONwx #ONstorm

2024 was far and away the wettest year on record at #YYZ with 1145.2mm, beating the old record of 1049.6mm (2008), and surpassing the 1991-2020 climatological mean by over 300mm (806.8mm) #ONwx #ONstorm

This morning's temperature of -17.9C is the coldest day in almost 2 years (Feb 4 2023, -21.4C) and the coldest December temperature at #YYZ since Dec 31 2017 (-22.6C) #ONwx

Everyone excited about white christmases, but here's a look at historical white #Hanukkah for #Toronto #chrismukkah 🕎

With 1cm of snow (so far) today at #YYZ we're already at about 1/5 of the snow received all last winter. The 6.6cm recorded on Wednesday is also more than we received on any day in winter (DJF) 2023 #ONwx

1/ Welcome meteorological winter Meteorological fall (SON) roundup for #YYZ: avg max T: 17.0C (4th, record 17.3 2016) avg min T: 7.5C (3rd, record 8.1 2016) avg mean T: 12.3C (2nd, record 12.7 2016) max T: 28.3C (tied 17th, record 36.7 1953) min T: -4.7C (tied 11th, record -2 2001) #ONwx

We have yet to record even a trace of snow at Pearson #YYZ this year, putting it in 2nd for latest first occurrences. A lot of opportunity this week, but closing in on the top spot (Dec 1 2009) #ONstorm #ONwx

It was a crawl to get here over the past several weeks, but 2024 now has the record for most precipitation at Toronto Pearson Int'l Airport (period of record 1938-present) #ONwx #ONstorm #YYZ