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Patrick Duplessis @patwx.bsky.social · 15h

September 2026 was a warm one in most of Canada except Atlantic Canada and BC. Regions around the Hudson Bay recorded temperatures up to 3°C above normal, while parts of the Maritimes saw their coolest September since 2004 or 2009.

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Patrick Duplessis @patwx.bsky.social · 02/09/2026

August was another warmer month than normal in most of Canada, with the warmest anomalies in the north and the Maritimes. It was even the warmest August on record in Halifax. Southern parts of the Prairies ended up slightly below normal.

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Patrick Duplessis @patwx.bsky.social · 01/08/2026

July 2026 was generally warmer than normal in Canada, with colder anomalies in the northwest. The warmest anomalies were in the southern Prairies and northwestern Ontario.

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Patrick Duplessis @patwx.bsky.social · 02/07/2026

June 2026 was warmer than normal in Canada, with pockets of cooler anomalies here and there. Warmest June on record in Rankin Inlet and Cambridge Bay, and rainiest June on record in Edmonton.

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Patrick Duplessis @patwx.bsky.social · 01/06/2026

May 2026 was full of temperature swings in #Canada, but overall the warm anomalies slightly outweighed the cold ones. Ontario was cooler than normal while BC, the Prairies, most of Nunavut and Labrador were warmer than normal.

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Patrick Duplessis @patwx.bsky.social · 20/05/2026

Avec près de 13 cm de nouvelle neige (partiellement fondante) depuis hier à l'aéroport de La Grande-Rivière, à la Baie-James, le total du mois s'élève maintenant à 34 cm! Un nouveau record pour un mois de mai. Données depuis 1977.

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Patrick Duplessis @patwx.bsky.social · 20/05/2026

Halifax YHZ airport hit 30.3°C this afternoon! This is the earliest date to hit 30°C at the station, beating May 22, in 1992 (32.6°C). Normal high is 16°C. #NSwx

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Reposted by Patrick Duplessis

Rick Thoman @alaskawx.bsky.social · 05/05/2026

It’s been a cold spring in the eastern Arctic Canada. How cold? Nunavut just finished the coldest March-April since before 1950, edging out March-April 1964. There is no significant multi-decade trend. ERA5 data courtesy @copernicusecmwf.bsky.social. #Canada #Arctic #Climate @patwx.bsky.social

Graphic showing the average March through April average temperature in Nunavut, Canada each year 1950 to 2026. The five highest and lowest values are highlighted and the 77 year average is shown.

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Patrick Duplessis @patwx.bsky.social · 01/05/2026

April 2026 was another cold month in most of Canada. Above-normal temps were observed in the Quebec City-Windsor corridor, and BC was overall near normal.

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Patrick Duplessis @patwx.bsky.social · 01/04/2026

March 2026 was extremely cold across the territories and northern Ontario, Quebec and Labrador. The coldest month of the "winter" for many, and record-cold in Rankin Inlet, Churchill and Wabush. Meanwhile, Southern Ontario had a variable, but warm month.

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Patrick Duplessis @patwx.bsky.social · 18/03/2026

Kuujjuaq a reçu 33,2 cm de neige hier, battant ainsi son record pour une journée du mois de mars. Il s'agit de la journée la plus neigeuse depuis le blizzard de janvier 1964! #meteoQC

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Patrick Duplessis @patwx.bsky.social · 02/03/2026

February 2026 temperature anomalies across Canada. Overall warmer than normal, except Southern QC and ON and much of the territories. St. John's airport got its snowiest February on record (178 cm).

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Patrick Duplessis @patwx.bsky.social · 01/02/2026

While January 2026 was a cold one in most of Ontario and Southern Quebec, warmer temperatures dominated elsewhere. Baffin Island and Ellesmere Island had their warmest January on record, with up to 11.4° above normal for Iqaluit - improving last year's record by more than a degree!

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Patrick Duplessis @patwx.bsky.social · 06/01/2026

The northernmost station in Canada, Alert, climbed above freezing this morning to a high of 0.9°C! This is the warmest temperature recorded up there in January since records began in 1951. #Arctic Previous daily record: -13.8°C (2003) Previous January record: 0.0°C (1958)

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Reposted by Patrick Duplessis

Rick Thoman @alaskawx.bsky.social · 02/01/2026

Alaska and vicinity temperature December departures from the 1991-2020 baseline normal. Bering Sea on the warm side of normal, especially St. Lawrence Island. Cold most other regions, especially eastern Interior and the Yukon Territory. #akwx #Climate @climatologist49.bsky.social @patwx.bsky.social

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Patrick Duplessis @patwx.bsky.social · 01/01/2026

For once, December 2025 was a cold month across most of Canada. Repeated events of extreme cold in Yukon brought monthly temperatures more than 13° below normal! Coldest December since 1980 for Whitehorse and Old Crow, and since 2013 for Yellowknife.

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Patrick Duplessis @patwx.bsky.social · 01/12/2025

November 2025 was very warm overall in Canada, with record-breaking averages in some places. However, southern Ontario and Quebec managed to get below average temperatures. Most of Ontario and Quebec also had more snowfall than normal.

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Patrick Duplessis @patwx.bsky.social · 02/11/2025

Eureka, Nunavut (NEK) hit -30.5°C in the past hour, making it the first -30° of the season in Canada, close to two weeks later than normal. The average date of first -30° in Eureka for 1991-2020 is Oct 21.

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Patrick Duplessis @patwx.bsky.social · 01/11/2025

Canada had a very warm October, except in BC with near to slightly below seasonal temperatures. Record-warmest October for: Cambridge Bay -2.5° (previously -2.9 in 2021/2023) Churchill 4.7° (4.0 in 2021) Kuujjuaq 5.4° (3.8 in 2021) Nain 7.1° (5.3 in 2023) Wabush 4.9° (4.8 in 2022)

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Patrick Duplessis @patwx.bsky.social · 07/10/2025

More monthly heat records in Eastern Canada today. Close to 30°C in Nova Scotia once again!

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Patrick Duplessis @patwx.bsky.social · 06/10/2025

Several October records were broken today in Ontario and Québec, up to 31.7° in Luskville, QC (new provincial October record)! A few missed records: Ottawa 29.9° (1.0° from record of 2023) Quebec City 26.7° (1.6° from record of 1949) Moosonee 29.0° (1.0° from record of 2023)

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Patrick Duplessis @patwx.bsky.social · 01/10/2025

September 2025 was warmer than normal everywhere in Canada. The strongest anomalies were in the Prairies and territories, and it was the hottest September on record in Vancouver, Calgary and Edmonton.

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Patrick Duplessis @patwx.bsky.social · 01/09/2025

August 2025 was slightly warmer than normal overall in Canada. The warmest anomalies were observed in the Yukon, NWT, and Prairies. Meanwhile a few cold anomalies stand out in SW Ontario and parts of Nunavut.

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Reposted by Patrick Duplessis

Climatologist49 @climatologist49.bsky.social · 01/09/2025

Alaska's summer (Jun-Aug) was slightly warmer and slightly wetter than the 1991-2020 normal. @alaskawx.bsky.social

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Patrick Duplessis @patwx.bsky.social · 13/08/2025

Another all-time record was set today in Eastern Canada! 30.3° Havre-Saint-Pierre, QC (previously 30,0° 1987/07/14) 36.3° (prelim.) in Goose Bay: New August Labrador record! Very impressive 35.7° in Cartwright, too! August record for the station. #NLwx

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Patrick Duplessis @patwx.bsky.social · 13/08/2025

Even hotter than yesterday in Eastern Canada! All-time records were set at several stations, and the all-time PEI record was shattered with 38.1° at Maple Plains! 36.7° in Badger, NL tied August record for NL and all-time record for the island. 38.6° in Miramichi is 0.8° below NB all-time record. ♨️

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Patrick Duplessis @patwx.bsky.social · 12/08/2025

Here are some of the very hot temperatures recorded today in Eastern Canada... Up to 37.6°C in Miramichi, NB! A few monthly records tied/broken, and tomorrow could be hotter locally! #NBwx #meteoqc #NLwx

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Patrick Duplessis @patwx.bsky.social · 01/08/2025

July 2025 was a mixed bag in #Canada. Generally hotter than normal in the east, but slightly cooler in many regions. Northern Nunavut had the coldest anomalies, between 1° and 2°C below the 1991-2020 average.

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Patrick Duplessis @patwx.bsky.social · 01/07/2025

June 2025 was generally warmer than normal in Canada, although most stations were within 1° of their 1991-2020 normal. Atlantic Canada got the warmest anomalies, up to 3.5° above normal in St. John's, NL.

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Patrick Duplessis @patwx.bsky.social · 01/06/2025

May 2025 was a bit of a mixed bag across Canada. Very warm in the Prairies and parts of the north. Very cool in Yukon and adjacent NWT, and cooler than normal in northern QC and southern ON.

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Patrick Duplessis @patwx.bsky.social · 01/05/2025

April 2025 was generally warmer than normal across Canada, but cooler in parts of Quebec, Northern Ontario and Manitoba, and Southern Nunavut. The month was more notable for its strong temperature swings than its overall anomaly.

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Patrick Duplessis @patwx.bsky.social · 01/04/2025

March 2025 was warmer than normal for most of #Canada, except for a region extending from the NWT to Labrador, which was colder than normal. The strongest anomalies were in Northern Nunavut; up to +6.5°C for Pond Inlet.

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Patrick Duplessis @patwx.bsky.social · 03/03/2025

Meteorological winter 2025 was overall near normal for Southern QC and ON and most of the Maritimes, colder than normal in parts of the Prairies, and broadly much above normal in northern Canada.

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Patrick Duplessis @patwx.bsky.social · 02/03/2025

February 2025 was colder than normal for most Canadians, up to more than 6° below the 1991-2020 average in Southern AB and SK. Meanwhile, record-warmest February for Resolute and Alert in the extreme north.

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Patrick Duplessis @patwx.bsky.social · 18/02/2025

Dans les 5 derniers jours, #Montréal a subi deux tempêtes faisant partie des 30 bordées les plus abondantes depuis le début des données à l'aéroport. Celle de jeudi tombe au 28e rang, alors que celle de dimanche arrive 15e. #meteoqc

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Patrick Duplessis @patwx.bsky.social · 01/02/2025

January 2025 was warm for most of Canada. Warmest on record for Kuujjuaq and Iqaluit with an almost +11°C anomaly. The month was colder than normal in Southern Ontario and SE BC, and near normal at the northernmost point.

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Patrick Duplessis @patwx.bsky.social · 01/01/2025

December 2024 was very warm across much of Canada, especially in Northern QC. Slightly above normal in the Maritimes and Southern ON/QC. Slightly below normal near the Beaufort Sea coast.

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Patrick Duplessis @patwx.bsky.social · 14/12/2024

Ottawa Airport peaked at a 105.04 kPa sea-level pressure this morning, setting a new all-time record for highest pressure reading. Previous was 105.00 kPa on Feb. 13, 1981. December records are also broken today in much of eastern ON and western QC, including Montreal and Quebec City.

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Patrick Duplessis @patwx.bsky.social · 12/12/2024

Très doux tôt ce matin dans l'est du Québec, et jusqu'en après-midi au Labrador. 14,1° à Cartwright: Température la plus haute jamais enregistrée au Labrador en décembre. Au Québec: Jusqu'à 16,7° à Cap-Chat. À Terre-Neuve: 18,1° à Daniel's Harbour!

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Patrick Duplessis @patwx.bsky.social · 06/12/2024

Neige reçue au Québec depuis hier matin. Bilan final pour la majorité du sud/centre, bilan partiel dans l'est. Beaucoup de variation à travers le Grand Montréal, avec 5 cm à l'aéroport et 13 cm au centre-ville. Laurentides jusqu'à 30 cm, et plus de 30 cm dans Charlevoix et autour de Forestville.

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Patrick Duplessis @patwx.bsky.social · 01/12/2024

November 2024 was very warm for most of #Canada, and even warmest November on record for some in the north. The Prairies flipped from very warm to very cold during the month, which resulted in a cooler than normal month in the western region. Fall 2024 map to be posted later in reply.

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Patrick Duplessis @patwx.bsky.social · 20/11/2024

Very dry conditions in Central and Western Nova Scotia in the past 5 weeks. Since Oct 15, Yarmouth as only received 5.8 mm of rainfall; only 4% the normal amount (157 mm) for the same period. Halifax is also in a drought with 12% of normal rainfall. Rain is fortunately finally on the way! #NSwx

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Patrick Duplessis @patwx.bsky.social · 20/11/2024

The blocking pattern in the east is keeping mild Atlantic air in a vast area of N/NE Canada. Highest lows on record for the 2nd half of November at several locations on Nov 18-19. More records could be set today again. #NUstorm #NLwx #meteoQC

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Patrick Duplessis @patwx.bsky.social · 17/11/2024

Le mois de novembre a été jusqu'ici beaucoup plus radieux qu'à l'habitude dans le sud du Québec et de l'Ontario. Montréal a déjà accumulé près de 90% des heures d'ensoleillement normales pour un mois de novembre. Ottawa 83%. La semaine à venir sera cependant plus grise. #meteoqc

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Patrick Duplessis @patwx.bsky.social · 16/11/2024

Aujourd'hui est la journée de novembre la plus sèche à #Montréal depuis le début des relevés en 1953, avec seulement 19 % d'humidité relative à 15 h! #meteoqc

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Patrick Duplessis @patwx.bsky.social · 16/11/2024

Les Philippines se préparent à l'arrivée imminente du violent typhon Man-Yi dans le nord du pays, soufflant actuellement des vents jusqu'à 260 km/h. Il s'agit du 5e typhon à frapper le pays en 17 jours seulement!

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Patrick Duplessis @patwx.bsky.social · 01/11/2024

October 2024 was warmer than normal everywhere in Canada except in Whitehorse and Yellowknife. The warmest anomalies were recorded in the northernmost regions, with up to +7° in Resolute! Warmest October on record for Alert, beating October 2019. #wxflutter

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Patrick Duplessis @patwx.bsky.social · 01/11/2024

Yesterday's lows between 17-19°C in the Greater Montreal area were the warmest ever recorded in OCTOBER for each station (most with long POR). An incredible feat, one day away from November! #meteoQC #wxflutter

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Patrick Duplessis @patwx.bsky.social · 28/10/2024

Pour une 2e journée consécutive, l'humidité relative est descendue parmi les 3 plus basses valeurs les plus basses enregistrées en octobre aujourd'hui à Montréal. Une indication du fond d'air très froid sur le Québec en ce moment.

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