Warmest & Coldest Years
That's a bit above 10th place 2024, but below 1st place 2023.
Warm months were Jan (#13), May (#6), Aug (#5) & Sep (warmest on record).
Feb & Dec were below average.
At the end of November 2025 was 5th warmest, but the cold December pushed it down to 7.
The average High was also our 7th warmest, while the average Low was 14th warmest.
But together that makes 2025 #7.
You can see where the red line dips for February & December.
I only get to use this chart once a year, and here each month of the year gets a pie piece.
In 2025 February & December were colder than the 20th century average, so they get the blue trivial pursuit pieces.
The other months get various shades of orange.
For the climate stripes scarf chart 2025's 2.2°C is another red one, although obviously not as red as the record-breaking 2023.
The last time that we had a blue stripe was back in 1996, at -1.7°C colder than the 20th century average.
For the local outlying stations 2025's temperatures ranked #8 for the airport, #13 for Stony Plain, and Campsie was just #26.
Temperatures Across Canada
Across the country 2025 was Kelowna's #1 warmest on record.
Temperatures Across Canada
Dawson City, Edmonton, Calgary & St. John's were top-10.
The other cities mostly fell in the range of top 15-35.
But Quebec City was lowest with 2025 as its 56th warmest year.
Here are the climate stripes for the country's big cities.
Back in 2022 we had a few whites and one blue (Winnipeg), but 2023, 2024 & 2025 have been all pink or red.
Quebec City is the least pink of the bunch.
Kelowna's previous hottest year had been 1958, at 2.3°C warmer than their 20th century average.
2024's 2.2°C came close to catching it. But 2025 succeeded, at 2.6°C warmer.
Aug & Sep were their warmest on record, and 6 other months were top-10.
Warm & Cold Months
Across the country February & December were below-average for most of the country.
Warm & Cold Months
All of the other month were pretty unanimously above average, with a few little blips of blue, like July in Saskatchewan, and November in Ontario.
High Temperatures
For 2025 Edmonton had 230 days with Highs above our 30-year average. That included 8 warmest-records in February, May, 4 in August, and 2 in September.
2025 had 115 Highs reach 20°C.
That's the 6th most on record. Recently 2022 had 119 and 2023 had 121. 1897 & 1898 share the record with 122.
High Temperatures
2025 had 56 Highs reach 25°C, which is the 5th most on record, and the most since 1961. 1898 has the record with 64.
2025 had 14 Highs reach 30°C. That ties 1961 for 3rd most on record. The only years with more are
2024's 16 and 2021's 17.
We got a late heatwave at the end of August, which wasn't as exciting as some of the big peak-of-summer heatwaves that we've seen recently. But for as late in the year as it was, it set a bunch of new records. We talked about it more here: https://edmontonweathernerdery.blogspot.com/2025/02/the-great-deepfreezeish-of-february-2025.html
We got a late heatwave at the end of August, which wasn't as exciting as some of the big peak-of-summer heatwaves that we've seen recently. But for as late in the year as it was, it set a bunch of new records. We talked about it more here: https://edmontonweathernerdery.blogspot.com/2025/02/the-great-deepfreezeish-of-february-2025.html
4 32°C Highs in-a-row which tied the overall record.
Set 4 new daily record Highs in-a-row.
For 30°C days across the country Edmonton & Kelowna, Montréal & Moncton were top-10.
And even though Edmonton got a lot, Calgary & Saskatoon were both well below average.
Low Temperatures
For 2025 there were 214 days with above-average Lows, including 6 new warmest-records in January, Feburary & August.
Low Temperatures
The 151 below-average Lows were spread around, but included lengthy February & December deepfreezes, and a few cool weeks in July.
2025 ended up with 31 Lows of -20°C, when our average is around 25.
Most of those came from February (13) and December (13).
19 of those got to -25°C, which tied 2019. Our average is around a dozen.
2025 only had 1 Low reach -30°C, when we average around 4.
The only -30°C was -30.3°C on February 18th. For as cold as December felt, it "only" got down to -29.5°C.
2025 had two deepfreezes, in February & December. They were both long, but they weren't as long, or as cold as some of the more epic deepfreezes we got from 2018~2024.
2025 had two deepfreezes, in February & December. They were both long, but they weren't as long, or as cold as some of the more epic deepfreezes we got from 2018~2024.
We looked at them in more detail here:
Warm Winter Days
2025 had long coldsnaps in February & December, and ended up with 34 of them.
That included 16 5°C Highs, which is right on average.
Yearly Extremes
With a warmest High of 33.3°C and a coldest Low of -30.3°C Edmonton's temperature range in 2025 was 63.6°C.
That's pretty typical for modern years.
Yearly Extremes
2024, 2021 & 2020 were all around 70°C because they got hotter heatwaves and colder deepfreezes.
Records
2025 set 8 new record Highs. That's down from 2024's 11, but it ties 1934 for the 4th most record Highs.
Records
And it set 6 new record warmest-Lows. That's pretty average, and down from 2021-2024 which all set 10 or more.
Frost-Free Days
2025's final spring frost was pretty late on May 5th, while the first fall frost was just a bit late on October 4th.
Frost-Free Days
So 2025 ends up with 140 frost-free days, which is a bit below the average of 146.
2024 had 174, 2023 was up at 182, and 1980 has the record at 184.
This chart is very cramped, but it gives a sense of how the growing season varies across the country.
In 2025 most cities were pretty average, but the prairie cities (except Edmonton) were all around 2 weeks longer than average.
Edmonton versus Calgary
And finally, a quick comparison of Edmonton & Calgary.
The temperatures usually track fairly closely, although Calgary is warmer.
Edmonton versus Calgary
But something happened in December. It was a really cold month in Edmonton and across the prairies, but Calgary lucked out with just a bit below average.
That's the end of Part 1 of our 2025 Year-in-Review. Part 2 will look at precipitation, and part 3 will be all about snow.
That's the end of Part 1 of our 2025 Year-in-Review. Part 2 will look at precipitation, and part 3 will be all about snow.
