April 2025 Review

Suddenly it's May, so it's time for our big look back at April 2025 weather in Edmonton.

April 2025 ends up as a pretty warm one. 

The average High of 13.3°C was the 30th warmest on record, and average Low of 1.3°C was 15th warmest. 

That made it our warmest April since 2016.

April is one of the months, along with October, where our average Highs haven't changed much over the past century. Both have stayed a little below 11°C going back to 1880. The Lows for both have increased by around 2.5°C, though.





High Temperatures

April 2025 had 22 above-average Highs, and 8 below-average. The 6th & 26th got near the top of our 30-year range, although they weren't close to any all-time records. And none of the below-average Highs were particularly cold.

April averages 2 below-freezing Highs, and 2025 didn't have any. The last April that did get some was 2022, with 5. 

April also averages 3 20°C Highs, and this year we got 2 (although 2024 had none).

20°C Highs often start to show up around mid-April. The first one of 2025 was April 26th. 

Before that our last one was back on October 8th. So we went 198 days below 20°C, which is fairly typical. 

Recently 2022 went just 173 days, while 2017 went 218.



Low Temperatures

April 2025's Lows looked a lot like the Highs, with 20 above-average and 10 below-below average. A few days were up at the top of our 30-year range, and the below-average Lows weren't particularly cold.

April averages around 15 below-freezing Lows, and 2025 had 9. The coldest was -7.4°C on the 4th. 

April average 2 Lows above 5°C, and 2025 had 7.



Final Spring Frost

The average date of the final spring frost at Blatchford is May 4th. 

Right now the last frost was on April 18th, although there's still plenty of time for the weather to turn again. 

But 2024's final frost was April 20th, 2023's was the 22nd, and 2020's was the 19th.



Warm & Cold Months

April 2025 gets a medium sized orange bubble. The average High of 13.3°C was 2.7°C warmer than the 20th century average. The average Low of 1.3°C was also 2.7°C warmer. And it was the warmest April since 2016.



Across Canada

April follows March as another warm month across the whole country. Dawson City was the most above average with a High 3.2°C above its 20th century average, and Edmonton's 2.7°C was second.



Snow

In April we average 14cm of snowfall. In 2025 we got...0cm! 

The airport has only had 1 other snowless April, back in 1998.

When Blatchford still recorded snow it was snowfree in 2005, 1998, 1984, 1949, 1919, 1906 & 1905 (and 6 more before 1900, which seems suspect)

Quite a few other cities did get snow in April. Charlottetown was up at 43cm, Halifax had 43cm, and Calgary got 11cm.

By the end of April Edmonton averages 114cm of total snowfall. After the snowfree April the winter of 2024-2025 is stuck at 105cm. But in May we get more snow about half of the time.

At the end of the winter Charelottetown takes the top spot with 450cm of snow, well ahead of Ottawa, St. John's and Moncton around 250cm. 

Calgary was the biggest outlier here, as its 83.5cm was a bottom-10 year.



Snowdepth

The airport's last day with snow on the ground was April 4th. Stony Plain's was the 6th. Elk Island's was basically the 10th, although it bounced around a bit. Campsie was at 1cm on the 8th, but then also bounced around.

The airport has snow on the ground from November 22nd to April 4th. That's 133 days in-a-row, which is fairly typical. For Stony Plain it was 99 days (it originally got to 0cm in March), and Elk Island was 138 days.



Precipitation

In April we average 27mm of combined precipitation (rain+snow). 

2025 was low, with 4.9mm at Blatchford, and 12.8mm at the airport and Stony Plain. Campise (100km NW) was right on average. 

Blatchford's 4.9mm was still more than April 2019, 2020 or 2021.

By the end of April we average around 75mm of precipitation for the year. 

Right now the stations range from 75mm at the airport to 85mm at Blatchford. 

Things usually pick up from mid-May through mid-August, with about 60% of our total precipitation for the year.

While Edmonton has had 75mm of precipitation so far in 2025, and Calgary is at 51mm, at the other end St. John's is up at 443mm, Halifax has 385mm, and Vancouver has 351mm.



May

For May we average a week or two of days above 20°C, and quite often we will reach 30°C. 

About a third of the time our final frost is in April, but May often has a few of frosty nights. 

And the airport recorded May snow in 2022, 2021, 2020, 2019, 2015...