Given the significant rainfall we have been experiencing this summer, how does it compare to previous years?
According to Environment and Climate Change Canada Scientist Christy Climenhaga, we have seen almost a full summer's worth of rain in the last couple of months.
"We've been seeing soggy conditions through much of southern Alberta, especially over the last 24 hours, but even so into June," Climenhaga explains. "I mean, just looking at some of the totals from yesterday, seeing 30 to 50 millimetres around the Calgary area of precipitation."
That was on top of the big rain even the area saw in June, where the Calgary area received between 50 and 80 millimetres.
Typically, Calgary gets around 232.2 millimetres of rain throughout the summer, and so far, this year, they have received 145.5 millimetres of rain.
"Now, Okotoks, you've seen about 153.6 millimetres so far in June and July, and your normal for the summer is about 182.3, so you're just about at 84 per cent of what you'd normally see through the whole summer. So, a wetter start, that's for sure."
While that is a significant amount of precipitation, Climenhaga says that two of the last five years had very wet summers.
June and July of 2020 and 2022 were quite wet, as Climenhaga says, there were between 200 and 250 millimetres of rain over those months.
"And then, on the drier side, I mean, June, July 2021, you only saw 93.4 millimetres of rain in those two months."
Both 2023 and 2024 were drier years as well.
While June and July have been wet this year, overall, it hasn't been particularly wet throughout the entire year.
"Looking season to season, the winter was very, very dry in the foothills. Incredibly dry. And the spring in much of southern Alberta is on the drier side too, so a shift towards those wetter conditions, which may end up being just close to normal, but a very stark difference to what we've seen so far in 2025."
Climenhaga says that in the Okotoks area, June can be wet, prompting it to be called Monsoon June, because of the heavy rainfall the area receives.
"You can get a system that will help bring in winds, very moist air from the east, actually, which will push up the Rockies and just dump rain, and it'll rain and rain and rain. And we did see a good setup of that in June, which is a rarer event to see that much rainfall."
While we have received a good amount of moisture this year, the rain isn't over, as there is rain predicted for the area this week.
The region has also received rainfall warnings recently, and according to Climenhaga, they are issued when an area is expected to receive around 50 millimetres or more of rain within 24 hours or 75 millimetres or more rain within 48 hours.
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