Climate Stats: Vancouver

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Snowiest Days in Vancouver History GRAPH.PNG

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Snowiest Months in Vancouver History GRAPH.PNG

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Coldest Months in Vancouver History GRAPH.PNG

[Glacier]

Snowiest Days in Vancouver History GRAPH.PNG

Nov 9th, 1911 is a VERY early snowfall, especially one that large!

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Updated January 20th, 2024.

Days per year with a high temp at or below -2c in Vancouver.png

Days per year with a high temp at or below -4c in Vancouver.png

[Abby_wx]

Extreme cold seems rare after 1996. Glad I was alive to experience the winters in the 80's and 90's, since it doesn't look like they'll be coming back anytime soon.

[Glacier]

Days per year with a high temp at or below -4c in Vancouver history.PNG

Jan 1950 sticks out like a sore thumb, but I think you need to combine Dec with Jan of the next year, which would give you 9 for 1969 given that the cold weather started in December.

Fun fact, 70% of the all -30C days in Kamloops that have occurred in the life of my parents (born in the 1940s) occurred in just two winters -- 1949/50 and 1968/69. It would probably be similar for Vancouver if we adjusted the threshold right.

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Consecutive days with no measurable precip in Vancouver (1898-present):


1. Jun 14 - Aug 10, 1951 (58 days)

2. Jul 18 - Sep 8, 1986 (53 days)

3. Jul 2 - Aug 12, 1960 (42 days)

4. Jul 8 - Aug 17, 1990 (41 days)

5. Jul 13 - Aug 21, 1936 (40 days)

6. Jul 12 - Aug 13, 1979 (33 days)
6. Jun 29 - Jul 31, 2013 (33 days)

8. Jun 30 - Jul 31, 1985 (32 days)
8. Jul 4 - Aug 4, 2010 (32 days)
8. Jul 10 - Aug 10, 2018 (32 days)

[Canada Goose]

https://twitter.com/ThierryGooseBC/stat ... 0981787650

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Have summers gotten drier? As we know, our climate experiences a Mediterranean-like precipitation pattern with large (and sometimes extreme) variation from winter to summer. Although some anomalously dry June-September periods have occurred over the period of record, there is little indication of any meaningful increase or decrease in frequency for the Vancouver area. This could very well change in the future, but the signal is seemingly muted for now. At least according to the data.

*Note: First graph is just YVR data over the entire period of record at the station (1937-2020).
**Note2: For the second graph, I used the old Steveston station data (1896-1936) as the predecessor to the YVR data (1937-2020), since it's closer (7km) to sea island than the old downtown station (11km). 1907 data is from the old Ladner station (closest station to Steveston) as precipitation records that year were very dubious.
***Note3: Lastly, for the third graph, I used the Vancouver PMO (downtown) station data (1898-1936) as the predecessor to the YVR data (1937-2020). Steveston station data is used for years with missing records (Jun/Aug/Sep 1899 and all four months in 1904). While there is a fairly evident downward trend in rainfall when using this station as a predecessor to YVR, that can be easily explained with location difference (11km further north = greater precipitation averages due orographic effects) rather than an indicator of elevated summer drought frequency over the period of record.

June - September precip at YVR 1937-2020.PNG

June - September precip at Steveston & YVR 1896-2020.PNG

June - September precip at Vancouver PMO & YVR 1899-2020.PNG

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July&August precip at YVR.PNG

July&August precip at Steveston & YVR.PNG

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Annual Snowfall in Vancouver 1898-2021.png

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Update1:

June - September precip at Steveston & YVR 1896-2022.png

Update2:

July&August precip at Steveston & YVR 1896-2022.png

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June rainfall at Steveston & YVR 1896-2022.png

July rainfall at Steveston & YVR 1896-2022.png

August rainfall at Steveston & YVR 1896-2022.png

September rainfall at Steveston & YVR 1896-2022.png

[Typeing3]

Crossposted from October thread.

Driest Octobers (Vancouver)
#1 -- 2002: 18.3mm

#2 -- 1987: 20.4mm

#3 -- 1991: 24.2mm

#4 -- 1897: 29.2mm

#5 -- 1907: 30.7mm

#6 -- 1911: 31.5mm

#7 -- 1952: 35.3mm

#8 -- 1916: 37.3mm

#9 -- 2013: 37.4mm

#10 -- 1964: 42.7mm

#11 -- 1923: 43.7mm

#12 -- 1978: 45.4mm

#13 -- 1922: 47.2mm

#14 -- 1986: 49.2mm

#15 -- 1917 and 1954 : 49.8mm



Data: Steveston (1896-1936) + YVR (1937-2021)




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Driest September + Octobers (Vancouver)
#1 -- 1991 32.8mm

#2 -- 1916: 48.2mm

#3 -- 1987: 48.8mm

#4 -- 2002: 52.9mm

#5 -- 1952: 55.9mm

#6 -- 1897: 63.2mm

#7 -- 1925: 65.8mm

#8 -- 1974: 74.7mm

#9 -- 1993: 75.2mm

#10 -- 1919: 75.7mm

#11 -- 1929: 83mm

#12 -- 1954: 96.8mm

#13 -- 1918: 97mm

#14 -- 2006: 97.2mm

#15 -- 1942: 98.8mm

#16 -- 1911: 99.6mm

#17 -- 1923: 100.1mm

#18 -- 1917: 101.9mm

#19 -- 1935: 103.4mm

#20 -- 1989: 107.6mm



Data: Steveston (1896-1936) + YVR (1937-2021)