Is This Weather Normal? – January 2019

No Comments

The main weather stories in Terrace, BC for January 2019:

  • Higher than average temperature
  • Higher than average precipitation
  • Lots of rain (at least for January)


January temperature was the 8th warmest on record, averaging +0.3°C, which is 4.0°C warmer than the 1971-2000 baseline climate. Most of the month had temperatures well above average with only a couple days near the beginning of the month that had temperatures near average (Fig. 1).


Figure 1: Daily average temperature for January 2019 in Terrace, BC (red line). The black line shows the 1971-2000 average. The two gray lines show plus/minus one standard deviation.


Precipitation in January was the 31st most on record, totaling 195mm, which was 20mm more than the 1971-2000 average. This provided a brief respite from the longer-term drought in northwest BC, but much of this precipitation (105mm, 54%) fell as rain. The cumulative values show this (Fig. 2), with total rain in 2019 (dark blue, dotted) above the 1971-2000 normal (dark blue, solid), whereas total snow in 2019 (light blue, dotted) is below normal (light blue, solid). This isn’t unheard of in January, but certainly not the norm. While high elevations mostly received snow – helping to build the winter snowpack – liquid precipitation at lower elevations isn’t available during the spring melt to come. This also made for some wet ski days at Shames Mountain!

Figure 2: Cumulative precipitation – where total precipitation (green), rain (dark blue), and rain (light blue) are added throughout the year. Solid lines show the 1971-2000 average. Dotted lines show the 2019 totals to date.


Terrace, BC Weather Forecast (Environment Canada), All data presented in this post is freely available here.


Leave a comment: