Chilliwack (Roger Pannett/Environment Canada) – With mean temperatures for 2020 at 1.32 °C above normal, it was the 8th consecutive year with mean temperature in excess of the + 0.6°C standard deviation, continuing the warming trend which started in 1986.
Every month above average temperatures were recorded, including 5 months exceeding the standard deviation of +1.1 ⁰C to +1.4 ⁰C.
In the May to September period there were 13 hot days with maximum temperatures in excess of 30.0 ⁰C. It was the 19th consecutive year with well above the average 7 hot days, a trend never previously observed.
There was a total of 25 record breaking high temperatures in 2020 with only 6 low temperature records.
Temperature extremes for 2020 were the record- breaking maximum temperature of 35.8 ̊ C (12.1°C above normal) on August 16th and the minimum temperature of – 13.3 C (11.7 °C below normal) on January 15th.
In 2020 there were 203 frost free days compared to the average 216 days.
In January 2020, with rainfall 37% above normal and snowfall 34% above normal it was the wettest January since 2011 and the snowiest since 2012.
There were two 24-hour rainfall records. January 31st at 65.2 mm and May 30th at 31.7 mm. However, for the 8th consecutive year precipitation totals were below the 30-year average. Rainfall 14.75% below normal but snowfall 102 % above normal.
CITY OF CHILLIWACK WEATHER REPORT
2020
Data recorded by Roger Pannett, Volunteer Weather Observer for Environment Canada at Chilliwack, B.C.
| Variable | 2020 | 30 Year Average |
| Mean Maximum | 15.62 ⁰C | 14.71 C |
| Mean Minimum | 7.42 C | 5.69 C |
| Mean Temperature | 11.52 C | 10.2 C |
| Rainfall | 1,492.3 mm | 1750.7 mm |
| Snowfall | 132.1cm | 129.4 cm |
| Total Precipitation | 1,624.4 mm | 1880.1 mm |
| Days of rain | 185 days | 161 days |
| Days of snow | 17 days | 18 days |
| Total Days of Precipitation | 195 days | 174 days |
| Frosts | 33 | 57 |
| Relative humidity average | 71.25 % | . |
