Category
|
Apr 2018
|
1981-2010 normal
|
Anomaly
|
Rank
|
Avg high temp.
|
7.2 °C
|
10.9 °C
|
- 3.7 °C
|
42nd coldest
|
Avg mean temp.
|
0.3 °C
|
4.5 °C
|
- 4.2 °C
|
19th coldest (tie)
|
Avg low temp.
|
-6.6 °C
|
-2.0 °C
|
- 4.6 °C
|
9th coldest
|
|
|
|
|
|
Total rainfall
|
Trace (1d)
|
20.2 mm
|
- 20.2 mm (-100%)
|
3rd least rainy
|
Total snowfall
|
4.0 cm
|
10.3 cm
|
- 6.3 cm (-61%)
|
59th least snowy
|
Total precipitation
|
1.7 mm
|
30.2 mm
|
- 28.5 mm (-94%)
|
4th driest
|
|
|
|
|
|
Avg dewpoint
|
-7.7 °C
|
-2.6 °C
|
- 5.1 °C
|
Lowest on record
|
|
|
|
|
|
-20°C days
|
1 day
|
1 in 10 years
|
+ 1 day
|
15th most (tie)
|
30°C days
|
0 days
|
1 in 10 years
|
Normal
|
140th occurrence
|
|
|
|
|
|
Avg sustained wind
|
18 km/h
|
19 km/h
|
- 1 km/h
|
11th least windy (tie)
|
|
|
|
|
|
T-storm days
|
0 days
|
1 day
|
- 1 day
|
34th occurrence
|
|
|
|
|
|
- Lowest average dewpoint on record for April of -7.7°C. Old record -6.0°C in 2013.
- Apr 2 - Low maximum dewpoint of -18.7°C. Old record -17.8°C in 1954. Also the lowest on record in April (old record -17.8°C on April 2, 1954).
- Apr 13 - Low maximum dewpoint of -9.4°C. Old record -6.6°C in 1983.
- Apr 13 - Low minimum dewpoint of -15.7°C. Old record -15.0°C in 1962.
-
High of -10.6°C on April 2 was the first high in the minus double digits in April since 1997.
- Low of -20.5°C on April 3 was the coldest in April since 1997.
- First half of April was the 2nd coldest on record with a mean temperature of -6.8°C.
- 2nd longest period with snow on the ground in the past 20 years.
- April 17 - first 10C of the year - tied 11th latest.
- 178 consecutive days with minimum temperature at or below freezing (0.0C) - 8th longest and the longest since 1919-1920.
- The January to April period was the driest on record with only 28.1 mm of precipitation.