#1 - Record-Breaking December Warmth Finishes Off 9th Warmest Year Since 1873
Remarkable warmth started December across southern Manitoba. 8 to 10
days in the first half of the month exceeded the freezing mark in
Winnipeg, above the normal of 4 days for the month. 14-consecutive days
from the 3rd to 16th never dropped below -9°C at Winnipeg airport,
amazing when you consider this was close to the normal high.
Temperatures reached 7°C downtown and 4°C at the airport on the 3rd, one
of the warmest days of the month. The only record broken during the
warm spell was on December 9 when a high of 5.6°C at the airport broke
the old record of 5.1°C in
1990.
The
warmth was most impressive where there was no snow cover. 3 to 7 cm of
snow was leftover from November in the Winnipeg area and this limited
temperature. Areas without snow cover southwest of the city and in
southwestern Manitoba were much warmer. Many locations reached double
digits and in some cases more than once. In
Morden,
four days exceeded 10°C, three of which were record highs. The high of
14.2°C on December 4 was the third warmest on record in December since
1904. Some thermometers reportedly reached
15°C, more typical of late September or early October. No snow was on the ground at the time. A similar milestone was reached in
Brandon with a high of 11.1°C on the 4th, the third warmest temperature in December since 1890.
The first half of December (December 1 to 15) averaged -3.0°C at Winnipeg airport, the second warmest first half of December on record since 1872. The warmest was in
1913 with an average of -2.1°C. The month as a whole averaged -8.1°C, tied with
2011 for
9th warmest December since 1872.
A warm December was a fitting end to a warm year.
2015 averaged 4.2°C, the 9th warmest year on record since 1873. Highs averaged 10.1°C, tied 7th warmest. This was only the 9th year
since 1873 to see highs averaging in the double digits and the 3rd in
the last 10 years.