Frost covers a maple leaf (Twitter)
New Brunswick and most of Nova Scotia are under a frost advisory for tonight and tomorrow night.
Cold air, light winds and few clouds will allow temperatures to fall near the freezing point and patchy frost is expected.
The average last frost date in spring for Greater Moncton is 23 May.
Farmers are already suffering from tremendous losses in the region with crops such as grapes, strawberries, blueberries and apples being hit by a recent hard frost with a low of -4 C in some areas.
June has gotten off to cold start with snow flurries reported in Charlottetown this week and accumulating snow in the highlands of Cape Breton and St. John’s, Newfoundland.
Highway camera image courtesy NL Government
While not uncommon, the end of May is still late – and record breaking – for a significant snowfall of 36 cm in Gander.
A low pressure system brought strong winds and rain which turned to snow over northeast Newfoundland when the temperature fell to the freezing point.
Burgeo recorded a peak wind gust of 95 km/h as did Bonavista which also picked up 40 mm of rain.
Snowfall totals as of 3:30pm NDT:
- Gander 36 cm
- Lewisporte 26 cm
- Badger 16 cm
- Twillingate 11 cm
Whiteout conditions during a winter storm, west end Moncton, 08 March 2018 (Dearing)
Although March came in like a lamb, it behaved like a lion in the days to follow with four Nor’easters over two weeks in Southeast New Brunswick.
The first storm brought 15 cm, the second and third storms each delivered 16 cm and the fourth packed the biggest punch with 30 cm.
By 23 March, the snow cover in Greater Moncton had reached 40 cm which was the heaviest of the winter even though it was already spring.
Temperatures during the first half were mild averaging near the freezing point with brief cold snaps around the middle and near the end of the month.
MARCH 2018 ALMANAC (at Greater Moncton Int’l Airport, 1981-2010)
Average HIGH 1.3 C
Average LOW -4.7 C
AVERAGE -1.7 C (about 1.2 degrees ABOVE normal)
Extreme HIGH 9.1 C (29 Mar)
Extreme LOW -15.4 C (26 Mar)
RAINFALL 11.0 mm (almost 80 percent BELOW normal)
SNOWFALL 102.3 cm (about 40 percent ABOVE normal)
(Data courtesy Environment Canada)
A sunny but cold morning in west end Moncton, 13 Nov 2017 (Dearing)
Clear skies and an Arctic air mass lowered temperatures in Greater Moncton to a chilly -9.0 C on November 12th and 13th.
Recent data shows temperatures that low (within 2 and 3 degrees of record lows) typically don’t occur until later in the month and the thermometer failed to climb above freezing on the 12th which is also earlier than normal.
A new record low was set at the Saint John Airport when it fell to -11.3 C on the 12th.
Quite a contrast from just a week ago when several communities in New Brunswick climbed into the low 20s Celsius.
Ominous clouds near the Nova Scotia-New Brunswick border, 03 June 2017 (Dearing)
Thunderstorm activity was common throughout Southeast New Brunswick in June and all but ten days had at least a trace of rainfall.
But precipitation amounts were generally light in Greater Moncton except for two major rain events – 36.6 mm fell on 09 June along with a peak wind gust of 102 km/h and 21.2 mm fell on 24 June.
Temperatures were cool during the first week of the month with an overnight low dropping to the freezing point although frost was generally avoided thanks to cloudy skies.
Summer-like conditions arrived by mid-month and many daytime highs climbed well into the 20’s C and reached 30 C or higher three times.
JUNE 2017 ALMANAC (at Greater Moncton Int’l Airport, 1981-2010)
Average HIGH 22.4 C
Average LOW 9.9 C
AVERAGE 16.2 C (about 1.0 degree ABOVE normal)
Extreme HIGH 30.8 C (11 June)
Extreme LOW 0.0 C (06 June)
RAINFALL 77.8 mm (about 20 percent BELOW normal)
(Data courtesy Environment Canada)
Brilliant pink sky over NE Moncton, 06 June 2017 (Dearing)
At least one New Brunswick location dropped to a new low on 06 June.
Environment Canada says Kouchibouguac National Park set a new cold record of -1.7 C which broke the old minimum of -1.1 C from 1958.
Greater Moncton managed to escape frost this week thanks to cloud cover although the thermometer fell to the freezing point tying a record low.
Following a brief period of very warm air, forecasters say temperatures will reach near seasonal values for the short term.
A break in clouds over the Nova Scotia-New Brunswick border, 03 June 2017 (Dearing)
The last couple of days had near record lows in Greater Moncton with temperatures dropping to near the freezing point.
A low of 1.0 C at the airport on Monday was close to the 1947 record of 0.6 C while a low of 0.0 C on Tuesday tied the minimum from 1995.
Fortunately cloud cover prevented frost in most of New Brunswick but another risk is possible by early Wednesday.
Folklore suggests frost can be expected until the full moon in June which is this Friday the ninth.
Snow covers a vehicle in Aviemore, Scotland, UK, 25 April 2017 (BBC Weather)
Arctic air has enveloped the United Kingdom with heavy snow in Scotland and northern England and near freezing temperatures as far south as London.
Forecasters say snow in late April is not uncommon and actually fell over parts of the country around the same time last year.
Temperatures struggled to reach 10 C today after a hard frost early this morning.
This cold snap is a far cry from record breaking heat earlier this month when the thermometer climbed to 26 C in southern England and a mild March which was the fifth warmest ever for the U.K.
Fairview Knoll Park, Moncton, NB, 04 Oct 2014 (Dearing)
October 2014 definitely proved to be warmer than normal in Greater Moncton with the monthly temperature about 2.1°C above the 30-year average.
Generally speaking the month was mostly dry except for three rain events on 08 Oct, 17 Oct and an extended wet period thanks to a slow moving Nor’easter from 22-26 October.
The temperature fell below freezing only once at -1.1°C on 21 Oct which produced a light freeze but not a killing frost and not a single snowflake was recorded during the month.
OCTOBER 2014 ALMANAC (at the Greater Moncton International Airport 1981-2010)
Average HIGH 14.4°C
Average LOW 5.0°C
AVERAGE 9.7°C (about 2.1°C ABOVE the 30-year average)
Extreme HIGH 23.7°C (15 Oct)
Extreme LOW -1.1°C (21 Oct)
Rainfall 117.0 mm (slightly ABOVE the 30-year average)
(Data courtesy Environment Canada)
A frosty morning in Greater Moncton (courtesy TWN)
For the first time since late May, the thermometer dropped below the freezing point in Greater Moncton this morning to -1.1 C.
Frost was widespread although hardier vegetation appears to have been spared.
For 2014, this means Greater Moncton had above freezing temperatures for 144 days which is slightly longer than the average growing season.
Precipitation remains below normal so far this autumn but that could change with Environment Canada predicting 50-100 mm of rain across New Brunswick over the next few days.