Friday, February 27, 2015
March in like a lion or lamb?
So the question of the week, and stated here in much more polite terms that is has been poised to me, when will it warm up? The answer, soon, but very slowly. It is a valid question given that this is one of the longest below 0C (32F) periods in a long time. The temperature dropped below 0C in Montreal at 1pm on January 19, 2015, by my calculations about 40 days ago. It has not risen above since. The average temperature for February so far is in the -15C (5F) range, which puts it on par to be one of the coldest months ever in this city.
Sunshine will prevail today across the St. Lawrence Valley but with cold highs of around -10C (14F). On the weekend it will turn warmer with highs forecast to be around -4C (25F) both Saturday and Sunday. Overnight lows will remain chilly, down to -18C (0F). Late in the day Sunday clouds will increase from a weak frontal system, with some light snow overnight into Monday. Amounts will range from 3-10cm across the area with the higher amounts in the Adirondacks and Green Mountains. Sunshine returns Monday into Tuesday before another low pressure area approaches form the Great Lakes. At this time it looks like snow will develop late Tuesday night in Montreal and persist into Wednesday perhaps mixing with rain. Yes I said rain, and that means our streak of below freezing weather could come to an end as early as next Wednesday. Amounts of precipitation with this storm will be in the moderate range, perhaps more than 10cm, so perhaps warnings will be required. It is still early in the forecast period, so we will have to wait and see how this system evolves.