Climate averages 1991–2020

Markham weather
in January.

A freezing month with moderate precipitation: the coolest and the joint 7th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high -1.7°C Daytime mean, January

Average low -9.5°C Night-time mean, January

Precipitation 81 mm 12 days with ≥1 mm

Daylight 9 h Sunrise to sunset, per day

January is a freezing month in Markham: daytime highs average -1.7°C and nights cool to about -9.5°C. By daytime temperature it is the coolest month of the year.

Expect about 81 mm of precipitation on roughly 12 days, which makes January a month with moderate precipitation (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 19 min on an average January day.

The nearest other city in this atlas is Pickering (11 km away). In January its highs average -2.2°C, 0.5°C cooler than Markham, with 62 mm of precipitation.

Among the 86 cities listed in Canada, Markham ranks 38th of 86 for the warmest January highs and 65th of 86 for the driest January (precipitation, lowest first). The mean January high of those 86 cities is -2.3°C; Markham is 0.6°C warmer than that mean.

From January to February, average highs rise by 0.8°C to -0.9°C, and monthly precipitation falls from 81 mm to 59 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly precipitation

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Markham climate table

1991–2020

Monthly climate averages for Markham, 1991–2020
Month	Average highHigh / low	Average low	Precipitation mm/month	Wet days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	-1.7°C-9.5°C	-9.5°C	81	11.8	9.39 h
February	-0.9°C-9.7°C	-9.7°C	59	8.7	10.410 h
March	3.9°C-4.8°C	-4.8°C	68	9.9	11.912 h
April	10.7°C1.7°C	1.7°C	92	11.0	13.413 h
May	17.5°C8.2°C	8.2°C	78	10.4	14.715 h
June	22.8°C14.1°C	14.1°C	77	10.2	15.415 h
July	25.7°C17.2°C	17.2°C	68	9.6	15.115 h
August	24.9°C16.9°C	16.9°C	67	8.9	14.014 h
September	21.1°C13.3°C	13.3°C	81	9.0	12.613 h
October	14.0°C7.1°C	7.1°C	91	11.9	11.011 h
November	7.0°C0.9°C	0.9°C	88	11.2	9.710 h
December	1.5°C-4.8°C	-4.8°C	81	12.1	9.09 h

Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

January in nearby cities

Distance from Markham

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Markham) is explained once on the Markham year overview and on the Sources, method and limits page.