August
Other strong months: June and July
83/100 weather score
Canada · 1991–2020
Best time to visit
Markham
For Markham, August has the most comfortable weather in our climate comparison. Typical daytime highs are 26.2°C, nights average 14.6°C, and rainfall totals about 72 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthAugust
Typical daytime high26.2°C
Typical night-time low14.6°C
August rainfall72 mm
July
Other strong months: August and June
63/100 weather score
September
Other strong months: May and June
80/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
5 months fit your choices for Markham
The lowest comfort score is 5 out of 100. January, February, March, November and December share that score. In January, that is mainly because days reach only -1.9°C, 26° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Markham?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Markham?
August is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 26.2°C and 72 mm of rain.
What is the hottest month in Markham?
July is hottest in this record, with a typical daytime high of 27.1°C and a night-time low of 15.4°C.
Which month has the least rain?
February has the lowest monthly rainfall total at 51 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | -1.9°C | -10.4°C | 64 mm | 11.6 | 3.7°C | 9 h 15 | 5 | Strong coverage |
| February | -1.1°C | -10.3°C | 51 mm | 8.4 | 2.9°C | 10 h 24 | 5 | Strong coverage |
| March | 4.5°C | -5.2°C | 53 mm | 9 | 2.9°C | 11 h 47 | 5 | Strong coverage |
| April | 12.1°C | 1.2°C | 79 mm | 10 | 3.8°C | 13 h 22 | 23 | Strong coverage |
| May | 19.4°C | 7.3°C | 78 mm | 9.1 | 7.3°C | 14 h 42 | 59 | Strong coverage |
| June | 24.7°C | 13°C | 88 mm | 9.4 | 14.9°C | 15 h 27 | 81 | Good coverage |
| July | 27.1°C | 15.4°C | 88 mm | 9.2 | 19.9°C | 15 h 09 | 76 | Good coverage |
| August | 26.2°C | 14.6°C | 72 mm | 7.9 | 21.2°C | 14 h | 83 | Good coverage |
| September | 21.8°C | 10.1°C | 83 mm | 8.3 | 19.1°C | 12 h 27 | 72 | Good coverage |
| October | 14.4°C | 4.3°C | 71 mm | 9.7 | 13.1°C | 10 h 55 | 38 | Good coverage |
| November | 7.3°C | -0.8°C | 76 mm | 9.9 | 7.5°C | 9 h 35 | 5 | Good coverage |
| December | 1.3°C | -6.2°C | 63 mm | 10.6 | 4.9°C | 8 h 55 | 5 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 14.9°C13 Jan 2005 | -35.2°C16 Jan 1994 | 40 mm15 Jan 1995 | 141 mm1999 · driest 24 mm in 1989 | 29 |
| February | 14.9°C27 Feb 2000 | -26.8°C15 Feb 2015 | 36 mm22 Feb 1990 | 93 mm2013 · driest 21 mm in 1995 | 29 |
| March | 26.3°C22 Mar 2012 | -25.6°C3 Mar 2003 | 38 mm27 Mar 1991 | 116 mm1991 · driest 17 mm in 2015 | 29 |
| April | 31.7°C26 Apr 1990 | -10.6°C6 Apr 2003 | 45 mm3 Apr 2009 | 137 mm2009 · driest 29 mm in 2001 | 29 |
| May | 34.6°C29 May 2006 | -2.1°C2 May 1996 | 65 mm12 May 2000 | 150 mm2000 · driest 23 mm in 2015 | 29 |
| June | 36.6°C19 Jun 1995 | 1.9°C3 Jun 1986 | 55 mm28 Jun 2013 | 229 mm2010 · driest 23 mm in 1991 | 29 |
| July | 37.2°C7 Jul 1988 | 6.9°C3 Jul 1988 | 78 mm27 Jul 2014 | 160 mm2014 · driest 32 mm in 2005 | 29 |
| August | 37.8°C1 Aug 2006 | 4.2°C29 Aug 1986 | 71 mm15 Aug 1986 | 230 mm1986 · driest 27 mm in 2007 | 29 |
| September | 35.0°C10 Sep 2013 | -2.0°C27 Sep 1989 | 105 mm4 Sep 2012 | 214 mm1986 · driest 25 mm in 2004 | 29 |
| October | 31.0°C8 Oct 2007 | -7.4°C31 Oct 1988 | 43 mm5 Oct 1995 | 145 mm1995 · driest 24 mm in 2000 | 29 |
| November | 22.1°C9 Nov 1999 | -15.0°C21 Nov 1987 | 49 mm29 Nov 2011 | 145 mm1995 · driest 19 mm in 2012 | 29 |
| December | 18.0°C6 Dec 2001 | -26.0°C20 Dec 2004 | 43 mm3 Dec 1990 | 122 mm2008 · driest 28 mm in 2002 | 29 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 29 | 2 | 14 |
| February | 0 | 0 | 27 | 1 | 11 |
| March | <1 | 0 | 26 | 2 | 7 |
| April | <1 | 0 | 12 | 3 | 3 |
| May | 5 | <1 | 1 | 3 | <1 |
| June | 14 | 4 | 0 | 3 | 0 |
| July | 22 | 7 | 0 | 3 | 0 |
| August | 19 | 5 | 0 | 3 | 0 |
| September | 8 | 1 | <1 | 3 | 0 |
| October | <1 | 0 | 6 | 2 | <1 |
| November | 0 | 0 | 17 | 2 | 5 |
| December | 0 | 0 | 27 | 2 | 11 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 37% | 5% | 52% | -4.9–1.5°C |
| February | 0% | 30% | 4% | 38% | -4.1–1.8°C |
| March | 2% | 28% | 5% | 35% | 1.9–7.6°C |
| April | 8% | 33% | 8% | 43% | 9.7–14.0°C |
| May | 34% | 29% | 9% | 34% | 17.3–22.2°C |
| June | 59% | 32% | 11% | 41% | 23.0–26.1°C |
| July | 70% | 29% | 9% | 37% | 25.0–29.6°C |
| August | 73% | 25% | 9% | 26% | 24.0–27.7°C |
| September | 46% | 28% | 10% | 38% | 19.9–23.9°C |
| October | 11% | 32% | 8% | 40% | 12.3–15.3°C |
| November | <1% | 33% | 8% | 45% | 5.3–9.5°C |
| December | 0% | 34% | 6% | 47% | -1.7–3.8°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 6066513
- NOAA station
- CA00615HMAK · TORONTO BUTTONVILLE A
- Station distance
- 8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 24 usable years
- Daylight
- Calculated from latitude 43.87°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 28 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Markham is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work