Weather in Markham in September
In an average September, Markham sees a daily high around 21°C and a low around 11°C, based on 1980–2026 of local climate records.
| Average high | 21°C |
|---|---|
| Typical high range | 16°C to 26°C |
| Average low | 11°C |
| Typical low range | 6°C to 17°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
34°C
2013-09-10
Lowest
8°C
1993-09-29
Low
Highest
23°C
1983-09-06
Lowest
-1°C
1989-09-27
Feels-like
Highest
49°C
2013-09-10
Lowest
-7°C
1989-09-27
Humidity
Highest
20.0 g/m³
2016-09-08
Lowest
4.2 g/m³
2000-09-28
Wind
Highest
37 km/h
2020-09-07
Lowest
5 km/h
2018-09-23
Gust
Highest
92 km/h
2003-09-27
Lowest
13 km/h
2018-09-15
Precip
Wettest
165 mm
1986
Driest
33 mm
2023
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