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Newmarket Weather in September
September in Newmarket typically sees daytime highs of 23°C (73°F) and nighttime lows of 10°C (50°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Newmarket in September
Historically, September sees about 10 days of rain, with a monthly average of 79 mm (3.1 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Newmarket in September
September is a good time to be in Newmarket. Days are excellent, reaching 23°C (73°F), with nights around 10°C (50°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Newmarket in September
Enjoy a sunny month with about 195 hours of sunshine, the clear skies make Newmarket even more beautiful.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Newmarket.
Newmarket Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
23°C (73°F)
Chance of Rain
34%
Precipitation
79 mm (3.1 in)
Rainy days
10 days
Humidity
87% *
Sunshine
195 hours *
Percentage Sunshine
52% *
* Data from: Toronto, Canada (45 KM, 28 Miles).
Newmarket Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Newmarket - and find the best time to visit.
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Newmarket in September
For Newmarket in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Newmarket in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Newmarket 3-Day Forecast
More climate data for Newmarket
Temperature Rainfall Sunshine Humidity
See the full Newmarket climate overview or explore weather in Canada.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
22°C (72°F) Niagara Falls23°C (73°F) Montréal
22°C (72°F) Ottawa22°C (72°F) Quebec City
20°C (68°F) Vancouver19°C (66°F) Calgary19°C (66°F) Whistler15°C (59°F) Bucket list
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