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Weather in Newmarket for September 2026

Your guide to Newmarket weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Newmarket has been nearly identical to the historical average, with a temperature of 23.8 °C (showing only a slight deviation of 0 °C).

  • The forecast for the next days in Newmarket predicts temperatures to be around 18 °C, close to the historical average.

  • In general, the average temperature in Newmarket at the beginning of September is 24.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 19.3 °C by the end of September.

    • Rain 🌧️

  • Newmarket experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 73.7 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
21
Dry days
Average rainy days
9
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/12°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Newmarket Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
26°
2
Mist
24°
3
Partly cloudy
26°
4
Sunny
26°
5
Sunny
26°
6
Thundery outbreaks possible
25°
7
Light rain shower
20°
8
Overcast
21°
9
Mist
23°
10
Mist
23°
11
Patchy rain possible
24°
12
Moderate or heavy rain shower
25°
13
Cloudy
23°
14
Overcast
22°
15
Mist
23°
16
Cloudy
24°
17
Overcast
23°
18
Overcast
19°
19
Overcast
16°
20
Overcast
18°
21
Overcast
15°
22
Overcast
17°
23
Patchy rain possible
12°
24
Patchy rain possible
14°
25
Patchy rain possible
12°
26
Sunny
14°
27
Sunny
20°
28
Sunny
23°
29
Overcast
26°
30
Overcast
26°

Temperatures trend during September in Newmarket

See the weather trend as well as the moving average line

September weather in Newmarket day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 26° /12° 0.3 mm 6
2 Sept. Mist
Mist
 24° /13° 17.1 mm 5
3 Sept. Partly cloudy
Partly cloudy
 26° /13° 0.4 mm 6
4 Sept. Sunny
Sunny
 26° /14° 10.9 mm 7
5 Sept. Sunny
Sunny
 26° /13° 0.2 mm 7
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 25° /14° 3.5 mm 6
7 Sept. Light rain shower
Light rain shower
 20° /11° 3 mm 5
8 Sept. Overcast
Overcast
 21° /8° 0.1 mm 4
9 Sept. Mist
Mist
 23° /10° 4.3 mm 4
10 Sept. Mist
Mist
 23° /11° 0 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 24° /11° 0.2 mm 6
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 25° /12° 4.3 mm 6
13 Sept. Cloudy
Cloudy
 23° /12° 0.2 mm 5
14 Sept. Overcast
Overcast
 22° /11° 0 mm 6
15 Sept. Mist
Mist
 23° /11° 0 mm 5
16 Sept. Cloudy
Cloudy
 24° /11° 0 mm 5
17 Sept. Overcast
Overcast
 23° /12° 0.5 mm 4
18 Sept. Overcast
Overcast
 19° /12° 0 mm 5.2
19 Sept. Overcast
Overcast
 16° /7° 0 mm 5.6
20 Sept. Overcast
Overcast
 18° /11° 0.5 mm 3.9
21 Sept. Overcast
Overcast
 15° /6° 0 mm 4.5
22 Sept. Overcast
Overcast
 17° /8° 0 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 12° /10° 1.8 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 14° /11° 1.7 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 12° /7° 0.8 mm 4
26 Sept. Sunny
Sunny
 14° /6° 0 mm 4
27 Sept. Sunny
Sunny
 20° /7° 0 mm 6
28 Sept. Sunny
Sunny
 23° /10° 0 mm 6
29 Sept. Overcast
Overcast
 26° /16° 0 mm 6
30 Sept. Overcast
Overcast
 26° /18° 0 mm 7
Next
Important Notice
Our weather forecast for Newmarket in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Newmarket forecast closer to your planned date for the most up-to-date weather information.
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Newmarket in September - FAQ

What are the expected maximum and minimum temperatures in Newmarket during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Newmarket during September?
Moderate rainfall is anticipated in Newmarket during September, with a total of 73.7 mm spread over approximately 9 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Newmarket during September?
The average wind speed in Newmarket during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Newmarket

Explore the daily rainfall trends and prepare for Newmarkets September weather 💧
Typically, Newmarket has 9 rainy days in September with a total of 73.7 mm of rainfall.

UV exposure in Newmarket during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Get accurate weather forecasts for Newmarket, located at latitude 44.05 and longitude -79.466. Stay updated with localized weather information tailored for Newmarket.

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