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Weather in Newmarket for September 2025

Your guide to Newmarket weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Newmarket at the beginning of September is 26 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.4 °C by the end of September.

    • Rain 🌧️

  • Newmarket experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 51.3 mm.

    • More

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Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/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
24°
2
Mist
21°
3
Thundery outbreaks possible
28°
4
Partly cloudy
30°
5
Partly cloudy
30°
6
Thundery outbreaks possible
29°
7
Light rain shower
20°
8
Overcast
21°
9
Mist
22°
10
Mist
23°
11
Patchy rain possible
25°
12
Moderate or heavy rain shower
24°
13
Cloudy
22°
14
Overcast
23°
15
Mist
24°
16
Cloudy
25°
17
Light rain shower
23°
18
Mist
22°
19
Partly cloudy
22°
20
Cloudy
23°
21
Mist
25°
22
Mist
23°
23
Mist
21°
24
Cloudy
21°
25
Overcast
23°
26
Cloudy
21°
27
Mist
18°
28
Overcast
19°
29
Overcast
20°
30
Mist
21°

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
 24° /10° 0 mm 6
2 Sept. Mist
Mist
 21° /10° 0.3 mm 6
3 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 28° /12° 0.8 mm 7
4 Sept. Partly cloudy
Partly cloudy
 30° /15° 0 mm 8
5 Sept. Partly cloudy
Partly cloudy
 30° /16° 0 mm 8
6 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 29° /18° 7 mm 6
7 Sept. Light rain shower
Light rain shower
 20° /11° 6 mm 5
8 Sept. Overcast
Overcast
 21° /7° 0.1 mm 5
9 Sept. Mist
Mist
 22° /9° 2.4 mm 5
10 Sept. Mist
Mist
 23° /12° 0 mm 6
11 Sept. Patchy rain possible
Patchy rain possible
 25° /13° 0.4 mm 6
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 24° /13° 8.6 mm 6
13 Sept. Cloudy
Cloudy
 22° /12° 0 mm 6
14 Sept. Overcast
Overcast
 23° /12° 0 mm 6
15 Sept. Mist
Mist
 24° /10° 0 mm 6
16 Sept. Cloudy
Cloudy
 25° /12° 0 mm 6
17 Sept. Light rain shower
Light rain shower
 23° /13° 1 mm 5
18 Sept. Mist
Mist
 22° /9° 0 mm 5
19 Sept. Partly cloudy
Partly cloudy
 22° /8° 0 mm 6
20 Sept. Cloudy
Cloudy
 23° /7° 0 mm 6
21 Sept. Mist
Mist
 25° /14° 0 mm 6
22 Sept. Mist
Mist
 23° /12° 4.5 mm 5
23 Sept. Mist
Mist
 21° /12° 11.9 mm 5
24 Sept. Cloudy
Cloudy
 21° /12° 0 mm 5
25 Sept. Overcast
Overcast
 23° /13° 8.1 mm 5
26 Sept. Cloudy
Cloudy
 21° /12° 0 mm 6
27 Sept. Mist
Mist
 18° /9° 0 mm 4
28 Sept. Overcast
Overcast
 19° /11° 0 mm 4
29 Sept. Overcast
Overcast
 20° /14° 0 mm 5
30 Sept. Mist
Mist
 21° /12° 0 mm 5
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 23° 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 51.3 mm spread over approximately 8 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 💧

UV exposure in Newmarket during September

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

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Location coordinates Where is Newmarket?

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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