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Weather in Niagara Falls, New York for September 2026

Your guide to Niagara Falls weather in September - trends and predictions

    Temperatures

  • So far, September 2026 in Niagara Falls is slightly warmer than the historical average by 1.3 °F.

  • The forecast for the next days in Niagara Falls predicts a temperature of 18.8 °F, which is cooler than the historical average.

  • In general, the average temperature in Niagara Falls at the beginning of September is 25.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.4 °F by the end of September.

    • Rain 🌧️

  • Niagara Falls experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 35.9 mm.

    • More

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

Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/14°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
72 %
Avg humidity

Niagara Falls Weather September

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

Temperatures trend during September in Niagara Falls

See the weather trend as well as the moving average line

September weather in Niagara Falls day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Mist
Mist
 27° /15° 0.2 mm 6
Sept. 2 Mist
Mist
 25° /15° 3.4 mm 5
Sept. 3 Cloudy
Cloudy
 27° /15° 0.4 mm 5
Sept. 4 Sunny
Sunny
 26° /16° 1.5 mm 6
Sept. 5 Sunny
Sunny
 28° /15° 0 mm 7
Sept. 6 Thundery outbreaks possible
Thundery outbreaks possible
 26° /16° 0.5 mm 6
Sept. 7 Light rain shower
Light rain shower
 22° /13° 4.1 mm 5
Sept. 8 Fog
Fog
 23° /11° 0 mm 4
Sept. 9 Overcast
Overcast
 24° /13° 3.3 mm 4
Sept. 10 Overcast
Overcast
 23° /15° 1.9 mm 5
Sept. 11 Cloudy
Cloudy
 24° /13° 0 mm 6
Sept. 12 Mist
Mist
 26° /13° 0.5 mm 6
Sept. 13 Overcast
Overcast
 24° /14° 1.8 mm 5
Sept. 14 Partly cloudy
Partly cloudy
 23° /12° 0.1 mm 6
Sept. 15 Mist
Mist
 25° /12° 0.1 mm 5
Sept. 16 Mist
Mist
 24° /14° 1.4 mm 5
Sept. 17 Overcast
Overcast
 25° /18° 0 mm 3
Sept. 18 Overcast
Overcast
 21° /15° 0 mm 5.4
Sept. 19 Overcast
Overcast
 15° /10° 3.2 mm 4.2
Sept. 20 Light rain shower
Light rain shower
 17° /13° 5.9 mm 1.1
Sept. 21 Overcast
Overcast
 17° /10° 4.4 mm 4
Sept. 22 Light rain shower
Light rain shower
 19° /14° 31.1 mm 4
Sept. 23 Patchy rain possible
Patchy rain possible
 20° /16° 1.5 mm 5
Sept. 24 Sunny
Sunny
 19° /13° 0.9 mm 5
Sept. 25 Patchy rain possible
Patchy rain possible
 13° /11° 0.7 mm 4
Sept. 26 Sunny
Sunny
 17° /9° 0 mm 5
Sept. 27 Sunny
Sunny
 20° /12° 0 mm 5
Sept. 28 Overcast
Overcast
 20° /15° 0 mm 5
Sept. 29 Sunny
Sunny
 22° /17° 0 mm 6
Sept. 30 Sunny
Sunny
 18° /11° 2 mm 5
Next
Important Notice
Our weather forecast for Niagara Falls 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 Niagara Falls forecast closer to your planned date for the most up-to-date weather information.
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Niagara Falls in September - FAQ

What are the expected maximum and minimum temperatures in Niagara Falls during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Niagara Falls during September?
In September, Niagara Falls can expect light to moderate rainfall, totaling 35.9 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.

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

September rainfall patterns in Niagara Falls

Explore the daily rainfall trends and prepare for Niagara Fallss September weather 💧
Typically, Niagara Falls has 8 rainy days in September with a total of 35.9 mm of rainfall.

UV exposure in Niagara Falls during September

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

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Location coordinates Where is Niagara Falls?

Get accurate weather forecasts for Niagara Falls, located at latitude 43.095 and longitude -79.057. Stay updated with localized weather information tailored for Niagara Falls.

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