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Rio Negro (San Carlos de Bariloche)
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Weather in Rio Negro for September 2026

Your guide to Rio Negro weather in September - trends and predictions

    Snow Forecast ❄️

  • With an average of 2 snowy days, Rio Negro usually enjoys a light touch of snow in September.

    • Temperatures

  • In general, the average temperature in Rio Negro at the beginning of September is 7.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 8 °C by the end of September.

    • Rain 🌧️

  • Rio Negro experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 75.1 mm.

Average dry days
22
Dry days
Average rainy days
6
Rainy days
Average snowy days
2
Snow days
Average temperatures
8°/0°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
73 %
Avg humidity

Rio Negro Weather September

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

Temperatures trend during September in Rio Negro

See the weather trend as well as the moving average line

September weather in Rio Negro day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
1 Sept. Patchy rain possible
Patchy rain possible
 6° /1° 0.5 mm 0 cm
2 Sept. Patchy light snow
Patchy light snow
 4° /-1° 0.4 mm 0.1 cm
3 Sept. Sunny
Sunny
 5° /0° 0 mm 0 cm
4 Sept. Sunny
Sunny
 9° /0° 0 mm 0 cm
5 Sept. Sunny
Sunny
 7° /-1° 0 mm 0 cm
6 Sept. Sunny
Sunny
 9° /-2° 0 mm 0 cm
7 Sept. Sunny
Sunny
 11° /0° 0 mm 0 cm
8 Sept. Patchy rain possible
Patchy rain possible
 8° /1° 0.2 mm 0 cm
9 Sept. Heavy snow
Heavy snow
 3° /0° 44.8 mm 19.8 cm
10 Sept. Light sleet
Light sleet
 3° /0° 4.4 mm 0 cm
11 Sept. Patchy rain possible
Patchy rain possible
 4° /-4° 0 mm 0 cm
12 Sept. Cloudy
Cloudy
 10° /0° 0.1 mm 0 cm
13 Sept. Light freezing rain
Light freezing rain
 6° /0° 1.3 mm 0 cm
14 Sept. Cloudy
Cloudy
 9° /-2° 0 mm 0 cm
15 Sept. Partly cloudy
Partly cloudy
 9° /1° 0 mm 0 cm
16 Sept. Patchy rain possible
Patchy rain possible
 9° /2° 0 mm 0 cm
17 Sept. Patchy rain possible
Patchy rain possible
 14° /1° 0.2 mm 0 cm
18 Sept. Light rain
Light rain
 10° /4° 3.7 mm 0 cm
19 Sept. Patchy light drizzle
Patchy light drizzle
 7° /0° 5.2 mm 0 cm
20 Sept. Light rain
Light rain
 7° /4° 6.9 mm 0 cm
21 Sept. Patchy rain possible
Patchy rain possible
 7° /0° 0 mm 0 cm
22 Sept. Patchy rain possible
Patchy rain possible
 4° /1° 0 mm 0 cm
23 Sept. Overcast
Overcast
 8° /-1° 0 mm 0 cm
24 Sept. Patchy rain possible
Patchy rain possible
 9° /0° 0 mm 0 cm
25 Sept. Cloudy
Cloudy
 14° /3° 0 mm 0 cm
26 Sept. Patchy rain possible
Patchy rain possible
 8° /2° 0.1 mm 0 cm
27 Sept. Patchy rain possible
Patchy rain possible
 8° /3° 0.1 mm 0 cm
28 Sept. Moderate rain
Moderate rain
 6° /1° 6.8 mm 0 cm
29 Sept. Patchy rain possible
Patchy rain possible
 4° /-2° 0.4 mm 0 cm
30 Sept. Light freezing rain
Light freezing rain
 7° /-1° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Rio Negro 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 Rio Negro forecast closer to your planned date for the most up-to-date weather information.
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Rio Negro in September - FAQ

What are the expected maximum and minimum temperatures in Rio Negro during September?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 0°.

How much rainfall should be expected in Rio Negro during September?
Moderate rainfall is anticipated in Rio Negro during September, with a total of 75.1 mm spread over approximately 6 days. Considering plans for rainy days is advisable.

Will it snow in Rio Negro in September 2026?
Rio Negro experiences an average snowfall of 19.9 cm during September, occurring over 2 days.

What are the typical wind conditions in Rio Negro during September?
The average wind speed in Rio Negro during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

Rio Negro snow forecast September 2026

Track daily snowfall levels and discover Rio Negro’s snowy potential this September ❄️
On average, Rio Negro sees 2 snowy days during September, with approximately 19.9 cm of total snowfall.

September rainfall patterns in Rio Negro

Explore the daily rainfall trends and prepare for Rio Negros September weather 💧
Typically, Rio Negro has 6 rainy days in September with a total of 75.1 mm of rainfall.
Provinces in Rio Negro
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Departamento de Bariloche
Top locations in Rio Negro
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San Carlos de Bariloche
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Location coordinates Where is Rio Negro?

Get accurate weather forecasts for Rio Negro, located at latitude -41.146 and longitude -71.308. Stay updated with localized weather information tailored for Rio Negro.

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