Weather forecast for 10 daysArco-Íris, Brazil
10-day overview
Daily temperatures
Warmest day: tomorrow 35°C.
Coldest day: Sunday 25°C.
Coldest day: Sunday 25°C.
Chance of precipitation
Highest chance: Sunday 86%.
Long-term weather forecast
- Tuesday
- 20. Oct 2026
- min.
- 18°C
Clear
- Precip. probability: 2%
- Precipitation: 0mm
- Wind: 18km/hSE 124°
- Humidity: 49%
- UV index: 0
- Sunrise: 05:45 -03
- Sunset: 18:27 -03
- details ▼
- Wednesday
- 21. Oct 2026
- 35°C
- 20°C
Mostly Cloudy
- Precip. probability: 4%
- Precipitation: 0mm
- Wind: 20km/hESE 116°
- Humidity: 42%
- UV index: 11
- Sunrise: 05:45 -03
- Sunset: 18:27 -03
- details ▼
- Thursday
- 22. Oct 2026
- 27°C
- 20°C
Scattered Thunderstorms
- Precip. probability: 52%
- Precipitation: 8mm
- Wind: 25km/hESE 116°
- Humidity: 61%
- UV index: 5
- Sunrise: 05:44 -03
- Sunset: 18:28 -03
- details ▼
- Friday
- 23. Oct 2026
- 26°C
- 20°C
Thunderstorms
- Precip. probability: 79%
- Precipitation: 11mm
- Wind: 16km/hE 89°
- Humidity: 75%
- UV index: 7
- Sunrise: 05:43 -03
- Sunset: 18:28 -03
- details ▼
- Saturday
- 24. Oct 2026
- 32°C
- 21°C
Scattered Thunderstorms
- Precip. probability: 54%
- Precipitation: 12mm
- Wind: 18km/hNNW 341°
- Humidity: 65%
- UV index: 8
- Sunrise: 05:42 -03
- Sunset: 18:29 -03
- details ▼
- Sunday
- 25. Oct 2026
- 25°C
- 20°C
Thunderstorms
- Precip. probability: 86%
- Precipitation: 18mm
- Wind: 18km/hNW 310°
- Humidity: 82%
- UV index: 5
- Sunrise: 05:42 -03
- Sunset: 18:29 -03
- details ▼
- Monday
- 26. Oct 2026
- 29°C
- 19°C
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0mm
- Wind: 13km/hS 185°
- Humidity: 69%
- UV index: 10
- Sunrise: 05:41 -03
- Sunset: 18:30 -03
- details ▼
- Tuesday
- 27. Oct 2026
- 29°C
- 20°C
PM Showers
- Precip. probability: 36%
- Precipitation: 4mm
- Wind: 16km/hESE 110°
- Humidity: 63%
- UV index: 10
- Sunrise: 05:40 -03
- Sunset: 18:30 -03
- details ▼
- Wednesday
- 28. Oct 2026
- 28°C
- 20°C
Thunderstorms
- Precip. probability: 60%
- Precipitation: 17mm
- Wind: 15km/hE 82°
- Humidity: 69%
- UV index: 8
- Sunrise: 05:40 -03
- Sunset: 18:31 -03
- details ▼
- Thursday
- 29. Oct 2026
- 28°C
- 20°C
Thunderstorms
- Precip. probability: 60%
- Precipitation: 9mm
- Wind: 14km/hE 79°
- Humidity: 74%
- UV index: 8
- Sunrise: 05:39 -03
- Sunset: 18:31 -03
- details ▼
Looking ahead, conditions suggest a period of primarily stormy and occasionally gloomy and rainy weather is predicted.
Rainfall is predicted for Thursday through Sunday, next Tuesday through next Thursday.
Temperature differences will be noticeable across the forecast period. Highs will range from 25°C to 35°C, while fluctuations in the night’s lowest temperature will be minimal, as the overnight low will fall between 18°C and 21°C.
Wednesday is expected to be the hottest, reaching up to 35°C; Sunday will be the coldest day, with the highest temperature of 25°C.
Including the humidity's impact, the maximum feel-like temperature may increase and range between 25°C and a fiery hot 39°C.
October delivers the warmest conditions in Arco-Íris, marked by average highs of 30.8°C and lows of 19.4°C.
Rainfall is predicted for Thursday through Sunday, next Tuesday through next Thursday.
Temperature differences will be noticeable across the forecast period. Highs will range from 25°C to 35°C, while fluctuations in the night’s lowest temperature will be minimal, as the overnight low will fall between 18°C and 21°C.
Wednesday is expected to be the hottest, reaching up to 35°C; Sunday will be the coldest day, with the highest temperature of 25°C.
Including the humidity's impact, the maximum feel-like temperature may increase and range between 25°C and a fiery hot 39°C.
October delivers the warmest conditions in Arco-Íris, marked by average highs of 30.8°C and lows of 19.4°C.
Updated: Oct 20, 2026 @ 18:32:38 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
In Arco-Íris, a combination of predominantly unstable and occasionally dull and wet weather is anticipated for the next ten days.
Rainfall is anticipated on Thursday through Sunday, next Tuesday through next Thursday in Arco-Íris. With moderate precipitation of 18mm, Sunday will be the day with the most rainfall.
The maximum temperature will vary between 25°C and 35°C, while the minimum temperature will vary between 18°C and 21°C.
Including the humidity's impact, the maximum feel-like temperature will vary between 25°C and 39°C.
Including the humidity's impact, the maximum feel-like temperature will vary between 25°C and 39°C.
The hottest day will be tomorrow, with a maximum of 35°C. The coldest day will be Sunday, with a maximum of 25°C.
On Saturday, scattered thunderstorms are expected, with the potential for localized flooding in some areas.
Moderate precipitation of 12mm is anticipated on Saturday. The possibility of rainfall is 54%.
On Saturday, the maximum temperature will be 32°C, while the minimum temperature will be 21°C.
On Sunday, stormy skies are anticipated.
Moderate precipitation of 18mm is forecasted on Sunday. The likelihood of rainfall is high at 86%.
On Sunday, the maximum temperature will be 25°C, while the minimum temperature will be 20°C.
