worldweather14°Cnear normal
usually 12°C–19°C
night: cooler than usual
rain: more rain than usual
wind: exceptionally strong
Weather in Chillán - 14-day forecast
Detailed weather forecast for Chillán, Chile: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Chillán
today☀️
14°💧 1.5 mm
Sun☀️
12°💧 5.6 mm
Mon☀️
14°💧 6.9 mm
Tue☀️
12°night 9°
Wed☁️
11°💧 0.1 mm
Thu☁️
13°💧 15.4 mm
Fri☀️
11°💧 0.2 mm
Sat☁️
13°💧 2.6 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Friday 11 Sept in Chillán, the forecast high is 11°C. Typical daytime temperatures at this time of year range from 13°C to 20°C, so it will be exceptionally cool. It is cooler than 91% of similar days.
12°Ccooler than usual
usually 12°C–19°C
cooler than 84% of similar days
night: warmer than usual
rain: more rain than usual
wind: typical
14°Ccooler than usual
usually 13°C–19°C
cooler than 72% of similar days
night: near normal
rain: more rain than usual
wind: typical
12°Ccooler than usual
usually 13°C–20°C
cooler than 85% of similar days
night: exceptionally warm
rain: less rain than usual
wind: stronger than usual
11°Ccooler than usual
usually 13°C–20°C
cooler than 86% of similar days
night: exceptionally warm
rain: typical rainfall
wind: stronger than usual
13°Ccooler than usual
usually 13°C–20°C
cooler than 78% of similar days
night: exceptionally warm
rain: exceptionally wet
wind: exceptionally strong
11°Cexceptionally cool
usually 13°C–20°C
cooler than 91% of similar days
night: warmer than usual
rain: typical rainfall
wind: exceptionally strong
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 16°C by day. The coolest year was 2000 (10°C) and the warmest was 2016 (21°C). The current forecast averages 12°C - lower than in 96% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
14-day forecast - Chillán
Chillán 30 & 45-day weather - long-range outlook
Next 15 days · forecast
14°
around 10° at night · days with rain: 7
Weeks 3-4 · avg for September
17°
around 5° at night · rain chance 23%
Weeks 5-7 · avg for October
20°
around 7° at night · rain chance 20%
The 30 & 45-day outlook for Chillán: the next 15 days are a numerical forecast updated daily - on average 14° by day and 10° at night. Further out we rely on multi-year climate averages: around 17° in September, and about 20° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Chillán
Saturday5 September 2026
☀️14°clear sky
Sunday6 September 2026
☀️12°clear sky
Monday7 September 2026
☀️14°clear sky
Tuesday8 September 2026
☀️12°clear sky
Wednesday9 September 2026
☁️11°overcast clouds
Thursday10 September 2026
☁️13°broken clouds
Friday11 September 2026
☀️11°clear sky
Saturday12 September 2026
☁️13°broken clouds
Sunday13 September 2026
☁️12°overcast clouds
Monday14 September 2026
☁️14°overcast clouds
Tuesday15 September 2026
🌤️16°scattered clouds
Wednesday16 September 2026
☁️18°broken clouds
Thursday17 September 2026
☀️17°clear sky
Friday18 September 2026
🌤️16°scattered clouds
Saturday19 September 2026
☁️16°overcast clouds
UV index in Chillán - is it safe to sunbathe?
Today the UV index in Chillán is 6 (moderate) - unprotected fair skin can burn in about 35 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Air quality and smog in Chillán
Air quality in Chillán is currently very good. Fine particulate PM2.5: 2.6 µg/m³, PM10: 3.3 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Chillán | 2.6 | 3.3 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-04, 22:00).
Chillán weather through the year
Upcoming public holidays in Chile: Independence Day — 18 September · Army Day — 19 September · Columbus Day — 12 October.
Nearby and related places
FAQ - Chillán weather
What is the weather like in Chillán today?
Today it is about 14° during the day and 2° at night, clear sky.
How far ahead can I check the forecast for Chillán?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.