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Weather in Sion

San Martín Department · 750 inhabitants · Thursday, October 29 · updated 08:04

Air: Fair High storm risk · Today, Tomorrow, Sat
Rain showers
21°
Rain showers
Feels like 30°C
Wind
0 km/h
Gusts
4 km/h
Humidity
95 %
Pressure
1016 hPa
Clouds
54 %
Storm
No
Rise 05:39 Set 18:01 Day 12 h 22 min UV 8 · High

Detailed forecast

Trend
Morning
Light rain
Light rain
23°21°
Feels like 31°
Wind ↑ NE 2 km/h
Humidity 86 %
💧 3.8 mm
⚡ storm
Afternoon
Rain showers
Rain showers
25°24°
Feels like 32°
Wind ↑ NE 4 km/h
Humidity 74 %
💧 4.3 mm
⚡ storm
Evening
Rain showers
Rain showers
22°19°
Feels like 30°
Wind ↑ WSW 4 km/h
Humidity 92 %
💧 1.5 mm
10:00
Light rain
23°
1.5mm
NE 2
13:00
Rain showers
24°
3.2mm
NE 1
16:00
Rain showers
25°
1.1mm
NE 4

Weather charts for Sion · 7 days

Temperatures over 7 days

≈ Temperatures close to seasonal normals
Highs Lows Seasonal normal (1991-2020 average)
16°20°24°27°31°TodayFriSatSunMonTueWed30°19°Thu 29 Oct: max 25° · min 18° · normal 22.5°Fri 30 Oct: max 28° · min 19° · normal 22.5°Sat 31 Oct: max 27° · min 19° · normal 22.5°Sun 1 Nov: max 29° · min 19° · normal 22.5°Mon 2 Nov: max 29° · min 18° · normal 22.5°Tue 3 Nov: max 29° · min 19° · normal 22.5°Wed 4 Nov: max 30° · min 19° · normal 22.5°

Hourly detail

ThuFriSatSunMonTueWedThu17°24°31°30°18°011
Temperature (°C) Precipitation (mm) Wind (km/h)

Air quality & pollen in Sion

2/6
Fair
European Air Quality Index (EAQI) · CAMS source
PM2.512µg/m³
PM1012µg/m³

CAMS data (Copernicus) · air quality and pollen refreshed several times a day.

Rain in Sion: live radar and next-hour forecast

Will it rain in Sion? Track precipitation live on the radar and anticipate showers in the next hour — the +1 h extrapolation is based on the real movement of rain cells.

Full-screen radar · rain within the hour
Rain radar Observed, then extrapolation up to +1h (real cell movement) · drag the timeline

Moon calendar for Sion

Waning gibbous
87 % illuminated · 18.3 days
Rise 19:37 Set 06:38
Fri 30/10 79%
Sat 31/10 69%
Sun 1/11 59%
Mon 2/11 49% Last quarter
Tue 3/11 38%
Wed 4/11 28%
Thu 5/11 19%
Fri 6/11 12%
Sat 7/11 6%
Sun 8/11 2%
Mon 9/11 0%
Tue 10/11 1% New moon

Rise and set in local time (America/Lima) · phases and illumination computed by SkiesAtlas (synodic model).

Weather history for Sion

What was the weather in Sion on a past date? Pick a day — ERA5 reanalysis data (ECMWF / Copernicus C3S), available up to one week ago.

The weather in Sion

Find the full weather for Sion, San Martín Department: current conditions, forecast by time of day (morning, afternoon, evening) and a 7-day trend. Right now the sky is “rain showers” with 21 °C (feels like 30 °C) and wind at 0 km/h.

Today, temperatures range from 18 °C to 25 °C, with about 9 mm of rain, with a storm risk to watch. Forecast computed by our multi-model engine SkiesAtlas (ECMWF-AIFS, NOAA GFS, DWD ICON): cloud cover calibrated on METAR observations, convective energy (CAPE) for storms.

Nearby cities

Juanjui 55 km 23° Huicungo 39 km 21° Pajarillo 55 km 27° Polvora 30 km 21° Costa Rica 46 km 30° La Victoria 59 km 23°

Weather API for Sion

Get the Sion forecast in JSON for your website or app, plus air quality, tides and astronomy. Free API key, no credit card required.

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How is this forecast computed? Multi-model engine, verified daily against 1125 weather stations