Current Conditions

La Unión, Buenos Aires

43°F6°C
Partly Cloudy

Wind

NNE 6 mph9 km/h

Humidity

82%

Cloud Cover

6%

As of Tuesday, September 22, 2026 at 11:48 PM GMT-3

Today's Outlook

Night

Mostly cloudy, with a low around 43°F6°C. Breezy from the N at 10 to 13 mph15 to 20 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 64°F18°CLow 43°F6°CFeels 38°F3°CPrecip 0 in0 mmCloud 69%Wind N 12 mph19 km/hWednesday: Overcast and mild, with a high of 64°F18°C and morning low of 44°F7°C. Windy from the N at 14 to 16 mph22 to 25 km/h. Dry air. Wednesday Night: Mostly cloudy, with a low around 43°F6°C. Breezy from the N at 10 to 13 mph15 to 20 km/h.
Partly CloudyHigh 75°F24°CLow 53°F11°CPrecip 0 in0 mmCloud 52%Wind N 12 mph19 km/hThursday: Partly cloudy and warm, with a high of 75°F24°C and morning low of 53°F11°C. Breezy from the NNW at 12 to 13 mph20 to 21 km/h. Dry air. Thursday Night: Mostly cloudy, with a low around 54°F12°C. Breezy from the N at 11 to 13 mph18 to 20 km/h.
ClearHigh 81°F27°CLow 56°F14°CPrecip 0 in0 mmCloud 35%Wind W 7 mph11 km/hFriday: Mostly clear and warm, with a high of 81°F27°C and morning low of 56°F14°C. Breezy from the WSW at 6 to 7 mph10 to 12 km/h. Dry air. Friday Night: Partly cloudy, with a low around 59°F15°C. Breezy from the NW at 7 to 10 mph11 to 16 km/h.
DrizzleHigh 76°F24°CLow 54°F12°CPrecip 0.02 in0.5 mm16%Cloud 36%Wind ESE 9 mph15 km/hSaturday: Partly cloudy and warm, with a high of 76°F24°C and morning low of 54°F12°C. Breezy from the E at 10 to 12 mph16 to 20 km/h. Dry air. Saturday Night: Partly cloudy, with a low around 56°F13°C. Breezy from the ESE at 9 to 13 mph15 to 21 km/h. 16% chance of drizzle in the evening.
RainHigh 63°F17°CLow 56°F13°CPrecip 0.51 in12.9 mm75%Cloud 62%Wind E 12 mph20 km/hSunday: Mostly cloudy and mild, with a high of 63°F17°C and morning low of 56°F13°C. Breezy from the E at 13 mph21 km/h. 75% chance of rain throughout the day. Sunday Night: Mostly cloudy, with a low around 57°F14°C. Breezy from the E at 12 to 13 mph19 to 21 km/h. 45% chance of showers throughout the night.
ShowersHigh 66°F19°CLow 55°F13°CPrecip 0.09 in2.2 mm31%Cloud 67%Wind ESE 11 mph18 km/hMonday: Mostly cloudy and mild, with a high of 66°F19°C and morning low of 55°F13°C. Breezy from the ESE at 12 to 13 mph20 to 21 km/h. 17% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 56°F13°C. Breezy from the ESE at 11 to 12 mph17 to 19 km/h. 31% chance of showers throughout the night.
Light RainHigh 61°F16°CLow 55°F13°CPrecip 0.37 in9.4 mm56%Cloud 87%Wind SE 11 mph18 km/hTuesday: Overcast and mild, with a high of 61°F16°C and morning low of 55°F13°C. Breezy from the SE at 12 mph19 km/h. 56% chance of light rain throughout the day. Tuesday Night: Overcast, with a low around 55°F13°C. Breezy from the SE at 11 to 12 mph18 to 19 km/h. 55% chance of light rain throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 2364°F18°C43°F6°C
Feels 38°F3°C
0 in0 mm· —69%Partly CloudyN 12 mph19 km/h
ThursdaySep 2475°F24°C53°F11°C0 in0 mm· —52%Partly CloudyN 12 mph19 km/h
FridaySep 2581°F27°C56°F14°C0 in0 mm· —35%ClearW 7 mph11 km/h
SaturdaySep 2676°F24°C54°F12°C0.02 in0.5 mm· 16%36%DrizzleESE 9 mph15 km/h
SundaySep 2763°F17°C56°F13°C0.51 in12.9 mm· 75%62%RainE 12 mph20 km/h
MondaySep 2866°F19°C55°F13°C0.09 in2.2 mm· 31%67%ShowersESE 11 mph18 km/h
TuesdaySep 2961°F16°C55°F13°C0.37 in9.4 mm· 56%87%Light RainSE 11 mph18 km/h
WednesdaySep 3062°F17°C49°F9°C
Feels 45°F7°C
0.04 in1 mm· 13%69%DrizzleSSE 9 mph14 km/h
ThursdayOct 164°F18°C47°F9°C
Feels 44°F7°C
0.02 in0.5 mm· 8%58%Partly CloudyE 8 mph13 km/h
FridayOct 266°F19°C53°F12°C0.11 in2.9 mm· 26%76%Light RainENE 10 mph16 km/h
SaturdayOct 367°F20°C57°F14°C0.31 in7.9 mm· 40%82%Light RainENE 9 mph14 km/h
SundayOct 469°F20°C53°F12°C0.19 in4.9 mm· 30%60%ShowersSSW 9 mph14 km/h
MondayOct 567°F19°C50°F10°C
Feels 46°F8°C
0.04 in1.1 mm· 13%54%DrizzleSSW 9 mph14 km/h
TuesdayOct 666°F19°C49°F9°C
Feels 46°F8°C
0.04 in0.9 mm· 9%58%Partly CloudyESE 8 mph13 km/h
WednesdayOct 766°F19°C51°F10°C0.05 in1.2 mm· 16%63%DrizzleE 9 mph14 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 34.8756°S, 58.5419°W·Elevation: 18m·Timezone: America/Argentina/Buenos_Aires·Population: 24,293