See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:33
Sunrise
17:40
Sunset
Moon
Waxing Gibbous
16:55
Moonrise
04:42
Moonset
Daily Forecast
Thursday
Today
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Air Quality Data Available
Upgrade to access real-time air quality data for Unión.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Unión.
View stargazing scoreWeather in Unión today, September 25, 2026
Sunshine leads the day in Unión on September 25, 2026, with a patch of cloud building near 02:00. The broader outlook stays fair despite that temporary thickening. Morning skies stay relatively clear, holding cloud close to 44% near 02:00. The early part of the day favours being outside.
Expect highs of 34°C and cooler readings close to 22°C. Relative humidity sits between 51% and 89%, reaching its peak around 04:00. Winds stay light, near 4.7 km/h by 23:00, so the day feels still more than breezy.
Through the afternoon skies look more workable, with cloud near 25% around 14:00. Later outdoor plans have a clearer window than the morning may have suggested. Expect visibility around 16.1 km. The sun rises at 05:32 and sets at 17:40, for a total of 12 hours 8 minutes of sunlight today.
Overall, Unión on September 25, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 34°C.
Frequently asked questions about weather in Unión
How warm does it get in Unión?
The warmest month in Unión is January, with average high temperatures of 33°C. The average temperature during this period is around 28°C.
How cold does it get in Unión?
The coldest month in Unión is July, with average low temperatures of 14°C. The average temperature during this period is around 19°C.
What is the wettest time of year in Unión?
The wettest month in Unión is October, with an average of 187mm of precipitation.
What is the driest time of year in Unión?
The driest month in Unión is July, with an average of 39mm of precipitation.