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
06:21
Sunrise
18:20
Sunset
Moon
Waxing Gibbous
15:08
Moonrise
01:47
Moonset
Daily Forecast
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Air Quality Data Available
Upgrade to access real-time air quality data for Onna.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Onna.
View stargazing scoreWeather in Onna today, September 21, 2026
Plan for bright conditions in Onna on September 21, 2026, though cloud cover thickens for a spell near 09:00. The day as a whole still leans toward sunshine. Morning skies stay relatively clear, holding cloud close to 35% near 09:00. The early part of the day favours being outside.
The temperature range runs from about 27°C up to 28°C. Expect humidity between 63% and 77%, most humid near 06:00. Airflow remains manageable, reaching about 9.1 km/h around 06:00.
Expect a more open afternoon, with limited cloud around 34% by 21:00. Residual damp risk should be lower than earlier. Expect visibility around 16.1 km. Sunrise is at 06:21 and sunset at 18:20, giving 11 hours 59 minutes of sunlight today.
Taken together, settled sunshine in Onna on September 21, 2026 makes outdoor timing easier, with highs near 28°C.
Frequently asked questions about weather in Onna
How warm does it get in Onna?
The warmest month in Onna is August, with average high temperatures of 29°C. The average temperature during this period is around 28°C.
How cold does it get in Onna?
The coldest month in Onna is January, with average low temperatures of 17°C. The average temperature during this period is around 18°C.
What is the wettest time of year in Onna?
The wettest month in Onna is June, with an average of 272mm of precipitation.
What is the driest time of year in Onna?
The driest month in Onna is February, with an average of 98mm of precipitation.
