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
07:35
Sunrise
19:16
Sunset
Moon
Waxing Gibbous
18:51
Moonrise
05:48
Moonset
Daily Forecast
Today
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Air Quality Data Available
Upgrade to access real-time air quality data for Shannon.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Shannon.
View stargazing scoreWeather in Shannon today, September 25, 2026
Shannon starts September 25, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.
The day peaks near 16°C and cools toward 12°C. Relative humidity sits between 63% and 81%, reaching its peak around 22:00. Airflow remains manageable, reaching about 5.8 km/h around 16:00.
Expect the wet theme to continue later, as rain odds reach 28% near 12:00. Cloud amounts hold near 94% around 12:00. Visibility stays generally good near 16.1 km on average, though it can drop toward 15.7 km in thicker cloud or showers. Sunrise is at 07:35 and sunset at 19:16, giving 11 hours 40 minutes of sunlight today.
Overall, Shannon on September 25, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 28% and the high sits around 16°C.
Frequently asked questions about weather in Shannon
How warm does it get in Shannon?
The warmest month in Shannon is July, with average high temperatures of 19°C. The average temperature during this period is around 15°C.
How cold does it get in Shannon?
The coldest month in Shannon is January, with average low temperatures of 3°C. The average temperature during this period is around 6°C.
What is the wettest time of year in Shannon?
The wettest month in Shannon is October, with an average of 110mm of precipitation.
What is the driest time of year in Shannon?
The driest month in Shannon is April, with an average of 67mm of precipitation.