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Hourly Forecast
Daylight Hours
06:53
Sunrise
19:17
Sunset
Moon
Waxing Crescent
12:23
Moonrise
20:16
Moonset
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Weather in Runcorn today, September 15, 2026
Rain features in Runcorn on September 15, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise.
The day peaks near 19°C and cools toward 14°C. The air stays humid, with relative humidity between 63% and 88% and the peak around 21:00. Expect gentle winds, highest near 15:00 at 6.6 km/h.
Afternoon showers stay in play, peaking near 80% around 20:00. Skies remain cluttered, with cover about 82% by 20:00. Visibility stays generally good near 31.7 km on average, though it can drop toward 23.3 km in thicker cloud or showers. Daylight runs from 06:53 to 19:17, lasting 12 hours 23 minutes of sunlight today.
Taken together, Runcorn looks wet enough on September 15, 2026 that flexible outdoor plans work best, with temperatures peaking near 19°C.
Frequently asked questions about weather in Runcorn
How warm does it get in Runcorn?
The warmest month in Runcorn is July, with average high temperatures of 20°C. The average temperature during this period is around 17°C.
How cold does it get in Runcorn?
The coldest month in Runcorn is January, with average low temperatures of 3°C. The average temperature during this period is around 5°C.
What is the wettest time of year in Runcorn?
The wettest month in Runcorn is September, with an average of 99mm of precipitation.
What is the driest time of year in Runcorn?
The driest month in Runcorn is April, with an average of 58mm of precipitation.
