Weather experts at the Met Office have issued a yellow weather warning for heavy rain covering parts of the county from 9pm tonight (October 7) until 9am Thursday morning (October 8).
Following flooding in parts of Lancashire yesterday (Tuesday, October 6), more heavy rain is likely to hit central and southern parts of the county as well as parts of east Lancashire overnight.
Although there are currently no flood warnings in place, residents are still being warned that heavy rain could cause flooding and travel disruption.
A Met Office spokesman said: "Rain, often heavy, developing over Wales early Wednesday evening and moving east across central and some northern parts of England overnight.
"As much as 40-60 mm of rain is likely to fall over some hills and mountains in Wales, with 20-30 mm quite widely elsewhere in Wales and also over some other parts of the warning area.
"Following recent very wet weather some travel disruption and flooding is likely."
Here is the hour-by-hour forecast for Lancashire from 9pm on October 7 until 9am October 8:
9pm - 7% chance of rain
10pm - 18% chance of rain
11pm - 37% chance of rain
12pm - 57% chance of rain
1am - 76% chance of rain
2am - 89% chance of rain
3am - 95% chance of rain
4am - 98% chance of rain
5am - 94% chance of rain
6am - 82% chance of rain
7am - 68% chance of rain
8am - 52% chance of rain
9am - 30% chance of rain