Weather
Washington Weather Alert: Seattle Rain, Storm Risk Oct 27-28
Seattle, WA – Rain could become a bigger concern across the Seattle area by Wednesday, Oct. 28, as another round of unsettled weather brings widespread showers and the possibility of thunderstorms to
By Cole Barrett · 2026-10-25T11:15:21.955Z
Seattle, WA – Rain could become a bigger concern across the Seattle area by Wednesday, Oct. 28, as another round of unsettled weather brings widespread showers and the possibility of thunderstorms to the central Puget Sound region. After a wet Sunday and a relatively quieter start to the workweek, precipitation chances climb sharply Tuesday night. The approaching system could leave roads wet during Wednesday's commute, with temperatures remaining in the 50s and another period of rain expected to continue into Thursday.
According to the National Weather Service in Seattle, rain becomes likely Tuesday night, mainly after 11 p.m., with a 70% chance of precipitation and temperatures falling to approximately 45 degrees. Wednesday's outlook calls for rain before 11 a.m., followed by showers and possibly a thunderstorm after 11 a.m. Afternoon temperatures are expected to reach only 54 degrees, creating a cool, damp environment across downtown Seattle and surrounding communities.
Midweek Rain Brings Possible Thunderstorms Wednesday represents the most notable weather development in Seattle's current extended forecast, particularly because the National Weather Service specifically mentions the possibility of thunderstorms. Although the forecast does not establish a severe weather threat, embedded thunderstorms could produce brief periods of heavier rainfall. Exact rainfall totals and thunderstorm probabilities were not supplied for Wednesday, leaving uncertainty about how intense individual showers may become.
The timing could affect travel along Interstate 5, Interstate 90 and State Route 520, where wet pavement and reduced visibility may complicate driving during heavier showers. Seattle, Bellevue, Shoreline and nearby Puget Sound communities could experience changing conditions as the weather system moves through. No highway closures or specific traffic delays have been reported in the supplied forecast, but motorists should allow flexibility during periods of rain.
Rain Continues as Temperatures Cool Before Wednesday's system arrives, Seattle faces another wet Sunday, with an 80% chance of rain mainly before 1 p.m. Rainfall amounts between one tenth and one quarter of an inch are possible, while afternoon temperatures reach approximately 55 degrees. Sunday night becomes mostly cloudy with a 30% chance of rain, particularly between 11 p.m. and 5 a.m., as temperatures fall to around 46 degrees.
Monday offers a temporary reduction in precipitation, although a 30% chance of rain remains in the forecast. Temperatures should reach 56 degrees under mostly cloudy skies, with calm winds limiting additional weather impacts. Another 30% chance of rain develops after 11 p.m. Monday, followed by a slight chance of showers Tuesday morning. Tuesday afternoon could bring partly sunny conditions with highs again near 56 degrees.
The relatively quiet Tuesday afternoon may provide a useful opportunity for outdoor activities before rainfall becomes more likely late that night. Residents planning Wednesday morning commutes should monitor updated rainfall timing, especially if showers begin spreading across the region before daybreak. Travelers should also watch for changing conditions on bridges, freeway ramps and other exposed roadways during heavier precipitation.
Unsettled Pattern Gradually Eases Toward Halloween Wednesday night remains wet, with rain continuing and temperatures falling to approximately 43 degrees. Rain is also likely Thursday, when highs reach only 52 degrees, extending the unsettled pattern into the latter half of the workweek. Thursday night brings another chance of rain with lows near 41 degrees.
Conditions begin showing signs of improvement Friday, with partly sunny skies, a high near 52 degrees and only a slight chance of rain. Saturday, Oct. 31, currently looks more favorable for Halloween activities, with partly sunny skies and afternoon temperatures near 52 degrees.
The forecast does not provide Saturday evening temperatures or a detailed Halloween night outlook, so residents should check for updates before making outdoor plans.
Will Wednesday's rain and possible thunderstorms affect your commute or plans around Puget Sound?
Five Day Weather Outlook Sunday 10/25: Rain is expected mainly before 1 p.m., with an 80% precipitation chance, a high near 55 degrees and rainfall amounts between one tenth and one quarter of an inch possible; nighttime temperatures fall near 46 degrees.
Monday 10/26: Mostly cloudy skies continue with a 30% chance of rain and a high near 56 degrees; another 30% chance of rain develops after 11 p.m., with temperatures falling to approximately 47 degrees.
Tuesday 10/27: A 20% chance of rain continues before 11 a.m., followed by mostly cloudy skies and a high near 56 degrees; rain becomes likely after 11 p.m., with a 70% chance and a low near 45 degrees.
Wednesday 10/28: Rain is expected before 11 a.m., followed by showers and possibly a thunderstorm during the afternoon, with a high near 54 degrees; rain continues Wednesday night as temperatures fall to approximately 43 degrees.
Thursday 10/29: Rain remains likely throughout the day beneath mostly cloudy skies, with afternoon temperatures reaching approximately 52 degrees; another chance of rain continues Thursday night, when temperatures fall to around 41 degrees.
Extended Weather Outlook Friday, Oct. 30: A slight chance of rain remains, although partly sunny skies are expected with a high near 52 degrees. Friday night becomes partly cloudy with a slight chance of rain and a low near 40 degrees.
Saturday, Oct. 31 — Halloween: Partly sunny skies are forecast with a high near 52 degrees. No specific Saturday night temperature or precipitation probability was supplied.