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Sumner, WA Weather
Current conditions
Observed at Pierce County-Thun Field · 1 hr ago
Forecast
10-day-
Tuesday Night
Patchy fog after 1am. Mostly clear. Low around 41, with temperatures rising to around 43 overnight. South southwest wind around 3 mph.
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Wednesday
Areas of fog before 10am. Sunny, with a high near 68. West wind around 2 mph.
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Wednesday Night
Partly cloudy, with a low around 43. East northeast wind around 2 mph.
National Weather Service forecast updated 1 day ago.
Hourly
Hourly forecast- Now46°
- 2 AM45°
- 3 AM44°
- 4 AM44°
- 5 AM43°
- 6 AM43°
- 7 AM43°
- 8 AM42°
- 9 AM45°
- 10 AM51°
- 11 AM55°
- 12 PM59°
- 1 PM62°
- 2 PM65°
- 3 PM67°
- 4 PM66°
- 5 PM66°
- 6 PM64°
- 7 PM60°
- 8 PM55°
- 9 PM52°
- 10 PM51°
- 11 PM50°
- Thu12 AM48°
10-day forecast
Details- TonightOct 19Areas Of Fog42°
- TueOct 20Areas Of Fog then Mostly Sunny41°65°
- TodayOct 21Areas Of Fog then Sunny43°68°
- ThuOct 22Mostly Cloudy then Chance Light Rain48%40°61°
- FriOct 23Partly Sunny14%38°59°
- SatOct 24Chance Light Rain52%39°57°
- SunOct 25Chance Light Rain34%39°60°
- MonOct 26Mostly Sunny then Slight Chance Light Rain15%61°
- TueOct 27Light showers0.03 in43°61°
- WedOct 28Mostly sunny0.08 in47°63°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Sumner
More weather news-
10/18/26: Clear Skies Expected Today with a High of 68.7; Currently 41.7°F and Winds Up to 7.8 mph, No Precipitation.Weather Today in Sumner County: Clear sky, high 69°F, low 41°F. Winds 10 mph. 7-day outlook inside. Current conditions in Sumner County at 5:50 AM show a temperature of 41.7°F with a light wind coming from the southeast…
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Sunny Sunday, clouds move in MondayFOX 13 reporter Jennifer Dowling has your seven day forecast Seattle - Sunday’s foggy conditions in low-lying areas were gone by late morning, giving way to mostly sunny skies. Sunday's high temperatures will hit close…
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10/17/26: Clear Skies and 56.3, With Highs of 62.8 and Lows of 48; Tonight’s Low at 49.3, Winds Calming, No Precipitati…10/17/26: Clear Skies and 56.3, With Highs of 62.8 and Lows of 48; Tonight's Low at 49.3, Winds Calming, No Precipitati… Sumner County Source At 7:00 PM in Sumner County, the current temperature is 56.3°F with a wind…
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10/17/26: Clear Skies and 61, High 61.7, Low 47.1, Wind 13.5 mph, Tonight Low 48.2, Clear, Wind 8.6 mph, 7% Precip Chan…Weather Today in Sumner County: Overcast, high 62°F, low 47°F. Winds 22 mph. 7-day outlook inside. Current conditions in Sumner County at 1:51 PM show a temperature of 61.2°F with a wind speed of 13.5 mph. The sky is…
- Frost advisory for North Clark County Lowlands and South Cascades for Sunday
Tacoma News Tribune The creation of this content included the use of AI based on templates created, reviewed and edited by journalists in the newsroom. Read more on our AI policy here. At 5:21 p.m. on Saturday, the NWS…
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10/17/26: Overcast Morning with Temps in the Low 50s; High of 62 Later, Clearing Tonight with a Low Around 48Weather Today in Sumner County: Overcast, high 62°F, low 47°F. Winds 22 mph. 7-day outlook inside. Current conditions in Sumner County at 5:50 AM show a temperature of 51.8°F with overcast skies and a wind speed of 13.7…
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10/16/26: Overcast with a high of 73 and low of 50; current temp 54, wind 10.6 mph, no precipitation.Weather Today in Sumner County: Overcast, high 73°F, low 50°F. Winds 17 mph. 7-day outlook inside. At 7:00 PM in Sumner County, the current temperature is 54.5°F with winds from the west-northwest at 10.6 mph. There has…
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10/16/26: Overcast and Cool with a High of 73, Currently 60; Winds Up to 16.5 mph, Low Tonight 51.6, Precip Chance 9%.Weather Today in Sumner County: Overcast, high 73°F, low 51°F. Winds 21 mph. 7-day outlook inside. Current conditions in Sumner County at 1:51 PM show a temperature of 60.6°F with an overcast sky. The wind is blowing at…
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10/16/26: Clear Skies This Morning, High 73, Low 50 Tonight, Winds Up to 15 mph, Chance of Precipitation 16%Weather Today in Sumner County: Overcast, high 73°F, low 51°F. Winds 9 mph. 7-day outlook inside. Current conditions in Sumner County at 5:50 AM include a temperature of 68.7°F, with a light wind from the southeast at…
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10/15/26: Mainly Clear Tonight with Low of 76, High Reached 91, Wind Up to 8.5, Precip Chance 19% TodaySumner County Source At 7:00 PM in Sumner County, the current temperature is 83.7°F with a light wind from the southeast at 4.5 mph. There is no precipitation recorded, and the sky is mainly clear. Earlier today…
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedGood (33)
- ThuGood (33)
- FriGood (33)
Tacoma-Puyallup, WA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlySeattle Tacoma Area, records since 1945. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
Forecasters' discussion
From the National Weather Service office in SEW, issued 4 hrs ago
Synopsis
Dry with warmer than normal daytime temps will linger through Wednesday. A weak system Thursday will bring increased clouds, near normal temperatures and a few light showers. Dry and continued near normal temperatures Friday, followed by a chance of a weak system over the weekend.
Short Term
No changes to the forecast this evening. Dry with near-normal to slightly cooler than normal overnight lows tonight. Lighter winds into Wednesday morning will allow for more early morning patchy fog formation in sheltered locations. Morning shallow stratus/fog should lift and scatter late morning with another warm October day. A weak upper level system continues to be expected to brush the area Thursday. The main impact will be more cloud cover and near normal temperatures. High resolution ensembles like the REFS showing very limited, shortlived showers mainly in the Olympics and north Cascades Thursday afternoon and evening.
Long Term
Ensembles in fair alignment with the overall pattern Friday becoming more zonal but dry Friday. For the weekend, ensemble clusters in good agreement with the overall pattern indicating an upper level trough moving across the NE Pacific and Gulf of Alaska Friday night, then shearing into a more consolidated trough moving into British Columbia Saturday and a trailing upper level low over the eastern Pacific. The grand ensemble showing good agreement on the overall idea of this upper level trough moving south and east through British Columbia itself or along west along the BC into Western Washington Saturday night into Sunday. Nearly half (48%) of the ensemble members favor the more direct approach with a more consolidated trough. The remaining 52% show either slower more northerly track or even offshore track for the trough. The more consolidated track would result in a more organized, but likely weak system moving through the area Saturday night into Sunday, where the northerly/offshore scenarios would likely result in more limited precipitation brushing the area Sunday or even delayed into Monday. The overall pattern early next week looks fairly evenly split with 49% of the grand ensemble showing some degree of ridging early in the week, and 51% some degree of troughing.
Aviation
An upper level low continues to spin off CA with dry and stable conditions across western WA. The flow aloft is southwesterly. VFR conditions will continue this evening. Patchy, shallow, fog will likely develop in the interior Wednesday morning for a brief period of LIFR conditions. Fog will scatter out by 18- 20z for a return of VFR conditions. Light northerly surface winds around 5 kt or less will prevail Wednesday afternoon in the interior. 33/29
KSEA... VFR conditions tonight. A brief period of shallow/patchy fog is possible early Wednesday morning for LIFR conditions. Otherwise, VFR expected by the afternoon after 18z. NE winds will continue to ease tonight to around 5 kt, then light and variable Wednesday morning. Winds Wednesday afternoon will be more W to NW around 5 kt, the becoming NE in the evening. 33/29
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.