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Summit, WA Weather
Current conditions
Observed at Pierce County-Thun Field · 1 hr ago
Forecast
10-day-
Tonight
Patchy fog after 2am. Mostly clear, with a low around 40. Northwest wind 0 to 5 mph.
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Wednesday
Patchy fog before 9am. Sunny. High near 67, with temperatures falling to around 65 in the afternoon. North northwest wind around 1 mph.
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Wednesday Night
Partly cloudy, with a low around 42. West northwest wind around 1 mph.
National Weather Service forecast updated 13 hrs ago.
Hourly
Hourly forecast- Now45°
- 2 AM44°
- 3 AM43°
- 4 AM42°
- 5 AM41°
- 6 AM41°
- 7 AM40°
- 8 AM40°
- 9 AM43°
- 10 AM49°
- 11 AM54°
- 12 PM57°
- 1 PM62°
- 2 PM65°
- 3 PM65°
- 4 PM66°
- 5 PM65°
- 6 PM63°
- 7 PM60°
- 8 PM55°
- 9 PM53°
- 10 PM51°
- 11 PM49°
- Thu12 AM48°
10-day forecast
Details- TonightOct 20Mostly Clear then Patchy Fog40°
- TodayOct 21Patchy Fog then Sunny42°67°
- ThuOct 22Partly Sunny then Chance Light Rain26%39°60°
- FriOct 23Mostly Sunny10%37°58°
- SatOct 24Chance Light Rain42%38°55°
- SunOct 25Chance Light Rain26%38°59°
- MonOct 26Mostly Sunny then Slight Chance Light Rain19%38°60°
- TueOct 27Partly Sunny then Slight Chance Light Rain17%60°
- WedOct 28Cloudy44°64°
- ThuOct 29Cloudy44°59°
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 Summit
More weather news-
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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.