10-day forecast for Summit, WA: 50° to 88°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
88°
Best day: Monday, August 17
76°
Worst day: Wednesday, August 12
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0976° / 51°0
Morning55°feels 54°
Afternoon76°feels 75°
Evening71°feels 70°
Overnight55°feels 54°
76 °
Summit, Sunday, 9 August
Mostly clear. High 76°, low 51°.
Pressure30.03 inHg
Wind3.5 mph W
Humidity40%
Visibility6.2 mi
Dew point50°
Mon, 1083° / 50°0
Morning56°feels 55°
Afternoon81°feels 80°
Evening74°feels 73°
Overnight54°feels 54°
83 °
Summit, Monday, 10 August
Clear. High 83°, low 50°.
Pressure30.09 inHg
Wind3.2 mph W
Humidity43%
Visibility6.2 mi
Dew point51°
Tue, 1185° / 51°0
Morning58°feels 57°
Afternoon83°feels 81°
Evening73°feels 73°
Overnight54°feels 53°
85 °
Summit, Tuesday, 11 August
Clear. High 85°, low 51°.
Pressure30.09 inHg
Wind3 mph W
Humidity40%
Visibility6.2 mi
Dew point51°
Wed, 1276° / 57°0
Morning61°feels 60°
Afternoon65°feels 65°
Evening67°feels 67°
Overnight57°feels 57°
76 °
Summit, Wednesday, 12 August
Overcast. High 76°, low 57°.
Pressure30.06 inHg
Wind6 mph SW
Humidity77%
Visibility6.2 mi
Dew point57°
Thu, 1377° / 55°0
Morning63°feels 62°
Afternoon73°feels 73°
Evening67°feels 66°
Overnight58°feels 57°
77 °
Summit, Thursday, 13 August
Overcast. High 77°, low 55°.
Pressure30.00 inHg
Wind4.1 mph NW
Humidity44%
Visibility—
Dew point49°
Fri, 1482° / 51°0
Morning64°feels 63°
Afternoon79°feels 78°
Evening69°feels 68°
Overnight59°feels 58°
82 °
Summit, Friday, 14 August
Overcast. High 82°, low 51°.
Pressure29.94 inHg
Wind7.9 mph N
Humidity33%
Visibility—
Dew point46°
Sat, 1581° / 54°0
Morning65°feels 64°
Afternoon74°feels 74°
Evening69°feels 68°
Overnight60°feels 59°
81 °
Summit, Saturday, 15 August
Overcast. High 81°, low 54°.
Pressure30.00 inHg
Wind6.6 mph W
Humidity46%
Visibility—
Dew point51°
Sun, 1685° / 54°0
Morning66°feels 65°
Afternoon82°feels 80°
Evening71°feels 71°
Overnight61°feels 60°
85 °
Summit, Sunday, 16 August
Overcast. High 85°, low 54°.
Pressure30.03 inHg
Wind6.6 mph NW
Humidity27%
Visibility—
Dew point43°
Mon, 1788° / 55°0
Morning68°feels 66°
Afternoon85°feels 82°
Evening74°feels 73°
Overnight63°feels 62°
88 °
Summit, Monday, 17 August
Partly cloudy. High 88°, low 55°.
Pressure30.00 inHg
Wind6.4 mph NW
Humidity24%
Visibility—
Dew point42°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Summit, WA around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.