10-day forecast for Keystone, WA: 55° to 92°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
92°
Best day: Monday, August 17
82°
Worst day: Saturday, August 15
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0988° / 56°0
Morning63°feels 60°
Afternoon87°feels 83°
Evening78°feels 77°
Overnight64°feels 61°
88 °
Keystone, Sunday, 9 August
Clear. High 88°, low 56°.
Pressure29.85 inHg
Wind9 mph SW
Humidity20%
Visibility6.2 mi
Dew point37°
Mon, 1087° / 55°0
Morning68°feels 66°
Afternoon84°feels 81°
Evening79°feels 79°
Overnight62°feels 60°
87 °
Keystone, Monday, 10 August
Clear. High 87°, low 55°.
Pressure29.91 inHg
Wind11.8 mph SW
Humidity24%
Visibility6.2 mi
Dew point40°
Tue, 1189° / 64°0
Morning70°feels 68°
Afternoon86°feels 83°
Evening81°feels 79°
Overnight69°feels 67°
89 °
Keystone, Tuesday, 11 August
Clear. High 89°, low 64°.
Pressure29.94 inHg
Wind9.2 mph SW
Humidity23%
Visibility6.2 mi
Dew point40°
Wed, 1287° / 64°0
Morning69°feels 67°
Afternoon84°feels 82°
Evening85°feels 82°
Overnight69°feels 67°
87 °
Keystone, Wednesday, 12 August
Clear. High 87°, low 64°.
Pressure29.85 inHg
Wind11 mph SW
Humidity30%
Visibility6.2 mi
Dew point47°
Thu, 1383° / 60°0
Morning64°feels 62°
Afternoon74°feels 73°
Evening81°feels 79°
Overnight69°feels 67°
83 °
Keystone, Thursday, 13 August
Clear. High 83°, low 60°.
Pressure29.85 inHg
Wind12.7 mph S
Humidity39%
Visibility—
Dew point45°
Fri, 1488° / 63°0
Morning68°feels 66°
Afternoon80°feels 80°
Evening85°feels 82°
Overnight72°feels 70°
88 °
Keystone, Friday, 14 August
Clear. High 88°, low 63°.
Pressure29.91 inHg
Wind5.6 mph S
Humidity20%
Visibility—
Dew point33°
Sat, 1582° / 66°0
Morning73°feels 71°
Afternoon80°feels 78°
Evening72°feels 71°
Overnight67°feels 65°
82 °
Keystone, Saturday, 15 August
Overcast. High 82°, low 66°.
Pressure29.91 inHg
Wind20 mph SW
Humidity17%
Visibility—
Dew point31°
Sun, 1689° / 62°0.01
Morning67°feels 66°
Afternoon82°feels 80°
Evening86°feels 83°
Overnight72°feels 70°
89 °
Keystone, Sunday, 16 August
Light rain. High 89°, low 62°.
Pressure30.00 inHg
Wind13.7 mph W
Humidity27%
Visibility—
Dew point41°
Mon, 1792° / 65°0
Morning70°feels 68°
Afternoon84°feels 82°
Evening90°feels 86°
Overnight76°feels 74°
92 °
Keystone, Monday, 17 August
Clear. High 92°, low 65°.
Pressure29.97 inHg
Wind9.2 mph SE
Humidity19%
Visibility—
Dew point34°
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 Keystone, 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.