10-day forecast for Issaquah, WA: 41° to 62°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
62°
Best day: Wednesday, October 21
51° · 0.52 in
Worst day: Saturday, October 24
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1860° / 41°0
Morning42°feels 42°
Afternoon60°feels 59°
Evening53°feels 53°
Overnight46°feels 44°
60 °
Issaquah, Sunday, 18 October
Overcast. High 60°, low 41°.
Pressure30.15 inHg
Wind4.5 mph N
Humidity67%
Visibility4.7 mi
Dew point45°
Mon, 1958° / 44°0
Morning44°feels 43°
Afternoon57°feels 56°
Evening50°feels 49°
Overnight47°feels 47°
58 °
Issaquah, Monday, 19 October
Overcast. High 58°, low 44°.
Pressure29.97 inHg
Wind0.9 mph NW
Humidity77%
Visibility6.2 mi
Dew point46°
Tue, 2059° / 44°0
Morning45°feels 43°
Afternoon59°feels 58°
Evening50°feels 49°
Overnight44°feels 44°
59 °
Issaquah, Tuesday, 20 October
Overcast. High 59°, low 44°.
Pressure30.09 inHg
Wind5.1 mph N
Humidity77%
Visibility6.2 mi
Dew point48°
Wed, 2162° / 41°0
Morning47°feels 47°
Afternoon55°feels 53°
Evening59°feels 58°
Overnight45°feels 44°
62 °
Issaquah, Wednesday, 21 October
Clear. High 62°, low 41°.
Pressure29.97 inHg
Wind3.9 mph NE
Humidity76%
Visibility—
Dew point45°
Thu, 2257° / 45°0.01
Morning48°feels 47°
Afternoon54°feels 53°
Evening54°feels 52°
Overnight47°feels 46°
57 °
Issaquah, Thursday, 22 October
Light rain. High 57°, low 45°.
Pressure30.00 inHg
Wind5.2 mph NE
Humidity72%
Visibility—
Dew point44°
Fri, 2358° / 44°0
Morning49°feels 48°
Afternoon54°feels 51°
Evening56°feels 54°
Overnight49°feels 48°
58 °
Issaquah, Friday, 23 October
Overcast. High 58°, low 44°.
Pressure30.06 inHg
Wind5.3 mph S
Humidity60%
Visibility—
Dew point39°
Sat, 2451° / 48°0.52
Morning48°feels 47°
Afternoon50°feels 50°
Evening51°feels 50°
Overnight50°feels 49°
51 °
Issaquah, Saturday, 24 October
Rain. High 51°, low 48°.
Pressure29.74 inHg
Wind6.8 mph SW
Humidity90%
Visibility—
Dew point46°
Sun, 2556° / 45°0.06
Morning47°feels 46°
Afternoon52°feels 50°
Evening50°feels 49°
Overnight50°feels 49°
56 °
Issaquah, Sunday, 25 October
Light rain. High 56°, low 45°.
Pressure29.97 inHg
Wind7.7 mph S
Humidity74%
Visibility—
Dew point43°
Mon, 2655° / 48°0.51
Morning51°feels 49°
Afternoon52°feels 51°
Evening52°feels 51°
Overnight49°feels 45°
55 °
Issaquah, Monday, 26 October
Rain. High 55°, low 48°.
Pressure29.74 inHg
Wind14.7 mph S
Humidity88%
Visibility—
Dew point48°
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 Issaquah, 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.