10-day forecast for Union, WA: 40° to 65°, with precipitation expected on 2 days. The table below breaks each day into morning, afternoon, evening and overnight.
64°
Best day: Wednesday, October 21
50° · 0.47 in
Worst day: Monday, October 26
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1860° / 42°0
Morning42°feels 42°
Afternoon60°feels 58°
Evening49°feels 49°
Overnight46°feels 46°
60 °
Union, Sunday, 18 October
Overcast. High 60°, low 42°.
Pressure30.15 inHg
Wind3.8 mph NE
Humidity57%
Visibility1.4 mi
Dew point42°
Mon, 1959° / 45°0
Morning46°feels 46°
Afternoon59°feels 57°
Evening49°feels 49°
Overnight46°feels 46°
59 °
Union, Monday, 19 October
Overcast. High 59°, low 45°.
Pressure29.97 inHg
Wind2.1 mph E
Humidity62%
Visibility6.2 mi
Dew point43°
Tue, 2063° / 42°0
Morning42°feels 42°
Afternoon63°feels 61°
Evening50°feels 48°
Overnight45°feels 45°
63 °
Union, Tuesday, 20 October
Clear. High 63°, low 42°.
Pressure30.06 inHg
Wind2.7 mph E
Humidity58%
Visibility6.2 mi
Dew point43°
Wed, 2164° / 42°0
Morning48°feels 47°
Afternoon57°feels 55°
Evening60°feels 59°
Overnight46°feels 46°
64 °
Union, Wednesday, 21 October
Clear. High 64°, low 42°.
Pressure30.00 inHg
Wind2 mph SE
Humidity60%
Visibility—
Dew point41°
Thu, 2258° / 44°0
Morning47°feels 47°
Afternoon54°feels 52°
Evening55°feels 54°
Overnight45°feels 44°
58 °
Union, Thursday, 22 October
Light rain. High 58°, low 44°.
Pressure29.97 inHg
Wind9.3 mph SW
Humidity72%
Visibility—
Dew point43°
Fri, 2357° / 40°0
Morning45°feels 45°
Afternoon53°feels 51°
Evening54°feels 52°
Overnight42°feels 42°
57 °
Union, Friday, 23 October
Clear. High 57°, low 40°.
Pressure30.24 inHg
Wind3.6 mph E
Humidity66%
Visibility—
Dew point40°
Sat, 2459° / 40°0
Morning43°feels 42°
Afternoon51°feels 49°
Evening55°feels 53°
Overnight49°feels 47°
59 °
Union, Saturday, 24 October
Overcast. High 59°, low 40°.
Pressure30.21 inHg
Wind4.9 mph SW
Humidity68%
Visibility—
Dew point39°
Sun, 2557° / 45°0.29
Morning47°feels 47°
Afternoon51°feels 47°
Evening54°feels 53°
Overnight47°feels 46°
57 °
Union, Sunday, 25 October
Light rain. High 57°, low 45°.
Pressure30.12 inHg
Wind11 mph SW
Humidity93%
Visibility—
Dew point47°
Mon, 2650° / 46°0.47
Morning49°feels 49°
Afternoon49°feels 48°
Evening49°feels 47°
Overnight46°feels 44°
50 °
Union, Monday, 26 October
Rain. High 50°, low 46°.
Pressure30.00 inHg
Wind6.6 mph W
Humidity97%
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 Union, 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.