10-day forecast for Union City, CA: 58° to 87°, with precipitation expected on 0 days. The table below breaks each day into morning, afternoon, evening and overnight.
87°
Best day: Sunday, August 9
76°
Worst day: Monday, August 17
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1085° / 63°0
Morning67°feels 66°
Afternoon85°feels 83°
Evening67°feels 67°
Overnight65°feels 64°
85 °
Union City, Monday, 10 August
Mostly clear. High 85°, low 63°.
Pressure29.85 inHg
Wind4.3 mph W
Humidity29%
Visibility6.2 mi
Dew point47°
Tue, 1187° / 61°0
Morning66°feels 65°
Afternoon87°feels 84°
Evening69°feels 68°
Overnight62°feels 61°
87 °
Union City, Tuesday, 11 August
Clear. High 87°, low 61°.
Pressure29.91 inHg
Wind3.9 mph W
Humidity28%
Visibility6.2 mi
Dew point46°
Wed, 1287° / 61°0
Morning65°feels 64°
Afternoon87°feels 84°
Evening70°feels 69°
Overnight62°feels 61°
87 °
Union City, Wednesday, 12 August
Clear. High 87°, low 61°.
Pressure29.83 inHg
Wind3.9 mph SW
Humidity32%
Visibility6.2 mi
Dew point48°
Thu, 1383° / 59°0
Morning68°feels 67°
Afternoon80°feels 79°
Evening67°feels 67°
Overnight60°feels 60°
83 °
Union City, Thursday, 13 August
Mostly clear. High 83°, low 59°.
Pressure29.83 inHg
Wind8.7 mph NW
Humidity33%
Visibility—
Dew point48°
Fri, 1480° / 59°0
Morning67°feels 67°
Afternoon78°feels 77°
Evening65°feels 64°
Overnight62°feels 62°
80 °
Union City, Friday, 14 August
Clear. High 80°, low 59°.
Pressure29.91 inHg
Wind11.3 mph NW
Humidity36%
Visibility—
Dew point49°
Sat, 1580° / 59°0
Morning68°feels 67°
Afternoon78°feels 77°
Evening65°feels 64°
Overnight64°feels 63°
80 °
Union City, Saturday, 15 August
Partly cloudy. High 80°, low 59°.
Pressure30.00 inHg
Wind10.5 mph NW
Humidity36%
Visibility—
Dew point49°
Sun, 1679° / 60°0
Morning69°feels 68°
Afternoon77°feels 77°
Evening65°feels 65°
Overnight62°feels 62°
79 °
Union City, Sunday, 16 August
Overcast. High 79°, low 60°.
Pressure30.06 inHg
Wind12.6 mph NW
Humidity40%
Visibility—
Dew point51°
Mon, 1776° / 59°0
Morning66°feels 65°
Afternoon74°feels 73°
Evening64°feels 63°
Overnight61°feels 60°
76 °
Union City, Monday, 17 August
Overcast. High 76°, low 59°.
Pressure30.06 inHg
Wind11.3 mph NW
Humidity44%
Visibility—
Dew point51°
Tue, 1877° / 58°0
Morning67°feels 66°
Afternoon76°feels 76°
Evening67°feels 67°
Overnight65°feels 65°
77 °
Union City, Tuesday, 18 August
Clear. High 77°, low 58°.
Pressure30.00 inHg
Wind10.9 mph NW
Humidity49%
Visibility—
Dew point55°
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 City, CA 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.