Union City, CA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Union City, CA in one place.
Sunny, with a high near 88. West wind around 6 mph.
Local Weather Overview
This forecast page for Union City, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 22, 2026 4:22 AM PDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Union City, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 4:22 AM PDT
- Forecast office
- MTR
- Source
- NOAA / NWS
Daily Outlook
This Week in Union City
Wednesday looks like the warmest upcoming period in Union City at 88 degrees F.
Friday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Friday at about 14 mph WSW.
The forecast from Sep 23 through Sep 28 stays mostly dry.
Forecast Details
- Last updated
- Sep 22, 2026 4:22 AM PDT
- Coverage
- 6 days
- Time zone
- America/Los_Angeles
- Forecast office
- MTR
- Radar station
- KMUX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 60. West southwest wind around 6 mph.
Sunny, with a high near 86.
Partly cloudy, with a low around 61.
Sunny, with a high near 79.
Mostly clear, with a low around 57.
Sunny, with a high near 76.
Partly cloudy, with a low around 57.
Sunny, with a high near 74.
Mostly clear, with a low around 57.
Sunny, with a high near 81.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Sunny
|
88°F |
6 mph
W
|
|
Wednesday Night
Sep 23
|
Mostly Clear
|
60°F |
6 mph
WSW
|
|
Thursday
Sep 24
|
Sunny
|
86°F |
3 to 12 mph
WSW
|
|
Thursday Night
Sep 24
|
Partly Cloudy
|
61°F |
12 mph
SW
|
|
Friday
Sep 25
|
Sunny
|
79°F |
14 mph
WSW
|
|
Friday Night
Sep 25
|
Mostly Clear
|
57°F |
7 to 13 mph
WSW
|
|
Saturday
Sep 26
|
Sunny
|
76°F |
7 to 10 mph
WSW
|
|
Saturday Night
Sep 26
|
Partly Cloudy
|
57°F |
10 mph
SW
|
|
Sunday
Sep 27
|
Sunny
|
74°F |
12 mph
WSW
|
|
Sunday Night
Sep 27
|
Mostly Clear
|
57°F |
6 to 10 mph
WSW
|
|
Monday
Sep 28
|
Sunny
|
81°F |
5 to 9 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union City.
