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 74.
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: May 24, 2026 12:26 AM PDT.
The active forecast window currently covers May 26 to May 30, 2026 for Union City, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 26 to May 30, 2026
- Latest sync
- May 24, 2026 12:26 AM PDT
- Forecast office
- MTR
- Source
- NOAA / NWS
Daily Outlook
This Week in Union City
Saturday looks like the warmest upcoming period in Union City at 78 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Tuesday at about 9 to 15 mph WSW.
The forecast from May 26 through May 30 stays mostly dry.
Forecast Details
- Last updated
- May 24, 2026 12:26 AM PDT
- Coverage
- 5 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
Clear, with a low around 54.
Sunny, with a high near 76.
Mostly clear, with a low around 55.
Mostly sunny, with a high near 72.
Partly cloudy, with a low around 54.
Sunny, with a high near 74.
Mostly clear, with a low around 54.
Sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Sunny
|
74°F |
9 to 15 mph
WSW
|
|
Tuesday Night
May 26
|
Clear
|
54°F |
6 to 15 mph
WSW
|
|
Wednesday
May 27
|
Sunny
|
76°F |
6 to 14 mph
W
|
|
Wednesday Night
May 27
|
Mostly Clear
|
55°F |
6 to 14 mph
WSW
|
|
Thursday
May 28
|
Mostly Sunny
|
72°F |
6 to 15 mph
SW
|
|
Thursday Night
May 28
|
Partly Cloudy
|
54°F |
15 mph
SW
|
|
Friday
May 29
|
Sunny
|
74°F |
9 to 14 mph
SW
|
|
Friday Night
May 29
|
Mostly Clear
|
54°F |
9 to 14 mph
SW
|
|
Saturday
May 30
|
Sunny
|
78°F |
9 to 14 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Union City.
