NWS, American, European side by side around Union City and nearby towns.Live rain radar →
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Next 14 hours
consensus of the three models
7-day forecast
where the models agree, and where they split
Union City, CA is at its warmest in Jul (average highs near 76°F) and coldest in Feb (lows around 42°F), with roughly 33 in of precipitation across the year. Below, compare what NWS, American, European forecast for Union City right now, and see exactly where they disagree.
Union City climate by month
average daytime high and overnight low across a typical year
Jan
57°
45°
Feb
57°
42°
Mar
58°
45°
Apr
62°
47°
May
67°
51°
Jun
72°
55°
Jul
76°
58°
Aug
75°
59°
Sep
74°
57°
Oct
75°
55°
Nov
63°
46°
Dec
59°
45°
Common questions
What's the weather in Union City today?
On this page we show what NWS, American, European each forecast for Union City today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Union City today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Union City and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Union City?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Union City forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Union City?
Jul is typically the warmest month in Union City, with average highs around 76°F.
How cold does Union City get?
The coldest month in Union City is Feb, when overnight lows average about 42°F.
How much rain does Union City get?
Union City sees roughly 33 in of precipitation a year, with Jan usually the wettest month.
The forecasts Americans check
The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.