Honestly, if you're waking up in Union City this Friday, January 16, 2026, you're looking at a day that is basically a masterclass in "Bay Area layers."
It's clear. It's bright.
But it's also kinda chilly if you're standing in the shade.
The Real Numbers for Today
The weather in Union City today is starting off with a low of 43°F. That's the kind of temperature that makes you question why you didn't pull the extra blanket out of the hall closet last night. We’re looking at a high of 64°F later this afternoon, which is actually pretty decent for mid-January.
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You’ve got a 0% chance of rain during the day. Literally zero. So, leave the umbrella in the trunk; you won't need it. The wind is staying super mellow, too, coming from the north at about 4 mph. It’s barely a breeze, honestly.
Why It Feels Different
The humidity is sitting right around 70%. In some places, that feels sticky, but here in Union City, it just means the morning air has that crisp, heavy feel to it. The UV index is a 2, which is low, but don't let that fool you into thinking the sun isn't doing work.
The sky is expected to be sunny all through the daylight hours. Once the sun dips, it turns into a "clear" night. That sounds romantic until you realize clear skies in the winter mean all that heat escapes. The low for tonight will hit 43°F again.
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What This Means for Your Day
If you're heading out to Alvarado-Niles Road or maybe grabbing a quick bite at the Hub, you're going to want a light jacket you can ditch by 2:00 PM.
- Morning Commute: It's cold. 43°F is heater-in-the-car weather.
- Lunch Hour: This is the sweet spot. 64°F in the sun feels like 70°F if you find a spot out of the wind.
- Evening Plans: As soon as 5:00 PM hits, the temperature is going to drop like a rock. If you're staying out late, bring the coat back out.
The dew point and the lack of wind mean we might see some of that classic morning fog patches in the lower-lying areas toward the marshes, but it should burn off pretty fast.
Basically, today is a perfect day for a walk at Quarry Lakes—just don't forget that the sun sets early this time of year. While the "feels like" temperature isn't significantly different from the actual 64°F high because the wind is so low, that shade/sun transition is going to be the main thing you notice.
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Pro tip for today: Check your tire pressure. These 20-degree swings between the 43°F morning and 64°F afternoon can sometimes trigger those annoying "low pressure" sensors in your car.
Stay warm this morning and enjoy the sun while it's out. It’s a solid, dry winter day in the East Bay.
Actionable Next Steps:
- Wear a medium-weight layer that can be easily unzipped or removed by midday.
- Plan outdoor activities between 11:00 AM and 3:30 PM to catch the maximum warmth.
- Ensure pets have a warm spot inside this evening as temperatures return to the low 40s.