Hourly Weather Forecast - Union City, CA

12 AM
42°F
0%
5mph
NE
Mostly Clear
Humidity
87%
Feels like
39°F
Dew Point
38°F
1 AM
41°F
0%
5mph
NE
Partly Cloudy
Humidity
87%
Feels like
38°F
Dew Point
38°F
2 AM
41°F
0%
4mph
NE
Partly Cloudy
Humidity
88%
Feels like
38°F
Dew Point
38°F
3 AM
41°F
0%
4mph
ENE
Partly Cloudy
Humidity
89%
Feels like
38°F
Dew Point
38°F
4 AM
41°F
0%
4mph
ENE
Partly Cloudy
Humidity
89%
Feels like
39°F
Dew Point
38°F
5 AM
42°F
0%
4mph
E
Partly Cloudy
Humidity
90%
Feels like
39°F
Dew Point
39°F
6 AM
42°F
0%
5mph
E
Partly Cloudy
Humidity
92%
Feels like
39°F
Dew Point
40°F
7 AM
43°F
0%
5mph
ESE
Partly Cloudy
Humidity
91%
Feels like
40°F
Dew Point
40°F
7:15 AM
8 AM
44°F
0%
5mph
SE
Partly Cloudy
Humidity
91%
Feels like
41°F
Dew Point
41°F
9 AM
45°F
0%
4mph
SSW
Hazy
Humidity
91%
Feels like
43°F
Dew Point
43°F
10 AM
47°F
0%
4mph
WSW
Mostly Sunny
Humidity
89%
Feels like
46°F
Dew Point
44°F
11 AM
49°F
0%
4mph
W
Sunny
Humidity
85%
Feels like
48°F
Dew Point
45°F
12 PM
52°F
0%
4mph
W
Sunny
Humidity
81%
Feels like
52°F
Dew Point
46°F
1 PM
53°F
0%
4mph
WNW
Sunny
Humidity
79%
Feels like
53°F
Dew Point
47°F
2 PM
54°F
0%
5mph
WNW
Mostly Sunny
Humidity
78%
Feels like
54°F
Dew Point
47°F
3 PM
53°F
0%
5mph
NW
Mostly Sunny
Humidity
79%
Feels like
53°F
Dew Point
47°F
4 PM
52°F
0%
5mph
NW
Mostly Sunny
Humidity
82%
Feels like
52°F
Dew Point
46°F
4:50 PM
5 PM
49°F
0%
5mph
NW
Mostly Clear
Humidity
85%
Feels like
48°F
Dew Point
45°F
6 PM
47°F
0%
5mph
NW
Cloudy
Humidity
88%
Feels like
45°F
Dew Point
44°F
7 PM
46°F
0%
5mph
NNW
Cloudy
Humidity
89%
Feels like
44°F
Dew Point
43°F
8 PM
45°F
0%
5mph
NNE
Cloudy
Humidity
89%
Feels like
43°F
Dew Point
42°F
9 PM
44°F
0%
5mph
ENE
Cloudy
Humidity
90%
Feels like
41°F
Dew Point
41°F
10 PM
43°F
0%
5mph
E
Cloudy
Humidity
91%
Feels like
40°F
Dew Point
40°F
11 PM
41°F
0%
5mph
ENE
Cloudy
Humidity
93%
Feels like
38°F
Dew Point
39°F

Wind chill temperatures Monday A.M.

Cold Weather Chills the Nation Down to the Gulf

In the path of a weak low-pressure system that brings snow to the Midwest and Northeast, extreme cold weather and brutally cold wind chill values will bring a bitter cold to much of the Nation.

Snowfall forecast through Sunday A.M.

Snow Spreads Across the Midwest into the Mid-Atlantic

Weekend Weather Outlook

Weekend Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide