
Pacific Storm System Across the West; Fire Weather Concerns in the Southeast
A Pacific storm system will bring strong winds and low elevation rain to much of the West Coast, and heavy high elevation mountain snow to the Sierra-Nevada through Wednesday. Fire weather concerns will continue into Tuesday across the Mid-South and Southeast as gusty winds and dry conditions persist. Read More >
Current conditions at
Hayward, Hayward Air Terminal (KHWD)
Lat: 37.66083°NLon: 122.11833°WElev: 46.0ft.light rain,mist
54°F
12°C
| Humidity | 93% |
| Wind Speed | SE 5 MPH |
| Barometer | 29.89 in (1012.19 mb) |
| Dewpoint | 52°F (11°C) |
| Visibility | 6.00 mi |
| Last update | 21 Apr 02:20 AM PDT |
Extended Forecast for
Union City CA
Overnight

Low: 52 °F
Rain
Tuesday

High: 57 °F
Showers
Tuesday Night

Low: 49 °F
Chance Rain
Wednesday

High: 60 °F
Chance Rain
Wednesday Night

Low: 46 °F
Mostly Clear
Thursday

High: 65 °F
Sunny
Thursday Night

Low: 48 °F
Partly Cloudy
Friday

High: 66 °F
Mostly Sunny
Friday Night

Low: 50 °F
Partly Cloudy
Detailed Forecast
Overnight
Rain, mainly before 5am, then showers after 5am. Low around 52. South wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday
Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then rain likely and possibly a thunderstorm after 5pm. High near 57. South wind 6 to 13 mph becoming west southwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A chance of rain before midnight, then a chance of rain after 2am. Mostly cloudy, with a low around 49. West southwest wind 6 to 10 mph becoming south after midnight. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A 40 percent chance of rain, mainly before 11am. Mostly sunny, with a high near 60. South wind 5 to 7 mph becoming west in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 46. West northwest wind 5 to 9 mph becoming calm after midnight.
Thursday
Sunny, with a high near 65.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Mostly sunny, with a high near 66.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Partly sunny, with a high near 64.
Saturday Night
Mostly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 50.
Monday
Mostly sunny, with a high near 66.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Union City CA
37.61°N 122°W (Elev. 594 ft)
37.61°N 122°W (Elev. 594 ft)
12:31 am PDT Apr 21, 2026
2am PDT Apr 21, 2026-6pm PDT Apr 27, 2026


