Weather in Hayward, California for January 2026
Coastal Flood Advisory - See hour by hour.
Until now, January 2026 in Hayward has been nearly identical to the historical average, with a temperature of 14.1 °F (showing only a slight deviation of 0.3 °F).
The forecast for the next days in Hayward predicts a temperature of 17.8 °F, which is cooler than the historical average.
In general, the average temperature in Hayward at the beginning of January is 13.1 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 16.3 °F by the end of January.
The climate of Hayward in January is notably wet, with an average of 11 rainy days, and a total of 77.7 mm of precipitation.
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Hayward Weather January
Temperatures trend during January in Hayward
January weather in Hayward day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Jan. 1 |  Partly cloudy | 14° /7° | 6.8 mm | 3 | |
| Jan. 2 | Partly cloudy | 15° /8° | 0.7 mm | 3 | |
| Jan. 3 |  Light rain shower | 13° /9° | 16.5 mm | 2 | |
| Jan. 4 | Partly cloudy | 12° /6° | 28.8 mm | 2 | |
| Jan. 5 |  Cloudy | 13° /6° | 0 mm | 2 | |
| Jan. 6 | Light rain shower | 13° /6° | 3.1 mm | 2 | |
| Jan. 7 |  Sunny | 12° /5° | 0 mm | 3 | |
| Jan. 8 | Cloudy | 13° /5° | 0 mm | 2 | |
| Jan. 9 | Partly cloudy | 14° /3° | 0.1 mm | 3 | |
| Jan. 10 | Light rain shower | 12° /3° | 1.1 mm | 3 | |
| Jan. 11 | Cloudy | 13° /3° | 0 mm | 2 | |
| Jan. 12 | Cloudy | 13° /4° | 0 mm | 3 | |
| Jan. 13 |  Moderate rain | 13° /3° | 3.2 mm | 3 | |
| Jan. 14 | Sunny | 16° /5° | 0.3 mm | 3 | |
| Jan. 15 | Partly cloudy | 16° /6° | 0 mm | 3 | |
| Jan. 16 | Patchy rain possible | 16° /6° | 1.2 mm | 3 | |
| Jan. 17 |  Mist | 14° /6° | 0.2 mm | 2 | |
| Jan. 18 | Partly cloudy | 12° /6° | 0 mm | 4 | |
| Jan. 19 |  Light rain | 14° /6° | 2.6 mm | 2 | |
| Jan. 20 | Light rain shower | 14° /5° | 2.9 mm | 2 | |
| Jan. 21 | Patchy rain possible | 14° /7° | 0.1 mm | 3 | |
| Jan. 22 |  Moderate or heavy rain with thunder | 14° /7° | 10.1 mm | 3 | |
| Jan. 23 | Patchy rain possible | 14° /7° | 0 mm | 3 | |
| Jan. 24 | Light rain | 14° /7° | 1.3 mm | 3 | |
| Jan. 25 | Mist | 14° /4° | 0.1 mm | 3 | |
| Jan. 26 |  Overcast | 14° /5° | 0 mm | 2 | |
| Jan. 27 | Cloudy | 15° /5° | 0 mm | 3 | |
| Jan. 28 | Cloudy | 15° /7° | 0 mm | 3 | |
| Jan. 29 | Sunny | 13° /7° | 0 mm | 4 | |
| Jan. 30 | Sunny | 22° /9° | 0 mm | 0.6 | |
| Jan. 31 | Overcast | 21° /6° | 0 mm | 0.6 | |
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Hayward in January - FAQ
What are the expected maximum and minimum temperatures in Hayward during January?
How much rainfall should be expected in Hayward during January?
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January rainfall patterns in Hayward
UV exposure in Hayward during January
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Where is Hayward?Get accurate weather forecasts for Hayward, located at latitude 37.669 and longitude -122.081. Stay updated with localized weather information tailored for Hayward.