Hayward
December
Weather in Hayward for December 2025
Your guide to Hayward weather in December - trends and predictions
In general, the average temperature in Hayward at the beginning of December is 15.9 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 13.1 °F by the end of December.
The climate of Hayward in December is notably wet, with an average of 12 rainy days, and a total of 180.4 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
12
Rainy days
0
Snow days
14°/7°
Temperatures
10 km/h
Avg max wind
76 %
Avg humidity
Hayward Weather December
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  18° | 2  16° | 3  16° | 4 16° | 5 16° | 6  15° | |
| 7  14° | 8 15° | 9  14° | 10 15° | 11 16° | 12 14° | 13 14° |
| 14 13° | 15  11° | 16  14° | 17 15° | 18 14° | 19  15° | 20 14° |
| 21 13° | 22 16° | 23 16° | 24 14° | 25 13° | 26 14° | 27 14° |
| 28 14° | 29 14° | 30 12° | 31 11° |
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Temperatures trend during December in Hayward
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 | Cloudy | 18° /7° | 0 mm | 5 | |
| Dec. 2 | Patchy rain possible | 16° /8° | 0.1 mm | 5 | |
| Dec. 3 | Fog | 16° /7° | 0 mm | 4 | |
| Dec. 4 | Fog | 16° /9° | 0 mm | 5 | |
| Dec. 5 | Mist | 16° /7° | 0 mm | 4 | |
| Dec. 6 | Moderate rain | 15° /7° | 2.4 mm | 4 | |
| Dec. 7 | Light drizzle | 14° /6° | 0.5 mm | 3 | |
| Dec. 8 | Mist | 15° /4° | 0 mm | 4 | |
| Dec. 9 | Overcast | 14° /4° | 0 mm | 4 | |
| Dec. 10 | Overcast | 15° /2° | 0 mm | 4 | |
| Dec. 11 | Overcast | 16° /5° | 0 mm | 5 | |
| Dec. 12 | Overcast | 14° /8° | 19.1 mm | 4 | |
| Dec. 13 | Overcast | 14° /7° | 0 mm | 4 | |
| Dec. 14 | Overcast | 13° /7° | 44.8 mm | 4 | |
| Dec. 15 | Sunny | 11° /5° | 0 mm | 4 | |
| Dec. 16 | Partly cloudy | 14° /7° | 3.9 mm | 4 | |
| Dec. 17 | Partly cloudy | 15° /9° | 0.1 mm | 4 | |
| Dec. 18 | Light rain shower | 14° /7° | 7 mm | 3 | |
| Dec. 19 | Moderate or heavy rain with thunder | 15° /9° | 9.1 mm | 4 | |
| Dec. 20 | Light rain shower | 14° /8° | 12 mm | 4 | |
| Dec. 21 | Partly cloudy | 13° /9° | 1.7 mm | 4 | |
| Dec. 22 | Sunny | 16° /9° | 0 mm | 5 | |
| Dec. 23 | Partly cloudy | 16° /10° | 0 mm | 5 | |
| Dec. 24 | Overcast | 14° /8° | 33.1 mm | 3 | |
| Dec. 25 | Cloudy | 13° /6° | 0 mm | 4 | |
| Dec. 26 | Cloudy | 14° /7° | 0 mm | 4 | |
| Dec. 27 | Moderate or heavy rain with thunder | 14° /9° | 27.7 mm | 4 | |
| Dec. 28 | Patchy rain possible | 14° /11° | 0.2 mm | 4 | |
| Dec. 29 | Light rain shower | 14° /9° | 15.8 mm | 4 | |
| Dec. 30 | Light rain shower | 12° /6° | 2.5 mm | 3 | |
| Dec. 31 | Light rain shower | 11° /4° | 0.4 mm | 3 | |
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Important Notice
Our weather forecast for Hayward in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Hayward forecast closer to your planned date for the most up-to-date weather information.
Hayward in December - FAQ
What are the expected maximum and minimum temperatures in Hayward during December?
During December, expect a variety of temperatures with highs around 14° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Hayward during December?
Significant rainfall exceeding 180.4 mm is expected in Hayward during December, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Hayward during December?
The average wind speed in Hayward during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Hayward
Explore the daily rainfall trends and prepare for Haywards December weather 💧
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