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Hayward (CA)
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Hayward (CA)
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United States weather

Weather in Hayward, California for December 2025

Your guide to Hayward weather in December - trends and predictions

    Temperatures

  • Until now, December 2025 in Hayward has been nearly identical to the historical average, with a temperature of 15.4 °F (showing only a slight deviation of 0 °F).

  • The forecast for the upcoming days in Hayward predicts a temperature of 16.3 °F, which is slightly above the historical average.

  • In general, the average temperature in Hayward at the beginning of December is 15.4 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 15.3 °F by the end of December.

    • Rain 🌧️

  • 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.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
19
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
14°/7°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Hayward Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Cloudy
17°
2
Patchy rain possible
16°
3
Mist
15°
4
Sunny
16°
5
Mist
16°
6
Moderate rain
15°
7
Mist
13°
8
Mist
14°
9
Overcast
13°
10
Overcast
16°
11
Overcast
17°
12
Overcast
16°
13
Overcast
16°
14
Overcast
13°
15
Sunny
16°
16
Fog
15°
17
Fog
15°
18
Sunny
17°
19
Patchy rain possible
17°
20
Cloudy
17°
21
Moderate rain
15°
22
Moderate rain
15°
23
Cloudy
16°
24
Moderate rain
15°
25
Partly cloudy
19°
26
Sunny
18°
27
Patchy rain possible
16°
28
Mist
17°
29
Light rain shower
14°
30
Light rain shower
12°
31
Light rain shower
11°

Temperatures trend during December in Hayward

See the weather trend as well as the moving average line

December weather in Hayward day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Cloudy
Cloudy
 17° /6° 0 mm 4
Dec. 2 Patchy rain possible
Patchy rain possible
 16° /7° 0 mm 4
Dec. 3 Mist
Mist
 15° /6° 0 mm 4
Dec. 4 Sunny
Sunny
 16° /7° 0 mm 5
Dec. 5 Mist
Mist
 16° /7° 0 mm 4
Dec. 6 Moderate rain
Moderate rain
 15° /7° 1.6 mm 4
Dec. 7 Mist
Mist
 13° /6° 0.3 mm 3
Dec. 8 Mist
Mist
 14° /5° 0 mm 3
Dec. 9 Overcast
Overcast
 13° /4° 0 mm 3
Dec. 10 Overcast
Overcast
 16° /4° 0 mm 4
Dec. 11 Overcast
Overcast
 17° /6° 0 mm 5
Dec. 12 Overcast
Overcast
 16° /8° 12.7 mm 4
Dec. 13 Overcast
Overcast
 16° /8° 0 mm 4
Dec. 14 Overcast
Overcast
 13° /6° 29.9 mm 3
Dec. 15 Sunny
Sunny
 16° /3° 0 mm 0.4
Dec. 16 Fog
Fog
 15° /9° 0 mm 0.4
Dec. 17 Fog
Fog
 15° /9° 0 mm 0.4
Dec. 18 Sunny
Sunny
 17° /8° 0 mm 0.5
Dec. 19 Patchy rain possible
Patchy rain possible
 17° /10° 1.9 mm 0
Dec. 20 Cloudy
Cloudy
 17° /12° 0 mm 3
Dec. 21 Moderate rain
Moderate rain
 15° /13° 5.2 mm 3
Dec. 22 Moderate rain
Moderate rain
 15° /14° 6.4 mm 3
Dec. 23 Cloudy
Cloudy
 16° /13° 0 mm 3
Dec. 24 Moderate rain
Moderate rain
 15° /13° 9.7 mm 3
Dec. 25 Partly cloudy
Partly cloudy
 19° /12° 0 mm 4
Dec. 26 Sunny
Sunny
 18° /11° 0 mm 4
Dec. 27 Patchy rain possible
Patchy rain possible
 16° /12° 0.6 mm 3
Dec. 28 Mist
Mist
 17° /11° 0 mm 3
Dec. 29 Light rain shower
Light rain shower
 14° /9° 15.8 mm 4
Dec. 30 Light rain shower
Light rain shower
 12° /6° 2.5 mm 3
Dec. 31 Light rain shower
Light rain shower
 11° /4° 0.4 mm 3
Next
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.
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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 💧
Typically, Hayward has 12 rainy days in December with a total of 180.4 mm of rainfall.

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Location coordinates 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.

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