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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 2026

Your guide to Hayward weather in December - trends and predictions

    Temperatures

  • In general, the average temperature in Hayward at the beginning of December is 15.2 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 12.9 °C by the end of December.

    • Rain 🌧️

  • Hayward experiences moderate rainfall in December, with an average of 8 rainy days and a total precipitation of 257.9 mm.

    • More

  • Is December a good time to visit Hayward? check out the best time to travel to Hayward page.

  • ✨ Is December a good time to visit Hayward? – Ask the AI Weatherman

Average dry days
23
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
14°/7°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
79 %
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
15°
3
Mist
15°
4
Sunny
16°
5
Mist
16°
6
Patchy rain possible
15°
7
Mist
13°
8
Mist
13°
9
Overcast
13°
10
Overcast
16°
11
Overcast
17°
12
Moderate rain
15°
13
Overcast
15°
14
Heavy rain
13°
15
Sunny
12°
16
Light rain
14°
17
Patchy rain possible
15°
18
Light rain
14°
19
Moderate or heavy rain with thunder
14°
20
Moderate rain
14°
21
Heavy rain
13°
22
Heavy rain
15°
23
Partly cloudy
15°
24
Heavy rain
14°
25
Moderate rain
13°
26
Light rain
13°
27
Moderate or heavy rain with thunder
13°
28
Patchy rain possible
13°
29
Moderate rain
14°
30
Light rain shower
13°
31
Moderate rain
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 2.4
Dec. 2 Patchy rain possible
Patchy rain possible
 15° /7° 0 mm 2.4
Dec. 3 Mist
Mist
 15° /6° 0 mm 2.3
Dec. 4 Sunny
Sunny
 16° /8° 0 mm 2.3
Dec. 5 Mist
Mist
 16° /7° 0 mm 2.3
Dec. 6 Patchy rain possible
Patchy rain possible
 15° /7° 1.6 mm 2.3
Dec. 7 Mist
Mist
 13° /7° 0.3 mm 2.3
Dec. 8 Mist
Mist
 13° /5° 0 mm 2.2
Dec. 9 Overcast
Overcast
 13° /5° 0 mm 2.2
Dec. 10 Overcast
Overcast
 16° /4° 0 mm 2.2
Dec. 11 Overcast
Overcast
 17° /7° 0 mm 2.2
Dec. 12 Moderate rain
Moderate rain
 15° /8° 12.7 mm 2.2
Dec. 13 Overcast
Overcast
 15° /8° 0 mm 2.2
Dec. 14 Heavy rain
Heavy rain
 13° /6° 29.9 mm 2.2
Dec. 15 Sunny
Sunny
 12° /6° 0 mm 2.2
Dec. 16 Light rain
Light rain
 14° /9° 2.6 mm 2.2
Dec. 17 Patchy rain possible
Patchy rain possible
 15° /10° 1.1 mm 2.2
Dec. 18 Light rain
Light rain
 14° /7° 4.7 mm 2.2
Dec. 19 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 14° /10° 6.1 mm 2.2
Dec. 20 Moderate rain
Moderate rain
 14° /9° 12.1 mm 2
Dec. 21 Heavy rain
Heavy rain
 13° /10° 64.5 mm 2
Dec. 22 Heavy rain
Heavy rain
 15° /10° 26.9 mm 2.2
Dec. 23 Partly cloudy
Partly cloudy
 15° /10° 0 mm 2.2
Dec. 24 Heavy rain
Heavy rain
 14° /9° 31.3 mm 2
Dec. 25 Moderate rain
Moderate rain
 13° /8° 16.2 mm 2
Dec. 26 Light rain
Light rain
 13° /9° 4.2 mm 2
Dec. 27 Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 13° /8° 19.2 mm 2
Dec. 28 Patchy rain possible
Patchy rain possible
 13° /8° 0.1 mm 2.2
Dec. 29 Moderate rain
Moderate rain
 14° /6° 10.6 mm 2.2
Dec. 30 Light rain shower
Light rain shower
 13° /5° 1.7 mm 2
Dec. 31 Moderate rain
Moderate rain
 11° /6° 12 mm 2
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 257.9 mm is expected in Hayward during December, occurring over more than 8 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 11 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 8 rainy days in December with a total of 257.9 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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