Alum Rock, CA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Alum Rock now
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Alum Rock weather by the hour
Alum Rock weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Alum Rock.
This week in Alum Rock
Sunrise, sunset and moon in Alum Rock
What is the weather usually like in Alum Rock?
Köppen climate classification, calculated from the 1991–2020 normals
- Augustwarmest month · 82°F average high
- Decembercoldest month · 42°F average low
- 16.1 inprecipitation per year · 410 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Alum Rock: May to July and September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station SAN JOSE, CA US (USC00047821), adjusted for the elevation of Alum Rock.
Alum Rock weather month by month
Sunrise and sunset in Alum Rock through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:18 AM | 5:14 PM | 9 h 56 min |
| February | 6:54 AM | 5:48 PM | 10 h 53 min |
| March | 7:16 AM | 7:15 PM | 11 h 59 min |
| April | 6:30 AM | 7:43 PM | 13 h 13 min |
| May | 5:56 AM | 8:10 PM | 14 h 14 min |
| June | 5:44 AM | 8:31 PM | 14 h 46 min |
| July | 5:57 AM | 8:29 PM | 14 h 31 min |
| August | 6:22 AM | 8:00 PM | 13 h 38 min |
| September | 6:48 AM | 7:16 PM | 12 h 28 min |
| October | 7:14 AM | 6:31 PM | 11 h 17 min |
| November | 6:45 AM | 4:58 PM | 10 h 12 min |
| December | 7:12 AM | 4:52 PM | 9 h 39 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in Alum Rock?
Alum Rock has a warm-summer mediterranean climate. The warmest month is August, with an average high of 82°F (28°C), and the coldest is December, with average lows of 42°F (6°C).
It gets about 16.1 inches (410 mm) of precipitation a year. The wettest month is February and the driest is July.
The best time to visit Alum Rock is May to July and September. At 151 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Alum Rock
Weather in towns near Alum Rock
Questions about the weather in Alum Rock
What is the hottest month in Alum Rock?
August, with an average high of 82°F (28°C).
What is the coldest month in Alum Rock?
December, with an average low of 42°F (6°C).
How much does it rain in Alum Rock?
About 16.1 inches (410 mm) a year; the wettest month is February.
Does it snow in Alum Rock?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Alum Rock?
May to July and September, when temperatures are most pleasant and rainy days are fewer.
What climate does Alum Rock have?
Warm-summer mediterranean (Köppen Csb).
What is the weather like in Alum Rock in November?
Highs average 65°F and lows 47°F, with about 1.4 inches of precipitation.
What time is sunrise in Alum Rock?
Around 6:45 AM in mid-November, and sunset around 4:58 PM. Today’s exact times are shown above.
Where does this Alum Rock weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Alum Rock.
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