San Dimas, CA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in San Dimas now
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San Dimas weather by the hour
San Dimas weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of San Dimas.
This week in San Dimas
Sunrise, sunset and moon in San Dimas
What is the weather usually like in San Dimas?
Köppen climate classification, calculated from the 1991–2020 normals
- Augustwarmest month · 92°F average high
- Decembercoldest month · 42°F average low
- 14.5 inprecipitation per year · 368 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit San Dimas: April–May and October–November, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station POMONA/FAIRPLEX, CA US (USC00047050), adjusted for the elevation of San Dimas.
San Dimas weather month by month
Sunrise and sunset in San Dimas through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 6:55 AM | 5:06 PM | 10 h 11 min |
| February | 6:34 AM | 5:36 PM | 11 h 2 min |
| March | 6:59 AM | 7:00 PM | 12 h 0 min |
| April | 6:18 AM | 7:24 PM | 13 h 5 min |
| May | 5:47 AM | 7:47 PM | 13 h 59 min |
| June | 5:37 AM | 8:05 PM | 14 h 27 min |
| July | 5:49 AM | 8:04 PM | 14 h 15 min |
| August | 6:11 AM | 7:39 PM | 13 h 27 min |
| September | 6:33 AM | 6:59 PM | 12 h 25 min |
| October | 6:55 AM | 6:18 PM | 11 h 22 min |
| November | 6:22 AM | 4:48 PM | 10 h 25 min |
| December | 6:48 AM | 4:44 PM | 9 h 56 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in San Dimas?
San Dimas has a hot semi-arid climate. The warmest month is August, with an average high of 92°F (34°C), and the coldest is December, with average lows of 42°F (5°C).
It gets about 14.5 inches (368 mm) of precipitation a year. The wettest month is February and the driest is July.
The best time to visit San Dimas is April–May and October–November. At 955 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 San Dimas
Weather in towns near San Dimas
Questions about the weather in San Dimas
What is the hottest month in San Dimas?
August, with an average high of 92°F (34°C).
What is the coldest month in San Dimas?
December, with an average low of 42°F (5°C).
How much does it rain in San Dimas?
About 14.5 inches (368 mm) a year; the wettest month is February.
Does it snow in San Dimas?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit San Dimas?
April–May and October–November, when temperatures are most pleasant and rainy days are fewer.
What climate does San Dimas have?
Hot semi-arid (Köppen BSh).
What is the weather like in San Dimas in November?
Highs average 74°F and lows 47°F, with about 0.7 inches of precipitation.
What time is sunrise in San Dimas?
Around 6:22 AM in mid-November, and sunset around 4:48 PM. Today’s exact times are shown above.
Where does this San Dimas weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of San Dimas.
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