Rowland Heights (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Rowland Heights.
Climate overview of Rowland Heights
Rowland Heights, California, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 34°C (93°F) in August, while winters cool to 20°C (68°F) in December.
With around 300 mm (12 in) of annual rainfall, Rowland Heights has a fairly dry climate. However, it has a distinct dry season from March to November, with very warm summers and pleasant winters. The wettest month is December, while August sees the least rain. Sunshine peaks in July, when the city sees around 12.3 hours of sunshine per day.
Rowland Heights Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rowland Heights - and find the best time to visit.
Monthly Temperature in Rowland Heights
Depending on the time of the year, temperatures range from very warm to pleasant in Rowland Heights. Average daytime temperatures reach a very warm 34°C (93°F) in August. In December, the coolest month of the year, temperatures drop to a pleasant 20°C (68°F).
At night, temperatures range from around 17°C (63°F) in August to 8°C (46°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rowland Heights
Rowland Heights has a relatively dry climate with low precipitation, averaging 300 mm (12 in) of rainfall annually. Rowland Heights can be quite wet during December, receiving approximately 79 mm (3.1 in) of precipitation over 9 rainy days.
In contrast, during the driest month (August), you will experience much drier conditions, with 0.2 mm (0.01 in) of precipitation spread across 0 rainy days. For more details, please visit our Rowland Heights Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Rowland Heights
Rowland Heights can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 12.3 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 6.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Rowland Heights
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, May, October, November and December
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewer rainy days: May, June, July, August and September
- Seasonal pattern: A distinct dry season from March to November, with very warm summers and pleasant winters
Frequently asked questions about the climate in Rowland Heights
What is the best time to visit Rowland Heights?
January, February, March, April, May, October, November and December typically offer the most optimal weather in Rowland Heights. In contrast, August tends to have less optimal conditions. Rowland Heights has a distinct dry season from March to November, with very warm summers and pleasant winters.
What temperatures can I expect in Rowland Heights?
Daytime highs range from 20°C (68°F) in December to 34°C (93°F) in August. Nighttime lows range from 8°C (46°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Rowland Heights get?
Annual rainfall is around 300 mm (12 in). December is the wettest month with 79 mm (3.1 in), while August is the driest with 0.2 mm (0.01 in).
How sunny is Rowland Heights?
Rowland Heights receives around 3,279 hours of sunshine per year. July is the sunniest month with 369 hours, while January is the cloudiest with just 198 hours. Overall, Rowland Heights enjoys abundant sunshine.
Rowland Heights 3-Day Forecast
Rowland Heights (CA) 3-Day Forecast
Rowland Heights on the map
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