Glendora (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Glendora.
Climate overview of Glendora
Glendora, California, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 33°C (91°F) in August, while winters cool to 19°C (66°F) in December.
Rainfall is modest, totalling around 399 mm (16 in) annually. The city experiences a distinct dry season from April to November, with very warm summers and pleasant winters. December tends to be the wettest month. The sunniest month is July, with 12.3 hours of sunshine per day on average.
Glendora Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Glendora - and find the best time to visit.
Monthly Temperature in Glendora
Depending on the time of the year, temperatures range from very warm to pleasant in Glendora. Average maximum daytime temperatures range from a very warm 33°C (91°F) in August, the warmest time of the year, to a pleasant 19°C (66°F) during cooler months like December.
At night, you can expect temperatures ranging from 17°C (63°F) in August to around 7°C (45°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Glendora
Glendora maintains relatively dry conditions year-round, recording average annual precipitation of 399 mm (16 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives high rainfall, averaging 102 mm (4 in) of precipitation, recorded across 10 rainy days. In contrast, the driest month August brings less rainfall, with 0.4 mm (0.02 in) over 0 rainy days. For more details, please visit our Glendora 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 Glendora
Seasonal changes in sunshine hours are quite dramatic in Glendora. While July receives considerable daily sunshine with up to 12.3 hours, January marks the darkest time of the year, where sunshine is scarce 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 Glendora
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 and November
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewest rainy days: June, July, August and September
- Wettest months: January, February, March and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from April to November, with very warm summers and pleasant winters
Frequently asked questions about the climate in Glendora
What is the best time to visit Glendora?
January, February, March, April, May, October and November typically offer the most optimal weather in Glendora. In contrast, July, August and December tend to have less optimal conditions. Glendora has a distinct dry season from April to November, with very warm summers and pleasant winters.
What temperatures can I expect in Glendora?
Daytime highs range from 19°C (66°F) in December to 33°C (91°F) in August. Nighttime lows range from 7°C (45°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Glendora get?
Annual rainfall is around 399 mm (16 in). December is the wettest month with 102 mm (4 in), while August is the driest with 0.4 mm (0.02 in).
How sunny is Glendora?
Glendora 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, Glendora enjoys abundant sunshine.
Glendora 3-Day Forecast
Glendora on the map
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