Glendora Climate by Month
Glendora, California, United States
Hot summers and mild winters, with most rain from December to March.
Glendora has hot summers and mild winters, with most rain from December to March. Afternoon highs range from 67°F (20°C) in December to 91°F (33°C) in August, and December nights average 43°F (6°C). It gets 14 in (365 mm) of rain a year, 76% of it from December to March. May to September are almost completely dry.
- Warmest month
- 91°F(33°C)
- Average high, August
- Coldest nights
- 43°F(6°C)
- Average low, December
- Rain per year
- 14 in(365 mm)
- Wettest: February
- Humidity
- 48%
- Sunniest: June
Best and worst months in Glendora
Best for weatherThe most comfortable weather comes in April, May and November, with highs around 75°F (24°C) and about 0.9 in (22 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; August is the hottest, with highs of 91°F (33°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Glendora weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 68°F(20°C) | 44°F(7°C) | 3.0 in(76 mm) | 46% | 2.8 |
| FebFebruary | 68°F(20°C) | 44°F(7°C) | 3.3 in(83 mm) | 52% | 3.4 |
| MarMarch | 70°F(21°C) | 46°F(8°C) | 2.2 in(56 mm) | 54% | 4.9 |
| AprAprilBest | 74°F(24°C) | 49°F(9°C) | 1.2 in(30 mm) | 48% | 5.9 |
| MayMayBest | 77°F(25°C) | 54°F(12°C) | 0.2 in(6 mm) | 51% | 6.5 |
| JunJune | 82°F(28°C) | 58°F(14°C) | 0.1 in(2 mm) | 52% | 7.0 |
| JulJuly | 89°F(32°C) | 62°F(17°C) | 0.0 in(1 mm) | 50% | 7.0 |
| AugAugust | 91°F(33°C) | 63°F(17°C) | 0.0 in(1 mm) | 44% | 6.7 |
| SepSeptember | 88°F(31°C) | 61°F(16°C) | 0.2 in(4 mm) | 45% | 5.6 |
| OctOctober | 81°F(27°C) | 55°F(13°C) | 0.6 in(14 mm) | 43% | 4.2 |
| NovNovemberBest | 74°F(23°C) | 48°F(9°C) | 1.2 in(31 mm) | 38% | 3.3 |
| DecDecember | 67°F(20°C) | 43°F(6°C) | 2.4 in(61 mm) | 47% | 2.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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