Pomona Climate by Month
Pomona, California, United States
Hot summers and mild winters, with most rain from December to March.
The climate in Pomona is one of hot summers and mild winters, with most rain from December to March. Expect highs of 91°F (33°C) in August and 67°F (20°C) in December, with the coldest nights (December) near 42°F (6°C). Of the 14 in (364 mm) of rain in a typical year, 76% falls from December to March. May to September are almost completely dry.
- Warmest month
- 91°F(33°C)
- Average high, August
- Coldest nights
- 42°F(6°C)
- Average low, December
- Rain per year
- 14 in(364 mm)
- Wettest: February
- Humidity
- 49%
- Sunniest: June
Best and worst months in Pomona
Best for weatherThe most comfortable weather comes in April, May and November, with highs around 76°F (24°C) and about 0.9 in (23 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 April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Pomona weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 68°F(20°C) | 43°F(6°C) | 3.0 in(76 mm) | 47% | 2.9 |
| FebFebruary | 68°F(20°C) | 44°F(7°C) | 3.2 in(82 mm) | 52% | 3.4 |
| MarMarch | 71°F(22°C) | 47°F(8°C) | 2.2 in(55 mm) | 53% | 4.9 |
| AprAprilBest | 75°F(24°C) | 49°F(10°C) | 1.2 in(31 mm) | 52% | 5.9 |
| MayMayBest | 78°F(26°C) | 54°F(12°C) | 0.2 in(5 mm) | 55% | 6.4 |
| JunJune | 83°F(28°C) | 58°F(14°C) | 0.0 in(1 mm) | 51% | 7.0 |
| JulJuly | 89°F(32°C) | 62°F(17°C) | 0.0 in(1 mm) | 50% | 6.9 |
| AugAugust | 91°F(33°C) | 63°F(17°C) | 0.0 in(1 mm) | 47% | 6.7 |
| SepSeptember | 89°F(32°C) | 61°F(16°C) | 0.2 in(4 mm) | 48% | 5.5 |
| OctOctober | 82°F(28°C) | 55°F(13°C) | 0.5 in(13 mm) | 43% | 4.2 |
| NovNovemberBest | 74°F(23°C) | 47°F(8°C) | 1.3 in(32 mm) | 44% | 3.3 |
| DecDecember | 67°F(20°C) | 42°F(6°C) | 2.5 in(63 mm) | 48% | 2.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Pomona →- 🇺🇸TemeculaCalifornia, United States · Pop. 110k98%matchSame summer highsSame humidityPomona vs Temecula →
- 🇺🇸Santa ClaritaCalifornia, United States · Pop. 182k97%matchSimilar rainfallSame sunshinePomona vs Santa Clarita →
- 🇲🇽TecateBaja California, Mexico · Pop. 65k95%matchSame winter lowsSame summer highsPomona vs Tecate →
- 🇺🇸EscondidoCalifornia, United States · Pop. 151k94%matchSame winter lowsSame sunshinePomona vs Escondido →
- 🇺🇸Lemon GroveCalifornia, United States · Pop. 27k87%matchSame sunshineSimilar rainfallPomona vs Lemon Grove →