East Palo Alto Climate by Month
East Palo Alto, California, United States
Warm summers and cool winters, with most rain from December to March.
Warm summers and cool winters, with most rain from December to March: that's East Palo Alto's climate in short. September is the warmest month, with highs around 78°F (26°C); January is the coolest at 59°F (15°C), and nights dip to 41°F (5°C). Of the 16 in (413 mm) of rain in a typical year, 71% falls from December to March. June to September are almost completely dry.
- Warmest month
- 78°F(26°C)
- Average high, September
- Coldest nights
- 41°F(5°C)
- Average low, December
- Rain per year
- 16 in(413 mm)
- Wettest: January
- Humidity
- 69%
- Sunniest: June
Best and worst months in East Palo Alto
Best for weatherJune, July and October are the best time for weather in East Palo Alto: highs near 76°F (24°C) and almost no rain.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 59°F (15°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 June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
East Palo Alto weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 59°F(15°C) | 42°F(5°C) | 3.2 in(82 mm) | 80% | 1.9 |
| FebFebruary | 62°F(17°C) | 44°F(7°C) | 2.9 in(74 mm) | 72% | 2.7 |
| MarMarch | 66°F(19°C) | 46°F(8°C) | 2.4 in(61 mm) | 72% | 4.3 |
| AprApril | 69°F(21°C) | 47°F(9°C) | 1.3 in(32 mm) | 66% | 5.5 |
| MayMay | 72°F(22°C) | 51°F(11°C) | 0.4 in(10 mm) | 64% | 6.4 |
| JunJuneBest | 76°F(25°C) | 54°F(12°C) | 0.1 in(3 mm) | 61% | 7.4 |
| JulJulyBest | 77°F(25°C) | 56°F(13°C) | 0.0 in(1 mm) | 67% | 7.2 |
| AugAugust | 78°F(26°C) | 57°F(14°C) | 0.0 in(1 mm) | 65% | 6.5 |
| SepSeptember | 78°F(26°C) | 55°F(13°C) | 0.1 in(2 mm) | 63% | 5.4 |
| OctOctoberBest | 74°F(23°C) | 50°F(10°C) | 0.9 in(24 mm) | 63% | 3.9 |
| NovNovember | 66°F(19°C) | 45°F(7°C) | 1.9 in(47 mm) | 74% | 2.6 |
| DecDecember | 59°F(15°C) | 41°F(5°C) | 3.0 in(76 mm) | 81% | 1.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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