California has a warm temperate climate with warm summers and mild winters.
California has an average annual temperature of 62.8°F across all 214 cities, with approximately 429 mm of annual precipitation and average humidity of 60%. Temperatures peak in August and drop to their lowest in January, while rainfall is highest during winter months.
The warmest city is Palm Desert with average July highs of 104.0°F, while Apple Valley is the coldest with average January lows of 34.0°F. Humidity remains moderate throughout the year, especially in spring, creating warm and dry conditions. These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
| Month | 🌤️ | Avg High | Avg Temp | Avg Low | Record High | Record Low | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|---|---|
| January | ⛅ | 60.8°F | 52.2°F | 43.3°F | 86.7°F | 10.0°F | 68% | 83 | 2.2 | 2.90 |
| February | ⛅ | 61.9°F | 53.1°F | 44.1°F | 90.3°F | 3.2°F | 70% | 86 | 2.2 | 3.80 |
| March | 🌤️ | 64.8°F | 55.2°F | 45.7°F | 94.5°F | 16.3°F | 70% | 68 | 2.2 | 5.10 |
| April | 🌤️ | 69.4°F | 58.6°F | 48.0°F | 101.7°F | 18.1°F | 66% | 25 | 2.3 | 6.40 |
| May | ☀️ | 74.8°F | 63.5°F | 52.0°F | 111.2°F | 28.4°F | 63% | 12 | 2.3 | 7.10 |
| June | ☀️ | 82.0°F | 69.3°F | 56.7°F | 116.8°F | 33.1°F | 56% | 3 | 2.3 | 7.60 |
| July | 😎 | 87.3°F | 74.3°F | 61.5°F | 121.1°F | 42.6°F | 51% | 3 | 2.2 | 7.50 |
| August | 😎 | 88.2°F | 75.4°F | 62.8°F | 118.0°F | 44.4°F | 50% | 4 | 2.1 | 6.90 |
| September | 😎 | 85.3°F | 73.0°F | 61.0°F | 119.5°F | 35.6°F | 52% | 7 | 1.9 | 5.80 |
| October | ☀️ | 77.9°F | 66.7°F | 55.6°F | 110.1°F | 28.2°F | 54% | 20 | 1.9 | 4.50 |
| November | 🌤️ | 68.0°F | 58.3°F | 48.6°F | 94.6°F | 15.3°F | 59% | 43 | 2.1 | 3.30 |
| December | 🌤️ | 60.8°F | 52.2°F | 43.5°F | 84.4°F | 10.2°F | 65% | 75 | 2.2 | 2.60 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 214 cities in California
🧥 Light layers are sufficient — this Mild Winter stays cool without prolonged hard freezes.
🌤️ Early mornings and evenings are most comfortable during this Hot Summer season.
☔ Moderate Rainfall expected — carry rain gear and plan outdoor activities around these months.
Region-wide monthly averages across 214 cities · 1981–2025 · °F
Temperatures rise steadily from spring, peak in August, and gradually decline through autumn into winter.
These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
Region-wide monthly rainfall · 1981–2025 · mm/month
💧 Humidity peaks at 70% in March · annual avg 60%
Monthly averages · 1981–2025
Across 45 years, California's temperature has remained relatively stable over the past decade. 2014 was the warmest year overall and 1982 the coolest.
The warmest year on record was 2014 (avg: 65.5°F), while the coldest year was 1982 (avg: 60.4°F).
Averaged across all 214 cities in California · Last 30 years · °F
Averaged across all 214 cities in California · Last 30 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 214 cities in California for each year.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|---|---|
2025 | 74.1°F | 63.7°F | 53.2°F | 113.9°F | 24.1°F | 481 | 64% | 2.1 m/s |
2024 | 74.1°F | 63.9°F | 53.4°F | 121.1°F | 21.7°F | 498 | 63% | 2.1 m/s |
2023 | 71.4°F | 61.7°F | 52.0°F | 116.1°F | 20.7°F | 660 | 66% | 2.2 m/s |
2022 | 75.0°F | 64.0°F | 52.9°F | 119.5°F | 17.4°F | 279 | 59% | 2.1 m/s |
2021 | 74.5°F | 63.5°F | 52.5°F | 118.9°F | 17.2°F | 400 | 58% | 2.2 m/s |
2020 | 75.4°F | 64.4°F | 53.4°F | 115.2°F | 22.1°F | 266 | 59% | 2.1 m/s |
2019 | 72.1°F | 62.2°F | 52.2°F | 112.6°F | 12.9°F | 688 | 64% | 2.2 m/s |
2018 | 74.7°F | 63.9°F | 53.1°F | 115.3°F | 21.7°F | 366 | 59% | 2.1 m/s |
2017 | 74.3°F | 64.0°F | 53.6°F | 116.1°F | 13.8°F | 516 | 61% | 2.1 m/s |
2016 | 74.5°F | 63.9°F | 53.2°F | 116.8°F | 16.3°F | 469 | 61% | 2.1 m/s |
Showing 1 to 10 of 45 years
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.
