California has a warm subtropical climate with warm summers and mild winters.
California has an average annual temperature of 64.8°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 Delano with average July highs of 113.0°F, while Clovis is the coldest with average January lows of 22.8°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 | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | ⛅ | 71.6°F | 34.3°F | 52.9°F | 68% | 83 | 2.2 | 2.90 |
| February | ⛅ | 73.4°F | 35.4°F | 54.3°F | 70% | 86 | 2.2 | 3.80 |
| March | 🌤️ | 76.8°F | 37.6°F | 57.2°F | 70% | 68 | 2.2 | 5.10 |
| April | ☀️ | 83.7°F | 40.3°F | 62.1°F | 66% | 25 | 2.3 | 6.40 |
| May | ☀️ | 88.0°F | 45.5°F | 66.7°F | 63% | 12 | 2.3 | 7.10 |
| June | 😎 | 94.5°F | 49.8°F | 72.1°F | 56% | 3 | 2.3 | 7.60 |
| July | 😎 | 97.5°F | 55.0°F | 76.3°F | 51% | 2 | 2.2 | 7.50 |
| August | 😎 | 98.4°F | 56.1°F | 77.2°F | 50% | 4 | 2.1 | 6.90 |
| September | 😎 | 97.9°F | 53.1°F | 75.4°F | 52% | 7 | 1.9 | 5.80 |
| October | ☀️ | 91.2°F | 47.1°F | 69.3°F | 54% | 20 | 1.9 | 4.50 |
| November | ☀️ | 81.0°F | 39.2°F | 60.1°F | 59% | 43 | 2.1 | 3.30 |
| December | 🌤️ | 72.0°F | 34.5°F | 53.2°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.
🌤️ Limit midday outdoor exposure and stay hydrated — this is an intense Hot Summer.
☔ 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: 67.6°F), while the coldest year was 1982 (avg: 61.7°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 | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 46.6°F | 66.6°F | 86.5°F | 481 | 64% | 2.1 m/s |
2024 | 45.5°F | 65.3°F | 84.9°F | 498 | 63% | 2.1 m/s |
2023 | 44.2°F | 63.5°F | 82.8°F | 660 | 66% | 2.2 m/s |
2022 | 44.6°F | 65.8°F | 86.9°F | 279 | 59% | 2.1 m/s |
2021 | 45.1°F | 66.6°F | 88.0°F | 400 | 58% | 2.2 m/s |
2020 🔥 | 45.1°F | 67.1°F | 88.9°F | 266 | 59% | 2.1 m/s |
2019 | 43.9°F | 63.5°F | 83.1°F | 688 | 64% | 2.2 m/s |
2018 | 45.0°F | 65.7°F | 86.4°F | 366 | 59% | 2.1 m/s |
2017 | 44.4°F | 65.8°F | 87.1°F | 516 | 61% | 2.1 m/s |
2016 | 45.1°F | 65.8°F | 86.4°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.
