United States · urban-centre population 100,518
Simi Valley
Weather values are area-weighted across the 41 km² urban centre (1 ERA5 cells).
104.4
matching days / year for “Eternal spring” · 2021-2025 recent-weather sample (not a 30-year normal)
Monthly high (p10–p90)
Whiskers span the 10th–90th percentile daily high; the tick marks the monthly average.
- January: average 18°C, p10 13°C, p90 22°C
- February: average 18°C, p10 13°C, p90 24°C
- March: average 18°C, p10 13°C, p90 24°C
- April: average 21°C, p10 16°C, p90 26°C
- May: average 21°C, p10 18°C, p90 26°C
- June: average 25°C, p10 21°C, p90 31°C
- July: average 28°C, p10 25°C, p90 31°C
- August: average 29°C, p10 26°C, p90 33°C
- September: average 27°C, p10 22°C, p90 34°C
- October: average 25°C, p10 20°C, p90 31°C
- November: average 21°C, p10 16°C, p90 26°C
- December: average 18°C, p10 13°C, p90 23°C
Matching days by month · Eternal spring
- January: 6.8 matching days per year
- February: 8.0 matching days per year
- March: 8.2 matching days per year
- April: 12.8 matching days per year
- May: 13.0 matching days per year
- June: 9.4 matching days per year
- July: 5.0 matching days per year
- August: 0.6 matching days per year
- September: 5.6 matching days per year
- October: 13.0 matching days per year
- November: 13.2 matching days per year
- December: 8.8 matching days per year
Presets
- Eternal spring: 104.4 days/yr
- Mild and dry: 135.4 days/yr
- Beach weather: 120.8 days/yr
- Crisp and clear: 19.8 days/yr
- Warm, not sweaty: 139.4 days/yr