US
Napa climate and weather
Current conditions
18.9° / 8.7°
Overcast
- Feels like
- 18.8° / 6.6°
- Humidity
- —
- Wind
- 14.0 km/h (gusts 32.8)
- UV index
- 3.7
- Sunrise / sunset
- 06:47 / 16:58
- Daylight
- 10.2 hrs
7-day forecast
| Date | Weather | High | Low | Feels like | Precip | Rain | Wind | UV |
|---|---|---|---|---|---|---|---|---|
| Thu 12 Nov | Overcast | 18.9° | 8.7° | 18.8° / 6.6° | 0.0 mm | 5% | 14.0 km/h | 3.7 |
| Fri 13 Nov | Moderate rain | 17.3° | 10.3° | 16.3° / 9.4° | 4.8 mm | 100% | 22.2 km/h | 2.1 |
| Sat 14 Nov | Overcast | 17.3° | 10.2° | 15.9° / 9.6° | 0.0 mm | 23% | 7.8 km/h | 3.7 |
| Sun 15 Nov | Slight rain showers | 18.0° | 11.4° | 15.6° / 10.7° | 9.2 mm | 75% | 13.1 km/h | 3.6 |
| Mon 16 Nov | Slight rain | 15.8° | 11.0° | 14.8° / 10.0° | 1.7 mm | 55% | 6.1 km/h | 2.4 |
| Tue 17 Nov | Overcast | 16.9° | 7.8° | 14.1° / 6.0° | 0.0 mm | 26% | 8.0 km/h | 3.4 |
| Wed 18 Nov | Slight rain showers | 13.8° | 7.3° | 12.0° / 5.5° | 8.4 mm | 72% | 18.4 km/h | 0.9 |
Air quality
60
Moderate
US Air Quality Index
European AQI: 47
- PM2.5
- 26.2 µg/m³
- PM10
- 28.3 µg/m³
- Ozone (O₃)
- 32.0 µg/m³
- NO₂
- 37.8 µg/m³
- SO₂
- 2.6 µg/m³
- CO
- 275.0 µg/m³
- UV index
- 0.0
- Dust
- 2.0 µg/m³
Climate through the year
Now: November
Average high and low, °C Rainfall, mm
Temperature by month
Precipitation and rain days
Sunshine, UV and humidity
Best months to visit
| Month | Rating | Avg high | Avg low | Rain days | Sun (hrs) | Humidity |
|---|---|---|---|---|---|---|
| May | Excellent · 97 | 24.7°C | 10.1°C | 1.5 | 399.9 | 65.8% |
| June | Excellent · 90 | 27.6°C | 12.2°C | 0.8 | 396.0 | 63.7% |
| October | Excellent · 90 | 24.5°C | 11.0°C | 4.1 | 288.3 | 67.4% |
| April | Excellent · 85 | 20.5°C | 7.2°C | 2.8 | 342.0 | 73.2% |
| September | Excellent · 85 | 28.6°C | 13.5°C | 2.0 | 330.0 | 67.4% |
| July | Excellent · 80 | 29.8°C | 13.2°C | 0.0 | 399.9 | 65.9% |
| August | Excellent · 78 | 30.3°C | 13.8°C | 0.4 | 384.4 | 65.2% |
| November | Good · 60 | 18.0°C | 7.0°C | 6.8 | 243.0 | 75.6% |
| March | Fair · 45 | 16.6°C | 5.6°C | 9.9 | 279.0 | 75.9% |
| January | Fair · 43 | 14.7°C | 5.0°C | 7.9 | 210.8 | 79.3% |
| February | Fair · 37 | 15.9°C | 4.6°C | 8.1 | 226.8 | 75.9% |
| December | Poor · 23 | 13.9°C | 5.5°C | 12.0 | 182.9 | 86.5% |
Monthly climate data
| Month | High | Low | Mean | Feels high | Feels low | Precip | Rain days | Snow | Sun | Daylight | UV | Humidity | Wind | Clouds |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 14.7° | 5.0° | 9.3° | 13.0° | 2.6° | 128.9 mm | 7.9 | 0.0 cm | 210.8 hrs | 9.9 hrs | — | 79.3% | 12.7 km/h | 56.3% |
| Feb | 15.9° | 4.6° | 9.8° | 13.8° | 2.1° | 123.3 mm | 8.1 | 0.5 cm | 226.8 hrs | 10.8 hrs | — | 75.9% | 14.3 km/h | 49.3% |
| Mar | 16.6° | 5.6° | 10.7° | 14.9° | 3.4° | 124.0 mm | 9.9 | 1.1 cm | 279.0 hrs | 12.0 hrs | — | 75.9% | 15.6 km/h | 53.6% |
| Apr | 20.5° | 7.2° | 13.2° | 20.1° | 5.4° | 24.1 mm | 2.8 | 0.0 cm | 342.0 hrs | 13.2 hrs | — | 73.2% | 15.2 km/h | 44.0% |
| May | 24.7° | 10.1° | 16.6° | 24.4° | 8.8° | 9.8 mm | 1.5 | 0.0 cm | 399.9 hrs | 14.3 hrs | — | 65.8% | 16.9 km/h | 32.7% |
| Jun | 27.6° | 12.2° | 19.0° | 27.7° | 11.5° | 5.4 mm | 0.8 | 0.0 cm | 396.0 hrs | 14.8 hrs | — | 63.7% | 16.7 km/h | 33.7% |
| Jul | 29.8° | 13.2° | 20.1° | 30.2° | 13.0° | 0.2 mm | 0.0 | 0.0 cm | 399.9 hrs | 14.5 hrs | — | 65.9% | 15.6 km/h | 32.7% |
| Aug | 30.3° | 13.8° | 20.7° | 30.5° | 13.9° | 1.5 mm | 0.4 | 0.0 cm | 384.4 hrs | 13.6 hrs | — | 65.2% | 15.5 km/h | 29.4% |
| Sep | 28.6° | 13.5° | 19.8° | 28.2° | 13.6° | 14.4 mm | 2.0 | 0.0 cm | 330.0 hrs | 12.4 hrs | — | 67.4% | 14.3 km/h | 33.2% |
| Oct | 24.5° | 11.0° | 16.9° | 23.2° | 10.0° | 52.5 mm | 4.1 | 0.0 cm | 288.3 hrs | 11.2 hrs | — | 67.4% | 12.6 km/h | 39.8% |
| Nov | 18.0° | 7.0° | 11.9° | 16.4° | 5.1° | 85.4 mm | 6.8 | 0.0 cm | 243.0 hrs | 10.1 hrs | — | 75.6% | 11.3 km/h | 53.1% |
| Dec | 13.9° | 5.5° | 9.2° | 12.4° | 3.5° | 183.9 mm | 12.0 | 0.0 cm | 182.9 hrs | 9.5 hrs | — | 86.5% | 11.3 km/h | 68.3% |