Napa, California, United States Climate

Weather: 10.9°C/51.62°F, Wind SW at 2.57 km/h, 78% Humidity, 0% Chance of rain

United States
(Photo by Bel R on Unsplash)
Contents

Napa Climate Summary

Located at an elevation of None meters (0 feet) above sea level, Napa has a Mediterranean, warm summer climate (Classification: Csb). The district’s yearly temperature is 18.06ºC (64.51ºF) and it is 5.42% higher than United States’s averages. Napa typically receives about 13.67 millimeters (0.54 inches) of precipitation and has 15.35 rainy days (4.21% of the time) annually.

CountryUnited States
CityCalifornia
Longitude-122.286865
Latitude38.2975381
Attitude/ElevationNonem (0ft)
Local timeSunday 11:18
Annual high temperature22.02ºC (71.64ºF)
Annual low temperature11.78ºC (53.2ºF)
Average annual precip.13.67mm (0.54in)
Warmest monthAugust (29.62ºC / 85.32ºF)
Coldest MonthFebruary (7.52ºC / 45.54ºF)
Wettest MonthFebruary (35.38mm / 1.39in)
Driest MonthJune (0.04mm / 0.0in)
Number of days with rainfall (≥ 1.0 mm)15.35 days (4.21%)
Days with no rain349.65 days (95.79%)
Humidity62.95%

Climate Napa: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)21.0(69.8)25.0(77.0)25.0(77.0)31.0(87.8)34.0(93.2)38.0(100.4)35.0(95.0)37.0(98.6)41.0(105.8)37.0(98.6)29.0(84.2)21.0(69.8)41.0(105.8)
Average high °C (°F)14.45(58.01)15.64(60.15)15.96(60.73)20.4(68.72)22.34(72.21)27.83(82.09)28.96(84.13)29.62(85.32)28.88(83.98)25.91(78.64)19.82(67.68)14.41(57.94)22.02(71.64)
Daily mean °C (°F)11.77(53.19)12.19(53.94)12.74(54.93)16.68(62.02)18.7(65.66)23.34(74.01)24.12(75.42)24.61(76.3)23.74(74.73)21.15(70.07)15.82(60.48)11.86(53.35)18.06(64.51)
Average low °C (°F)8.37(47.07)7.52(45.54)8.11(46.6)10.53(50.95)11.96(53.53)14.54(58.17)14.69(58.44)16.03(60.85)15.76(60.37)14.66(58.39)10.68(51.22)8.49(47.28)11.78(53.2)
Record low °C (°F)0.0(0)2.0(35.6)3.0(37.4)5.0(41.0)8.0(46.4)9.0(48.2)11.0(51.8)12.0(53.6)9.0(48.2)8.0(46.4)4.0(39.2)5.0(41.0)0.0(0)
Average precipitation mm (inches)34.25(1.35)35.38(1.39)30.17(1.19)6.63(0.26)13.52(0.53)0.04(0.0)0.87(0.03)0.68(0.03)0.4(0.02)2.35(0.09)16.95(0.67)22.76(0.9)13.67(0.54)
Average precipitation days (≥ 1.0 mm)2.641.913.271.181.270.00.360.270.090.271.452.641.28
Average relative humidity (%)77.6565.1573.371.1168.356.3358.858.6256.0246.352.7771.0962.95
Mean monthly sunshine hours8.699.99.8110.6912.5614.3513.1811.4911.5510.998.667.2310.76

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Napa in recent years.

Napa

Napa Temperature by Month

August
24.61°C | 76.3°F
July
24.12°C | 75.42°F
September
23.74°C | 74.73°F
June
23.34°C | 74.01°F
October
21.15°C | 70.07°F
May
18.7°C | 65.66°F
April
16.68°C | 62.02°F
November
15.82°C | 60.48°F
March
12.74°C | 54.93°F
February
12.19°C | 53.94°F
December
11.86°C | 53.35°F
January
11.77°C | 53.19°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature35.0°C (95.0°F)29.26°C (84.67°F)24.0°C (75.2°F)
Avg Temperature30.0°C (86.0°F)24.74°C (76.53°F)20.0°C (68.0°F)
Min Temperature19.0°C (66.2°F)14.81°C (58.66°F)12.0°C (53.6°F)
Dew PointMaxAverageMin
Dew Point14.0°C (57.2°F)11.65°C (52.97°F)8.0°C (46.4°F)
PrecipitationMaxAverageMinSum
Precipitation0.2mm | 0.01in0.01mm | 0.0in0.0mm | 0in0.2mm | 0.01in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind11.0kmh | 6.84mph8.52kmh | 5.29mph6.0kmh | 3.73mph
Gust Wind14.0kmh | 8.7mph11.26kmh | 7.0mph9.0kmh | 5.59mph
Sea Level PressureMaxAverageMin
Sea Level Pressure0.2mb0.01mb0.0mb
Napa

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
July° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2019-07-0122 | 71.610 | 50.0629 | 5.5930.0 | 10160.0 | 0.0
2019-07-0223 | 73.411 | 51.8599 | 5.5929.94 | 10140.0 | 0.0
2019-07-0323 | 73.411 | 51.8619 | 5.5929.88 | 10120.0 | 0.0
2019-07-0424 | 75.212 | 53.6617 | 4.3529.91 | 10130.0 | 0.0
2019-07-0525 | 77.011 | 51.8578 | 4.9729.97 | 10150.0 | 0.0
2019-07-0624 | 75.211 | 51.8568 | 4.9729.94 | 10140.0 | 0.0
2019-07-0722 | 71.611 | 51.86410 | 6.2129.91 | 10130.0 | 0.0
2019-07-0820 | 68.012 | 53.67211 | 6.8429.97 | 10150.0 | 0.0
2019-07-0921 | 69.813 | 55.47110 | 6.2130.03 | 10170.0 | 0.0
2019-07-1024 | 75.214 | 57.26910 | 6.2130.06 | 10180.0 | 0.0
2019-07-1126 | 78.814 | 57.2649 | 5.5930.0 | 10160.0 | 0.0
2019-07-1226 | 78.814 | 57.2618 | 4.9729.88 | 10120.0 | 0.0
2019-07-1326 | 78.813 | 55.4578 | 4.9729.85 | 10110.0 | 0.0
2019-07-1425 | 77.011 | 51.8538 | 4.9729.97 | 10150.0 | 0.0
2019-07-1527 | 80.612 | 53.65110 | 6.2129.97 | 10150.0 | 0.0
2019-07-1625 | 77.012 | 53.66110 | 6.2129.88 | 10120.0 | 0.0
2019-07-1726 | 78.813 | 55.4617 | 4.3529.88 | 10120.0 | 0.0
2019-07-1823 | 73.414 | 57.26911 | 6.8429.88 | 10120.0 | 0.0
2019-07-1922 | 71.613 | 55.4719 | 5.5929.85 | 10110.0 | 0.0
2019-07-2022 | 71.613 | 55.46910 | 6.2129.88 | 10120.0 | 0.0
2019-07-2125 | 77.012 | 53.6607 | 4.3529.88 | 10120.0 | 0.0
2019-07-2227 | 80.611 | 51.8487 | 4.3529.94 | 10140.2 | 0.01
2019-07-2326 | 78.810 | 50.0478 | 4.9729.97 | 10150.0 | 0.0
2019-07-2429 | 84.28 | 46.4366 | 3.7329.94 | 10140.0 | 0.0
2019-07-2528 | 82.48 | 46.4347 | 4.3529.91 | 10130.0 | 0.0
2019-07-2625 | 77.011 | 51.8518 | 4.9729.97 | 10150.0 | 0.0
2019-07-2730 | 86.011 | 51.8446 | 3.7329.97 | 10150.0 | 0.0
2019-07-2830 | 86.011 | 51.8407 | 4.3529.91 | 10130.0 | 0.0
2019-07-2924 | 75.211 | 51.85910 | 6.2129.91 | 10130.0 | 0.0
2019-07-3022 | 71.611 | 51.8629 | 5.5929.91 | 10130.0 | 0.0
2019-07-3125 | 77.012 | 53.6638 | 4.9729.91 | 10130.0 | 0.0

Napa 3 Year Historical Weather Data

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