Seattle, Washington, United States Climate

Weather: 9.56°C/49.21°F, Wind SW at 6.69 km/h, 53% Humidity, 0% Chance of rain

United States
(Photo by Anthony Fomin on Unsplash)
Contents

Seattle Climate Summary

Located at an elevation of 56.08 meters (183.99 feet) above sea level, Seattle has a Mediterranean, warm summer climate (Classification: Csb). The district’s yearly temperature is 12.8ºC (55.04ºF) and it is 0.16% higher than United States’s averages. Seattle typically receives about 54.3 millimeters (2.14 inches) of precipitation and has 134.18 rainy days (36.76% of the time) annually.

CountryUnited States
CityWashington
Longitude-122.3320708
Latitude47.6062095
Attitude/Elevation56.08m (183.99ft)
Local timeFriday 07:44
Annual high temperature16.07ºC (60.93ºF)
Annual low temperature6.86ºC (44.35ºF)
Average annual precip.54.3mm (2.14in)
Warmest monthAugust (26.62ºC / 79.92ºF)
Coldest MonthFebruary (2.02ºC / 35.64ºF)
Wettest MonthJanuary (87.4mm / 3.44in)
Driest MonthJuly (12.2mm / 0.48in)
Number of days with rainfall (≥ 1.0 mm)134.18 days (36.76%)
Days with no rain230.82 days (63.24%)
Humidity77.87%

Climate Seattle: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)16.0(60.8)18.0(64.4)27.0(80.6)29.0(84.2)31.0(87.8)34.0(93.2)38.0(100.4)39.0(102.2)36.0(96.8)30.0(86.0)22.0(71.6)15.0(59.0)39.0(102.2)
Average high °C (°F)8.02(46.44)8.66(47.59)11.41(52.54)14.29(57.72)19.35(66.83)21.63(70.93)26.23(79.21)26.62(79.92)22.66(72.79)16.43(61.57)10.35(50.63)7.24(45.03)16.07(60.93)
Daily mean °C (°F)5.45(41.81)5.9(42.62)8.26(46.87)11.06(51.91)16.03(60.85)18.44(65.19)22.27(72.09)22.24(72.03)18.45(65.21)12.94(55.29)7.71(45.88)4.81(40.66)12.8(55.04)
Average low °C (°F)2.43(36.37)2.02(35.64)3.43(38.17)5.06(41.11)7.76(45.97)9.54(49.17)12.42(54.36)13.41(56.14)11.68(53.02)8.06(46.51)4.46(40.03)2.05(35.69)6.86(44.35)
Record low °C (°F)-8.0(17.6)-10.0(14.0)-3.0(26.6)-2.0(28.4)-2.0(28.4)2.0(35.6)5.0(41.0)5.0(41.0)5.0(41.0)0.0(0)-11.0(12.2)-8.0(17.6)-11.0(12.2)
Average precipitation mm (inches)87.4(3.44)68.78(2.71)74.8(2.94)55.11(2.17)37.85(1.49)28.46(1.12)12.2(0.48)16.04(0.63)37.06(1.46)68.0(2.68)86.57(3.41)79.36(3.12)54.3(2.14)
Average precipitation days (≥ 1.0 mm)16.6414.0915.6412.369.919.03.363.648.5512.4515.0913.4511.18
Average relative humidity (%)83.8383.8681.3378.6874.3773.6569.3770.1274.0378.482.4784.377.87
Mean monthly sunshine hours6.256.489.512.0813.1713.413.7913.4811.457.356.466.119.96

Climate Graph

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

Seattle

Seattle Temperature by Month

July
22.27°C | 72.09°F
August
22.24°C | 72.03°F
September
18.45°C | 65.21°F
June
18.44°C | 65.19°F
May
16.03°C | 60.85°F
October
12.94°C | 55.29°F
April
11.06°C | 51.91°F
March
8.26°C | 46.87°F
November
7.71°C | 45.88°F
February
5.9°C | 42.62°F
January
5.45°C | 41.81°F
December
4.81°C | 40.66°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
  • 2013
  • 2012
  • 2011
  • 2010
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature26.0°C (78.8°F)17.16°C (62.89°F)11.0°C (51.8°F)
Avg Temperature19.0°C (66.2°F)13.74°C (56.73°F)10.0°C (50.0°F)
Min Temperature13.0°C (55.4°F)8.77°C (47.79°F)4.0°C (39.2°F)
Dew PointMaxAverageMin
Dew Point13.0°C (55.4°F)8.23°C (46.81°F)4.0°C (39.2°F)
PrecipitationMaxAverageMinSum
Precipitation11.4mm | 0.45in1.94mm | 0.08in0.0mm | 0in60.1mm | 2.37in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind12.0kmh | 7.46mph5.39kmh | 3.35mph2.0kmh | 1.24mph
Gust Wind18.0kmh | 11.18mph8.0kmh | 4.97mph2.0kmh | 1.24mph
Sea Level PressureMaxAverageMin
Sea Level Pressure11.4mb1.94mb0.0mb
Seattle

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
October° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2018-10-0115 | 59.013 | 55.4888 | 4.9729.83 | 10102.9 | 0.11
2018-10-0213 | 55.49 | 48.28010 | 6.2129.8 | 10092.4 | 0.09
2018-10-0311 | 51.84 | 39.2735 | 3.1130.0 | 10160.0 | 0.0
2018-10-0414 | 57.25 | 41.0704 | 2.4930.0 | 10160.0 | 0.0
2018-10-0510 | 50.07 | 44.6876 | 3.7330.0 | 10166.3 | 0.25
2018-10-0613 | 55.47 | 44.6825 | 3.1130.12 | 10200.1 | 0.0
2018-10-0711 | 51.88 | 46.4904 | 2.4930.15 | 10212.1 | 0.08
2018-10-0812 | 53.610 | 50.0932 | 1.2430.0 | 10161.5 | 0.06
2018-10-0913 | 55.410 | 50.0875 | 3.1129.94 | 10144.1 | 0.16
2018-10-1014 | 57.29 | 48.2834 | 2.4930.03 | 10170.0 | 0.0
2018-10-1114 | 57.28 | 46.4763 | 1.8630.09 | 10190.0 | 0.0
2018-10-1215 | 59.09 | 48.2784 | 2.4930.09 | 10190.0 | 0.0
2018-10-1314 | 57.27 | 44.6747 | 4.3530.27 | 10250.0 | 0.0
2018-10-1415 | 59.04 | 39.2575 | 3.1130.39 | 10290.0 | 0.0
2018-10-1515 | 59.06 | 42.8615 | 3.1130.33 | 10270.0 | 0.0
2018-10-1617 | 62.67 | 44.6624 | 2.4930.3 | 10260.0 | 0.0
2018-10-1719 | 66.28 | 46.4573 | 1.8630.18 | 10220.0 | 0.0
2018-10-1816 | 60.88 | 46.4653 | 1.8630.18 | 10220.0 | 0.0
2018-10-1917 | 62.69 | 48.2712 | 1.2430.27 | 10250.0 | 0.0
2018-10-2015 | 59.010 | 50.0806 | 3.7330.15 | 10210.0 | 0.0
2018-10-2116 | 60.89 | 48.2753 | 1.8630.03 | 10170.0 | 0.0
2018-10-2217 | 62.610 | 50.0732 | 1.2429.94 | 10140.0 | 0.0
2018-10-2313 | 55.49 | 48.2797 | 4.3529.94 | 10140.8 | 0.03
2018-10-2413 | 55.49 | 48.2845 | 3.1130.03 | 10170.0 | 0.0
2018-10-2512 | 53.69 | 48.2867 | 4.3530.03 | 10177.2 | 0.28
2018-10-2615 | 59.011 | 51.88710 | 6.2130.0 | 10167.0 | 0.28
2018-10-2712 | 53.67 | 44.6805 | 3.1130.0 | 101611.4 | 0.45
2018-10-2812 | 53.69 | 48.28412 | 7.4629.91 | 10136.3 | 0.25
2018-10-2910 | 50.07 | 44.6896 | 3.7330.15 | 10212.4 | 0.09
2018-10-3011 | 51.87 | 44.6886 | 3.7330.3 | 10261.5 | 0.06
2018-10-3112 | 53.610 | 50.0939 | 5.5930.06 | 10184.1 | 0.16

Seattle 11 Year Historical Weather Data

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