SEATTLE TACOMA AIRPORT, WA

Average of Minimum Temperature (Degrees Fahrenheit)

(457473)

File last updated on March 28, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANN
194536.16 36.71 36.65 39.13 48.32 49.27 53.48 52.39 47.87 44.32 37.23 32.35 42.82
194633.23 34.82 35.61 39.13 45.94 48.77 53.61 52.55 48.67 39.58 33.20 33.48 41.55
194729.06 36.36 38.10 41.03 46.35 49.63 52.29 50.94 48.80 45.06 37.43 36.39 42.62
194832.48 32.62 34.71 37.30 44.35 51.70 51.58 53.00 47.17 41.97 36.37 30.81 41.17
194922.61 30.54 37.87 40.77 46.16 47.30 51.10 52.94 50.50 40.52 42.63 33.23 41.35
195019.06 33.86 36.16 37.47 41.61 50.50 52.16 52.16 47.27 42.61 38.33 40.42 40.97
195131.68 34.52a32.29 38.00 43.74 48.97 52.35 49.97 48.60 43.74 38.27 31.23 41.11
195231.26 34.69 35.81 38.07 44.06 47.27 51.35 52.03 47.73 45.03 33.63 36.26 41.43
195339.61 34.32 35.81 38.63 43.48 47.67 51.45 52.65 49.60 45.52 40.47 37.58 43.07
195431.42 35.68 31.42 37.57 44.16 47.77 50.68 52.61 51.13 42.13 43.53 35.77 41.99
195534.61 32.07 32.16 36.27 42.39 49.23 51.45 50.52 47.93 44.06 33.37 33.06 40.59
195633.61 30.55 34.13 39.40 46.39 49.17 53.68 52.35 49.27 43.32 36.90 35.32 42.01
195727.29 33.39 38.48 42.40 49.19 51.97 52.61 52.23 51.90 43.58 37.07 38.68 43.23
195838.48 41.71 36.39 40.40 50.19 54.87 56.16 54.77 51.47 45.87 38.13 40.06 45.71
195936.45 35.96 38.00 42.20 44.42 51.53 55.16 52.84 50.40 45.81 37.80 35.39 43.83
196034.77 35.62 36.68 41.17 44.81 49.63 53.81 53.58 49.50 46.03 38.40 34.03 43.17
196137.48 39.61 38.16 40.13 45.19 52.77 55.61 56.39 49.07 43.13 35.20 34.90 43.97
196232.84 36.68 35.81 41.47 43.74 49.73 52.65 52.81 50.13 46.03 41.37 37.48 43.39
196329.13 41.39 36.58 41.23 47.48 51.90 53.77 55.03 53.73 47.61 39.03 35.90 44.40
196435.16 34.45 37.48 39.03 43.55 50.23 54.71 53.94 50.53 45.48 37.30 31.48 42.78
196535.81 37.57 37.39 41.40 43.06 50.20 56.03 56.84 50.17 49.00 44.33 35.65 44.79
196636.26 38.00 37.94 42.03 44.97 50.17 53.48 53.97 53.53 44.58 40.13 39.58 44.55
196738.29 36.93 35.97 39.37 46.90 53.33 56.19 58.42 54.97 48.61 42.07 37.58 45.72
196836.13 40.48 41.71 40.67 48.52 52.20 55.84 55.26 52.30 45.45 41.73 32.03 45.19
196929.39 36.29 39.13 41.40 48.13 55.07 54.06 54.84 52.90 45.03 41.80 40.68 44.89
197036.87 40.57 38.90 39.53 45.90 52.57 54.74 55.03 51.03 43.87 41.03 35.16 44.60
197135.74 37.50 35.68 41.00 46.13 49.00 55.39 57.65 49.63 45.06 41.43 33.23 43.95
197232.19 35.55 40.77 39.73 49.03 52.10 56.06 55.84 47.57 43.29 41.63 34.55 44.03
197333.94 37.18 37.94 39.90 47.26 51.63 54.03 52.39 53.37 46.48 39.03 40.23 44.45
197433.84 38.25 39.68 44.03 47.26 52.73 54.23 53.97 52.70 43.23 40.07 37.65 44.80
197534.35 34.57 35.94 38.00 45.03 51.67 57.00 54.87 52.57 45.81 39.27 36.45 43.79
197637.23 35.00 34.26 41.03 47.23 50.57 55.87 57.06 54.30 47.45 41.37 39.58 45.08
197734.10 41.46 39.87 43.93 47.00 53.40 55.03 57.23 51.00 45.39 38.60 37.58 45.38
197839.97 40.32 41.23 42.47 45.84 53.93 55.39 56.48 52.30 46.48 35.27 32.16 45.15
197932.23 36.75 41.10 42.87 47.58 51.67 56.10 54.97 54.30 47.61 37.97 39.26 45.20
198029.74 38.03 38.55 42.80 46.48 50.23 54.26 52.94 51.83 45.39 41.47 39.94 44.30
198138.19 37.82 41.61 42.07 46.87 50.00 54.26 57.03 51.57 44.77 41.37 37.29 45.24
198235.39 36.68 36.94 38.83 45.61 53.00 53.81 55.68 52.33 45.84 37.23 35.87 43.93
198339.87 41.18 42.87 41.83 49.00 52.30 55.23 57.19 50.40 45.19 43.00 31.52 45.80
198438.55 38.90 41.74 41.00 45.19 50.60 54.68 55.03 51.37 42.90 39.83 32.10 44.32
198531.26 33.39 35.90 41.47 45.84 50.83 56.23 54.48 50.27 45.03 30.93 30.94 42.21
198638.94 36.36 41.71 41.07 47.68 52.67 53.13 56.77 51.07 46.74 40.97 36.58 45.31
198735.19 39.86 41.32 42.80 47.55 51.30 54.03 54.71 51.77 46.13 42.93 33.87 45.12
198834.68 38.10 37.84 42.37 46.06 50.30 53.94 54.45 50.10 49.23 40.43 37.06 44.55
198935.74 28.54 37.10 43.80 46.94 53.20 55.03 55.52 52.97 45.90 42.07 38.48 44.61
199037.74 33.96 39.00 44.27 46.29 51.23 56.77 56.48 53.87 44.19 41.37 30.39 44.63
199134.90 40.71 37.23 41.03 46.77 50.57 55.81 56.00 52.30 44.00 42.50 39.03 45.07
199238.32 40.03 41.52 44.30 48.42 54.10 57.00 55.77 50.67 47.87 40.47 34.32 46.07
199332.23 34.11 40.39 44.07 50.52 52.47 53.58 56.03 50.17 47.90 35.17 35.68 44.36
199440.35 34.64 40.13 44.47 49.00 51.93 56.81 57.71 54.90 46.13 37.40 36.94 45.87
199540.68 40.50 39.84 43.70 50.19 53.17 57.29 54.16 54.60 45.48 43.70 37.29 46.72
199635.13 35.66 39.84 44.33 45.68 50.87 57.16 55.87 51.07 44.74 38.13 34.32 44.40
199736.45 35.39 38.42 41.40 49.29 51.87 55.19 57.32 53.47 45.87 41.53 35.61 45.15
199837.39 40.25 39.97 42.20 48.39 51.70 57.81 56.19 53.13 45.81 42.47 35.61 45.91
199937.87 37.50 37.97 39.70 44.03 50.57 53.10 56.10 50.67 44.87 42.60 37.84 44.40
200035.29 37.48 37.97 42.97 47.00 51.83 55.00 53.97 51.77 46.00 36.43 35.45 44.26
200136.35 33.64 38.68 40.87 45.81 49.87 53.16 55.77 51.80 44.94 41.80 36.26 44.08
200236.74 35.46 36.19 41.83 45.26 51.97 55.71 54.71 51.10 44.84 40.70 38.16 44.39
200340.35 35.75 41.16 42.47 46.68 53.20 56.68 56.06 53.47 48.26 37.10 36.87 45.67
200435.68 38.00 40.55 43.63 49.10 53.77 58.00 58.13 52.33 47.26 39.73 38.03 46.18
200536.77 34.11 41.87 43.57 50.61 52.43 55.77 56.16 50.87 48.23 38.27 37.90 45.55
200642.32 36.18 38.32 41.93 47.45 53.97 56.94 54.68 52.17 45.45 39.23 35.35 45.33
200732.39 38.54 40.74 42.53 46.74 51.33 58.26 56.42 52.47 44.00 39.20 35.97 44.88
200833.77 38.24 37.03 38.90 48.29 49.93 54.94 57.16 52.20 45.13 43.80 32.97 44.36
200934.42 34.75 35.39 40.63 46.61 54.40 57.94 56.48 53.23 45.94 41.27 32.10 44.43
201042.48 40.50 39.61 42.47 45.52 51.00 54.19 55.55 54.43 46.77 38.03 38.45 45.75
201137.32 33.46 38.90 38.83 44.90 51.17 54.74 55.81 54.47 46.39 36.80 34.03 43.90
201234.77 37.76 37.10 42.80 46.74 50.87 55.29 57.23 52.23 47.10 41.40 37.94 45.10
201333.45 39.79 40.97 44.07 49.87 55.70 57.10 59.87 56.47 45.74 42.07 34.77 46.65
201439.35 36.71 41.77 44.10 50.39 53.17 57.97 58.81 55.83 51.58 40.07 40.26 47.50
201539.84 42.96 43.16 42.83 50.23 56.43 59.90 58.45 52.47 50.90 38.23 38.87 47.86
201638.35 41.24 42.29 47.50 50.71 53.93 57.65 57.90 52.87 49.10 45.70 34.00 47.60
201732.03 36.00 40.55 43.97 48.84 53.70 56.32 59.00 55.57 45.29 42.00 34.55 45.65
201840.29 36.50 38.61 44.10 51.48 53.40 58.52 58.52 54.10 47.03 43.23 39.42 47.10
201938.87 31.57 39.68 45.57 51.23 53.90 58.55 59.87 56.13 43.71 40.70 40.74 46.71
202040.77 37.76 38.32 43.63 50.55 53.37 57.23 57.42 56.73 48.45 41.23 38.94 47.03
202138.84 36.29 37.94 43.23 48.10 55.53 56.87 57.13 53.43 45.77 42.70 34.16 45.83
202235.74 36.36 40.77 39.43 45.19 53.20 57.81 59.06 55.07 49.10 35.77 34.35 45.15
202338.58 35.04 37.16 41.67 51.16 52.00 56.97 59.94 53.43 47.74 38.67 40.39 46.06
202436.68 39.07 40.15d-----z-----z-----z-----z-----z-----z-----z-----z-----z38.63i
Period of Record Statistics
MEAN35.41 36.71 38.38 41.51 46.96 51.68 55.14 55.44 51.86 45.66 39.63 36.02 44.53
S.D.3.99 2.87 2.51 2.17 2.26 1.96 2.02 2.26 2.25 2.09 2.85 2.73 1.61
SKEW-1.26 -0.17 -0.40 -0.11 0.07 -0.05 -0.14 -0.17 -0.06 0.06 -0.56 -0.14 -0.48
MAX42.48 42.96 43.16 47.50 51.48 56.43 59.90 59.94 56.73 51.58 45.70 40.74 47.86
MIN19.06 28.54 31.42 36.27 41.61 47.27 50.68 49.97 47.17 39.58 30.93 30.39 40.59
YRS80 80 80 79 79 79 79 79 79 79 79 79 79