PORTLAND INTL AIRPORT, OR

Average of Minimum Temperature (Degrees Fahrenheit)

(356751)

File last updated on April 17, 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
1938-----z-----z-----z44.90 49.10 54.30 58.23 55.10 56.83 49.61 38.97 37.45 49.39c
193938.55 34.25 39.52 44.03 49.58 51.30 56.45 56.55 53.83 48.61 43.53 40.61 46.40
194035.87 41.10 43.00 45.27 50.48 54.80 57.74 58.13 56.70 50.00 35.93 36.03 47.09
194135.19 37.14 40.58 43.13 48.06 52.63 58.26 58.00 52.00 46.77 41.27 38.06 45.93
194230.87 36.29 37.06 43.50 47.81 51.57 58.58 57.61 50.27 45.84 39.37 38.32 44.76
194326.45 34.32 37.45 44.53 46.00 51.00 55.45 55.71 52.03 47.16 38.67 33.61 43.53
194432.81 35.38 35.97 41.83 46.58 51.57 55.65 55.58 52.47 49.06 38.93 33.90 44.14
194536.32 37.96 38.35 42.13 49.16 50.60 56.00 55.42 49.50 44.23 40.07 34.74 44.54
194635.13 36.00 38.71 41.40 48.84 51.83 56.16 55.55 51.53 42.45 35.27 36.52 44.12
194730.97 36.61 39.71 43.20 49.29 52.93 56.39 54.77 51.67 48.94 41.43 37.52 45.29
194833.32 34.07 37.10 41.33 47.10 57.07 57.16 57.35 50.77 44.71 37.93 33.29 44.27
194921.03 32.96 38.26 41.80 48.48 50.53 54.61 55.55 51.27 39.45 41.30 36.48 42.64
195021.19 32.07 38.65 39.23 43.19 52.20 54.71 55.74 49.20 46.06 41.23 41.35 42.90
195135.03 36.04 34.45 40.87 46.45 51.87 55.68 53.42 50.20 45.74 40.23 32.42 43.53
195230.84 34.97 38.26 40.40 46.45 51.13 54.97 56.06 50.57 45.52 31.83 36.42 43.12
195342.58 36.32 38.13 40.93 45.52 50.80 54.42 54.97 50.30 44.19 42.23 38.32 44.89
195433.81 35.25 33.58 39.77 46.03 49.67 53.48 55.00 50.43 43.13 43.47 35.74 43.28
195534.61 33.54 33.77 37.93 42.77 50.70 54.68 53.68 48.87 46.16 35.87 33.74 42.19
195634.65 30.83 36.55 41.67 48.35 50.43 55.87 55.10 49.60 44.39 34.63 35.29 43.11
195725.90 33.18 39.35 42.23 50.23 52.57 54.48 53.81 51.40 44.32 34.90 38.52 43.41
195837.29 42.57 36.13 41.20 50.16 56.83 57.65 57.32 50.57 43.13 39.20 38.03 45.84
195935.29 36.75 38.65 42.50 46.23 54.00 56.58 53.81 51.30 45.39 35.03 33.16 44.06
196031.29 35.03 36.55 41.13 45.45 51.63 55.26 55.26 49.77 44.81 39.53 32.48 43.18
196136.97 41.64 40.58 41.47 47.35 53.33 57.45 57.71 47.87 43.97 34.90 35.68 44.91
196231.87 35.57 36.97 42.73 46.65 50.53 53.84 55.16 51.77 46.65 41.20 36.61 44.13
196328.68 40.21 36.71 41.23 45.71 51.50 54.06 55.74 53.70 45.26 39.33 31.97 43.68
196435.10 30.59 35.71 37.43 41.87 48.97 53.10 52.19 46.53 41.94 34.43 31.39 40.77
196535.06 36.21 35.52 41.63 43.97 49.70 56.00 57.00 47.93 47.45 43.53 33.52 43.96
196635.00 35.18 38.06 40.17 44.32 50.63 55.48 54.65 53.43 43.90 40.70 39.52 44.25
196738.23 34.68 36.00 37.57 45.97 54.27 55.90 57.68 52.77 45.74 38.40 35.10 44.36
196834.00 38.48 39.26 38.20 47.00 51.67 55.94 55.84 51.60 43.29 39.53 32.42 43.94
196927.39 32.39 34.13 40.20 47.35 56.93 55.19 53.68 52.83 44.35 40.17 37.94 43.55
197035.03 37.11 36.61 39.27 45.10 53.87 55.81 54.87 49.33 42.26 40.03 34.06 43.61
197135.45 35.14 35.35 39.10 45.87 50.60 56.94 59.61 49.90 43.71 39.50 35.35 43.88
197233.48 37.03 41.19 38.63 48.87 53.33 57.77 58.39 49.47 41.87 41.43 31.71 44.43
197332.87 36.57 40.03 41.07 47.58 53.50 57.03 54.32 52.90 45.84 39.10 39.74 45.05
197432.19 37.57 39.06 43.30 46.97 53.07 56.16 57.39 52.67 42.45 41.50 38.58 45.08
197536.10 34.68 37.61 38.03 46.55 51.70 57.90 55.29 51.63 46.97 39.87 37.23 44.46
197636.55 34.97 35.68 40.37 45.94 49.90 55.77 56.71 53.80 44.45 37.77 33.52 43.78
197728.32 36.79 38.06 40.40 45.26 52.40 54.77 59.26 51.77 44.03 36.97 37.10 43.76
197835.61 37.96 38.94 42.07 44.81 54.63 56.71 57.29 52.80 42.48 31.23 28.87 43.62
197926.00 37.00 40.97 44.27 49.65 53.47 57.58 58.52 55.20 49.48 38.53 38.87 45.79
198029.35 35.48 38.97 43.13 48.55 52.83 57.71 55.13 52.37 45.23 42.20 37.84 44.90
198136.52 36.07 39.23 43.53 48.77 53.00 56.71 58.77 53.20 44.23 41.17 37.42 45.72
198235.16 36.75 39.03 39.33 46.32 55.17 56.87 57.55 53.13 45.94 37.37 36.19 44.90
198338.29 41.18 43.68 42.43 50.39 54.63 57.77 59.35 51.13 44.84 44.70 32.48 46.74
198435.77 39.10 43.06 42.80 48.00 53.07 57.19 57.71 53.57 45.87 40.87 33.81 45.90
198528.94 33.46 36.71 44.43 48.29 53.27 60.74 57.45 50.97 43.84 31.57 26.84 43.04
198635.68 36.36 42.00 40.87 47.90 55.20 55.13 58.39 52.33 46.81 41.63 34.68 45.58
198733.52 37.68 40.74 43.60 49.61 53.63 56.94 56.94 52.43 44.55 41.93 33.87 45.45
198833.65 35.76 37.71 43.67 46.90 51.77 55.90 54.97 51.03 49.84 42.17 36.39 44.98
198936.65 28.50 38.48 45.20 48.26 53.57 55.90 56.58 50.80 46.10 42.10 34.61 44.73
199037.68 35.04 39.87 44.63 47.84 54.00 58.52 59.58 56.00 45.19 42.30 29.35 45.83
199131.16 39.89 37.77 42.00 47.06 51.40 57.26 58.48 53.30 43.87 41.83 37.58 45.13
199238.52 39.97 40.81 46.50 49.58 55.23 58.68 56.65 50.97 47.23 40.47 34.58 46.60
199330.77 32.79 39.10 45.20 50.90 53.37 55.84 57.32 51.17 47.00 33.77 34.71 44.33
199438.77 34.07 39.48 44.67 50.03 52.13 57.48 58.23 55.77 43.84 37.03 37.00 45.71
199538.48 37.96 39.03 41.90 49.84 53.37 59.52 55.61 56.60 45.74 46.23 37.42 46.81
199636.19 33.97 39.39 45.23 47.77 52.93 59.29 58.45 52.37 46.06 39.67 36.52 45.65
199736.29 34.86 38.94 42.63 51.71 53.70 58.42 60.35 56.03 46.65 43.70 36.06 46.61
199838.13 40.36 41.26 43.40 49.77 54.37 61.16 59.29 54.73 46.52 44.43 35.48 47.41
199937.74 38.11 38.87 40.97 45.90 53.03 56.06 59.52 50.97 44.74 44.23 38.68 45.74
200034.52 37.10 37.29 43.90 49.06 54.13 57.23 56.87 53.90 47.19 36.03 35.16 45.20
200135.45 33.57 39.39 41.30 47.29 51.53 55.97 58.29 53.90 44.77 42.23 36.97 45.06
200236.71 36.29 37.58 43.57 46.77 54.30 57.90 57.19 52.83 44.52 39.97 38.29 45.49
200338.77 36.96 42.13 43.40 48.06 54.80 58.48 58.39 55.07 50.39 38.93 37.81 46.93
200434.29 38.76 42.03 45.30 51.74 55.17 59.61 60.68 54.30 48.52 39.67 38.26 47.36
200535.61 33.25 39.84 44.23 51.81 53.67 59.06 58.13 51.47 49.87 37.07 35.29 45.77
200640.84 34.71 38.48 43.33 49.32 56.37 59.45 57.16 52.53 44.55 42.27 34.71 46.14
200731.81 38.00 42.52 42.97 47.61 53.57 59.87 57.97 52.03 45.19 37.63 36.35 45.46
200833.65 37.34 37.94 40.33 50.26 51.87 56.81 59.19 53.13 44.87 43.33 32.13 45.07
200933.90 32.43 38.06 42.23 48.74 56.60 60.58 59.26 55.07 47.00 41.37 29.61 45.40
201040.45 39.00 39.65 42.77 46.84 52.10 55.94 56.77 55.87 46.71 39.57 38.48 46.18
201136.06 34.14 39.74 39.83 45.61 53.23 56.45 59.23 55.77 49.16 38.50 32.84 45.05
201234.32 37.72 37.97 44.50 48.03 52.73 57.81 58.94 53.43 47.61 43.27 38.45 46.23
201332.97 38.07 39.94 43.40 49.87 55.33 57.58 60.90 56.70 43.58 38.80 31.13 45.69
201435.13 34.64 40.16 44.73 51.32 53.93 59.81 61.42 56.47 52.10 40.73 39.06 47.46
201537.00 41.54 41.97 42.60 51.48 57.87 61.13 60.45 53.37 51.16 38.53 39.13 48.02
201637.97 42.17 43.00 47.00 52.10 55.37 59.10 59.26 52.50 50.55 46.60 32.19 48.15
201727.97 34.79 41.06 42.73 49.32 55.33 57.29 60.16 55.63 44.35 42.10 34.16 45.41
201840.35 35.93 38.55 45.37 52.42 55.27 60.55 60.00 52.83 47.06 41.40 38.84 47.38
201937.10 32.25 36.74 46.10 51.61 54.77 60.29 60.90 56.77 42.10 39.23 38.00 46.32
202041.42 36.03 38.19 44.13 51.03 55.13 58.94 59.16 57.47 47.26 40.03 38.26 47.25
202139.58 36.61 38.13 43.03 49.65 58.77 60.61 60.97 55.10 47.45 44.73 36.48 47.59
202235.52 35.96 42.29 41.47 48.55 55.87 61.77 62.84 58.10 50.87 37.43 34.13 47.07
202338.26 34.46 37.74 43.93 53.06 54.80 60.90 63.61 56.70 49.23 40.90 40.87 47.87
202435.74 39.48 41.61 45.12n-----z-----z-----z-----z-----z-----z-----z-----z38.95i
Period of Record Statistics
MEAN34.48 36.17 38.75 42.33 48.06 53.23 57.19 57.38 52.66 45.88 39.75 35.69 45.11
S.D.4.05 2.68 2.20 2.14 2.28 2.00 1.96 2.24 2.43 2.46 3.14 2.85 1.47
SKEW-1.02 0.11 -0.00 -0.27 -0.15 0.27 0.33 0.21 0.13 0.33 -0.51 -0.56 -0.07
MAX42.58 42.57 43.68 47.00 53.06 58.77 61.77 63.61 58.10 52.10 46.60 41.35 48.15
MIN21.03 28.50 33.58 37.43 41.87 48.97 53.10 52.19 46.53 39.45 31.23 26.84 40.77
YRS86 86 86 86 86 86 86 86 86 86 86 86 85