N WILLAMETTE EXP STN, OR

Maximum of Precipitation (Inches)

(356151)

File last updated on March 29, 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
19630.36a0.90 1.97 -----z1.71 0.37 0.25 0.15 0.29 0.85 1.08 0.88 -----z
19641.42 0.20 0.41 0.23 0.15 0.34 0.33 0.11 1.07 0.28 0.96 2.30 2.30
19651.40 0.52 0.98 1.28 0.32 0.23 0.12 0.39 0.05 1.04 1.39 1.69 1.69
19661.86 0.44 1.34 0.62 0.47 0.31 0.47 0.26 0.59 0.67 1.03 1.12 1.86
19671.14 0.42 0.80 0.58 0.85 0.39 0.00 0.00 0.17 1.03 0.55 0.95 1.14
19680.80 1.99 0.75 0.37 0.83 0.58 0.49 0.86 1.08a1.20 1.20 2.06b2.06c
19691.03 1.25 0.40 0.46 0.48 0.70a0.07 0.08 1.53 1.13 0.82 1.52 1.53a
19701.55 2.10 0.83b0.37 0.33 0.16 0.04 0.00 0.33 0.53 1.12 1.09 2.10b
19711.19 0.51 0.79 1.58 0.57 1.53 0.06 0.21 1.31 0.80 1.24 1.17a1.58a
19722.00 0.60 0.95 0.48 1.54 0.26 0.25 0.41 0.67 0.41 0.61 1.95 2.00
19731.14 0.85 0.51b0.43 0.47 0.60 0.01 0.45 0.52 0.70 2.19 1.11 2.19b
19742.01 0.99 1.11 0.40 0.43 0.41 1.00 0.02 0.25 0.70 1.88 1.45 2.01
19751.99 0.58 0.59 0.55 0.91 0.30 0.30 0.80 0.00 0.94 0.79 1.62 1.99
19760.83 1.86 0.67 0.57 0.35 0.29 0.40 0.62 0.46 0.52 0.72 0.70 1.86
19770.72 0.80 0.69 0.16 0.68 1.12 0.70 1.36 0.88 0.47 1.00 1.84 1.84
19780.66 0.48 0.28 0.46 1.40 0.42 0.73 0.42 0.58 0.20 1.99 0.84 1.99
19791.10 1.20 0.98 0.46 0.98 0.25 0.22 0.26 1.08 1.30 0.70 1.20 1.30
19802.01 0.80 0.66 0.60 0.28 0.70 0.14 0.38 0.55 0.34 1.16 2.00 2.01
19810.36 0.80 0.75 0.42 0.50 1.50 0.19 0.03 1.05 1.40 1.60 1.76 1.76
19820.99 1.28 0.58 4.20 0.44a0.39 0.10 0.49 1.04 1.35 0.95 1.50 4.20a
19831.48 1.25 1.66 0.51 0.46 0.80 1.00 1.40 0.68 1.20 1.62 1.25 1.66
19840.68 1.03 0.50 0.98 1.03 1.59 0.00 0.03 1.11 0.97 2.85 1.06 2.85
19850.16 0.78 1.33 0.29 0.30 1.58 0.45 0.61 0.70 0.58 0.85 0.85 1.58
19860.62 1.00 0.65 0.28 0.66 0.17 0.88 0.04 0.76 0.86 1.22 0.99 1.22
19870.81 1.90 0.90 0.51 0.41 0.17 1.76 0.09 0.32 0.23 0.46 2.09 2.09
19881.33 0.43 1.00 0.80 0.40 0.83 0.07 0.03 0.66 0.07 1.04 0.76 1.33
19890.81 1.09 0.80 0.25 0.45 0.33 0.31 0.64 0.91 0.50 1.07 1.90 1.90
19901.11 0.69 0.67 0.59 0.32 0.84 0.21 0.63 0.38 1.16 0.97 1.00 1.16
19910.73 0.63 0.58 0.91 1.78 0.96 0.14 0.38 0.18 1.28 1.18 1.11 1.78
19920.74 1.82 0.56 0.95 0.09 0.40 0.56 0.48 1.06 1.88 0.88 1.59 1.88
19931.00b0.07e1.40 0.52 0.74 0.52 1.32 0.15 0.00 0.63 0.35 1.40 1.40g
19941.56 2.13 0.62 0.38 0.50 0.39 0.06 0.02 0.30 4.80 3.00 1.59 4.80
19951.19 1.37b0.72 1.30 0.47 0.70 0.44a0.45 0.72 2.45 1.60 1.25 2.45c
19961.12 2.70 1.32 0.88 0.76 0.40 0.49 0.14 1.35 1.05 3.71 1.94 3.71
19972.02 0.70 1.12 0.88 0.98 0.65 0.62 0.41 0.68 1.29 1.04 1.06 2.02
19981.35 1.04 1.30 0.25 0.70 0.31 0.13 0.25 0.35 1.35 2.18 0.18 2.18
19991.28 1.36 0.87 0.35 0.70 0.33 0.14 0.18 0.05 0.72 1.89 0.78 1.89
20000.97 0.77 0.98 1.07 0.28 0.38 0.01 0.00 -----z1.07 1.13 0.56 -----z
20010.30 0.29 0.67 0.25 0.76 0.30 0.25 1.04 0.45 0.85 -----z-----z-----z
2002-----z-----z1.62 0.82 0.43 1.12 0.06 0.14 1.14 -----z0.79 1.35 -----z
20031.94 1.33 1.65 1.21 0.44 0.12 0.00 0.19 0.57 0.39 0.85 1.72 1.94
20040.91 0.69 0.23 0.32 0.43 0.78 0.06 0.70 0.60 0.93 1.01 0.71 1.01
20050.48 0.21 1.38 0.38 0.80 0.70 0.38 0.00 2.04 0.47a1.66 2.07 2.07a
20061.37 0.74 0.70 0.57 0.73 0.45 0.05 0.10 0.43 0.49 2.10 1.69 2.10
20071.40 0.95 2.00 0.69 0.32 0.33 0.46 0.38 -----z-----z-----z-----z-----z
Period of Record Statistics
MEAN1.13 0.99 0.92 0.69 0.64 0.58 0.35 0.35 0.67 0.96 1.31 1.34 2.03
S.D.0.50 0.58 0.42 0.63 0.38 0.39 0.38 0.34 0.44 0.76 0.70 0.49 0.76
SKEW0.20 0.92 0.84 4.08 1.43 1.32 1.77 1.35 0.73 3.22 1.49 -0.03 2.04
MAX2.02 2.70 2.00 4.20 1.78 1.59 1.76 1.40 2.04 4.80 3.71 2.30 4.80
MIN0.16 0.07 0.23 0.16 0.09 0.12 0.00 0.00 0.00 0.07 0.35 0.18 1.01
YRS44 44 45 44 45 45 45 45 43 43 43 43 39