SAINT HELENS RFD, OR

Total of Precipitation (Inches)

(357466)

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
1976-----z-----z-----z-----z-----z-----z-----z3.84 1.12 1.28 0.81 1.96 9.01g
19771.41 2.65 5.34 1.11 4.98 0.86 0.81 3.45 4.59 2.84 6.63 10.20 44.87
19786.22 -----z2.32 4.68 3.33 1.94 1.07 2.26 3.25 0.79 4.41 3.41 33.68a
19791.12 8.06 2.68 3.60 2.41 1.29 0.40 1.62 -----z-----z3.93 7.69 32.80b
19808.62 4.99 3.38 3.69 2.10 1.87 0.30 0.36 0.98 1.58 6.67b7.82 42.36
19812.44 4.19 3.85a3.26a3.36 3.76 0.27 0.01 2.98 5.26 6.24a8.96 44.58
19828.26 6.97 3.61 4.09 0.65 1.88 0.93 1.34 3.34 4.99 5.72 11.79 53.57
19832.51h9.98 10.28 3.14 1.97 3.22 3.65 2.41 1.39 1.31a12.58a5.55 55.48a
19844.04a5.63 4.37 4.73 5.24c4.01 0.05 0.37 2.40 4.26 11.14 4.29 50.53
19850.41b3.17 4.80 1.30 1.48 2.34 0.34 1.47a2.18 3.69 3.30a2.25a26.73
19867.78 5.69 2.51a2.72d3.53 0.41 0.98 0.25 -----z2.76 7.03 4.91a38.57a
19878.29 4.44 7.43 1.80 3.07 0.18 0.97 0.46 0.23a0.25 2.94 10.35 40.41
19886.27 2.37a5.00 3.17 2.64 2.35a0.75a0.89 2.22 0.51 10.18a3.34 39.69
19894.99 3.25 6.38 3.04 2.26 1.52 1.24a1.92 0.39 2.75 3.69 2.77 34.20
199010.80 6.27b2.66 2.32 3.06 1.53 0.46 0.83 0.37 7.76 5.61 3.42d45.09
19912.71 4.09 5.09 7.49 2.24 1.88 0.31 1.51 0.32 2.09 8.26 5.36 41.35
19925.82 5.85a1.90 4.85 0.04 1.44 0.85 0.46 1.61a3.17a5.96b7.07a39.02
19934.99a0.66 4.44a7.83a4.58 3.23 2.57 0.10 0.03 1.48 4.40 6.24a40.55
19943.36a5.83 2.52a2.85 0.84a2.18 0.05 0.18 2.04 4.33a6.92 10.86 41.96
19956.33a3.67 5.89 4.07 2.91 2.53 1.41 0.96c2.70 4.94 8.69a9.83a53.93
19967.19b9.73 2.24 6.34 4.59 1.32b0.72 0.66 2.74 5.36 9.77 13.73 64.39
199710.68 4.64 8.35 4.98 2.62 3.60a0.88 2.38 3.23 7.00 7.28 4.04 59.68
19988.53 6.08 4.68a1.29 5.26a1.69 0.43 0.03 1.22 4.17b13.29a8.37 55.04
19998.79c10.87 4.79 2.06 3.73 2.08a0.80 0.55c0.21b2.78a9.79c5.47 51.92
20006.95 5.68c4.16a3.16 3.68 2.76 0.20 0.42a2.44 3.49 2.59a4.55 40.08
20012.50a2.27 3.12a2.86b0.71e2.07 0.82 0.88 0.98 3.21d8.19 8.07f27.61a
20028.01h4.21e6.38i2.68 1.05a1.39 0.04 0.18 0.32a0.78 3.52a11.85a26.02b
20039.31b2.29a5.25e6.51 0.99 0.43 0.09 0.85 1.79 3.15 1.65a7.87 40.18
20045.74e4.82e2.68 2.22 3.44 1.83 0.00 3.58 2.33 3.89 1.23 3.78 35.54
20053.77h1.03 4.00 4.28f4.64 4.72a0.85 0.54b1.76b5.07i7.82 8.67a34.03c
200615.03d5.02b6.58b2.23 -----z0.92c0.30 0.30 2.26 1.69 15.03f8.13 42.46b
20075.00s5.58a3.27e2.39j1.28f0.78a0.37 0.78 1.32i2.34 3.16 12.73h16.28e
20085.83d4.06b3.82a2.54p0.59 1.61g0.10b1.78e0.00 2.29 7.58b0.10d26.15b
20095.81 1.67 4.98a2.39 4.55 0.28 0.00 -----z-----z-----z-----z-----z19.68e
2010-----z-----z-----z4.38 3.21a3.20a0.61 0.00 1.81 4.12 7.18 9.81 34.32c
20116.58 5.50c8.91 5.12a3.06c0.89b1.41b0.01f0.47f3.60c8.54b2.20e45.81b
20126.95d3.64e9.06d3.27d4.75e3.17i0.08h0.00i0.02k5.94g9.33b8.65g37.00f
20133.36e1.81f2.40e2.67e4.24f2.03g0.00f0.43l7.38a1.06p3.56 1.36d20.73f
20142.52e6.26g6.97e3.83c2.65g2.64n0.56b0.29n1.90 4.96u5.04e7.94 28.76e
20152.90g6.15k4.49o1.07u-----z-----z-----z-----z-----z-----z-----z-----z0.00l
Period of Record Statistics
MEAN6.05 4.85 4.71 3.59 2.87 1.95 0.71 1.11 1.89 3.15 6.34 6.46 44.80
S.D.3.16 2.38 2.13 1.65 1.48 1.12 0.72 1.06 1.50 1.78 3.09 3.42 8.85
SKEW0.43 0.66 0.89 0.87 -0.15 0.52 2.30 1.19 1.46 0.54 0.23 0.14 0.37
MAX15.03 10.87 10.28 7.83 5.26 4.72 3.65 3.84 7.38 7.76 13.29 13.73 64.39
MIN0.41 0.66 1.90 1.11 0.04 0.18 0.00 0.00 0.00 0.25 0.81 0.10 26.73
YRS33 34 36 35 34 34 36 34 33 33 37 35 22