HILLSBORO, OR

Minimum of Minimum Temperature (Degrees Fahrenheit)

(353908)

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
1929-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z22.00f25.00 -----z
1930-14.00a26.00a26.00a31.00 30.00 33.00 36.00a30.00 31.00 25.00 22.00c23.00d-14.00k
193124.00e22.00 27.00 29.00 33.00 39.00a42.00a40.00 37.00 31.00 19.00 20.00b19.00i
193222.00 16.00 27.00 30.00 34.00 35.00 37.00 41.00 37.00b31.00e28.00c5.00b5.00l
193321.00a11.00a29.00 20.00 35.00d37.00 40.00 41.00 35.00 28.00c23.00g27.00b11.00r
193429.00n28.00c30.00b36.00b30.00a30.00 42.00 43.00 29.00 30.00 31.00 24.00 24.00v
193510.00 24.00a26.00 28.00 26.00 31.00 37.00 37.00 39.00 24.00 13.00 20.00 10.00a
193620.00a14.00 27.00 27.00a36.00 45.00 43.00 45.00 35.00 28.00 15.00 26.00a14.00c
19371.00 20.00a29.00 32.00 32.00 40.00a41.00 38.00 33.00 36.00c30.00 25.00 1.00e
193824.00 27.00 28.00a30.00 33.00 40.00 41.00 38.00a42.00 30.00 25.00 18.00a18.00c
193927.00 22.00d26.00 29.00 32.00 35.00 40.00 40.00 39.00 27.00 29.00c23.00a22.00h
194025.00 28.00 32.00 32.00 37.00 38.00 40.00 41.00 35.00a33.00 25.00a18.00 18.00b
194123.00a26.00 25.00 31.00 34.00 43.00a40.00 46.00 36.00 35.00 23.00 24.00 23.00b
194212.00 24.00 26.00 30.00 30.00 39.00 43.00 41.00 37.00 28.00 26.00 28.00 12.00
1943-2.00 27.00a21.00 29.00 34.00 41.00 41.00 41.00 36.00 31.00 25.00 21.00 -2.00a
194422.00 23.00b24.00 29.00 31.00 37.00 38.00 40.00b37.00 35.00 22.00 18.00 18.00d
194520.00 25.00 25.00 27.00 38.00 36.00 40.00 38.00 33.00 28.00 25.00 18.00 18.00
194624.00 26.00 28.00 28.00 35.00 41.00 42.00 40.00 36.00 25.00 22.00 18.00 18.00
194716.00 23.00 27.00 30.00 32.00 39.00 44.00 39.00 33.00 36.00 24.00 26.00 16.00
194818.00 20.00 26.00 28.00 32.00 43.00 39.00a41.00 36.00 26.00a25.00a17.00a17.00d
19493.00a19.00 27.00 28.00a31.00 38.00a40.00 41.00a36.00a24.00 28.00 21.00 3.00e
1950-10.00a-9.00 26.00b28.00 32.00a41.00 41.00a40.00 33.00 30.00 25.00 34.00a-10.00f
195112.00 24.00 23.00 27.00a32.00 40.00 43.00 38.00 36.00 30.00a29.00b20.00 12.00d
195217.00 28.00 26.00 29.00 30.00 40.00b44.00a42.00a36.00b33.00a15.00a25.00a15.00i
195328.00a26.00 28.00b28.00 35.00a39.00 45.00 46.00b38.00 30.00 28.00 28.00b26.00h
195410.00 26.00 24.00d29.00a28.00 38.00 40.00a41.00b35.00 27.00a30.00 25.00 10.00i
195525.00 22.00 20.00a30.00 31.00 38.00 38.00 39.00 35.00 34.00 8.00 20.00 8.00a
19569.00 7.00 22.00 34.00 35.00 41.00 43.00 44.00 40.00 33.00b24.00 21.00c7.00e
19575.00 23.00 31.00 32.00 43.00 43.00 44.00 42.00a38.00 34.00 26.00 28.00 5.00a
195826.00a28.00 28.00 33.00 34.00 44.00 50.00 46.00 36.00 32.00 22.00c28.00c22.00g
195914.00a25.00 30.00 32.00a32.00 40.00 42.00 40.00 40.00 28.00a20.00a22.00a14.00e
196020.00 18.00 18.00 31.00 32.00 41.00 40.00 43.00 38.00 32.00a27.00 22.00 18.00a
196122.00 32.00b32.00b32.00 40.00 39.00 46.00 47.00 33.00 25.00 22.00 19.00a19.00e
196210.00 17.00a26.00 30.00 32.00 39.00 39.00 42.00 42.00b34.00 30.00 21.00a10.00d
19639.00 31.00 26.00b30.00a34.00a40.00 43.00 44.00 42.00a29.00 25.00 23.00 9.00e
196430.00a23.00 29.00 25.00 30.00 39.00 42.00 38.00 37.00 30.00a21.00a8.00 8.00c
196529.00 29.00 24.00a25.00 30.00 34.00 40.00 37.00 29.00 33.00 27.00 16.00 16.00a
196627.00a25.00 27.00 30.00 32.00 36.00 44.00 41.00 40.00 28.00 27.00 30.00 25.00a
196731.00 26.00 25.00a30.00 34.00 43.00 45.00 46.00 39.00a31.00a26.00 21.00 21.00c
196822.00 24.00 27.00 26.00 32.00 38.00 44.00 42.00 40.00 31.00 29.00 8.00 8.00
196915.00 26.00 25.00 29.00 33.00a49.00 42.00 39.00 35.00 27.00 21.00 21.00 15.00a
197025.00 31.00 29.00 29.00 32.00 37.00 40.00 41.00 31.00 27.00 27.00 26.00 25.00
197122.00 22.00 20.00 31.00 36.00 38.00 42.00 44.00 34.00 24.00 25.00 25.00 20.00
197215.00a19.00 29.00 28.00 34.00 42.00 42.00 44.00 31.00 21.00 27.00 -2.00 -2.00a
197319.00a24.00a29.00 30.00 34.00a37.00 44.00 39.00 37.00a31.00 25.00a30.00 19.00e
197410.00 29.00 26.00 32.00 32.00 40.00 45.00 43.00 37.00 31.00 29.00 26.00 10.00
197524.00 26.00 29.00 28.00 30.00a38.00 45.00 44.00 41.00 36.00 26.00 25.00 24.00a
197626.00 20.00a25.00 31.00 34.00 38.00 40.00 45.00 39.00 29.00 21.00 21.00 20.00a
197713.00f24.00 28.00 28.00 33.00 37.00 41.00 49.00 41.00 35.00 24.00 29.00 13.00f
197824.00 27.00 28.00 30.00 31.00a44.00a45.00 46.00 38.00 28.00 17.00 14.00 14.00b
19799.00 8.00 32.00 33.00 34.00 37.00 41.00a41.00 39.00a36.00 26.00 29.00 8.00b
198010.00 26.00 30.00 30.00 36.00 39.00 46.00 38.00 38.00 30.00a28.00 23.00 10.00a
198127.00 26.00 29.00 29.00 35.00 41.00 39.00 42.00 41.00 31.00 27.00 29.00 26.00
198212.00 18.00 29.00 30.00a33.00a42.00a42.00 43.00a38.00 31.00d25.00a23.00 12.00i
198323.00 29.00a34.00a30.00 37.00 44.00 44.00c44.00a33.00 31.00 30.00 10.00 10.00f
198420.00 29.00a30.00e30.00a35.00c42.00 43.00c40.00a36.00a31.00 28.00a15.00a15.00q
198521.00 14.00 25.00c31.00a29.00b41.00 46.00 43.00a35.00 28.00 9.00 19.00 9.00g
198630.00 26.00 33.00 30.00 34.00 43.00 44.00 44.00 38.00 34.00 28.00 25.00 25.00
198723.00 26.00 31.00 32.00 37.00 41.00a46.00 44.00 38.00 33.00 26.00 22.00 22.00a
198821.00 21.00a27.00 32.00 33.00a39.00a48.00 44.00 36.00 34.00b29.00 23.00c21.00h
198927.00a8.00a24.00 35.00e39.00 44.00 47.00 47.00 38.00 30.00 29.00 26.00 8.00g
199027.00 20.00 29.00 34.00 34.00a45.00 46.00a44.00 46.00 33.00 30.00 6.00a6.00c
199119.00 31.00 30.00 33.00 35.00 38.00 47.00 45.00 41.00 28.00a28.00a25.00a19.00c
199226.00a31.00 33.00 33.00b38.00a44.00b52.00b44.00 39.00 31.00 29.00 23.00 23.00h
199313.00 22.00 24.00b36.00 39.00a44.00 44.00a43.00 37.00a37.00 17.00a24.00 13.00f
199426.00 22.00 30.00 37.00b38.00 42.00a45.00 48.00 44.00a33.00 26.00a24.00a22.00f
199528.00 18.00 28.00 32.00 41.00 44.00d48.00 45.00 44.00 27.00a26.00 25.00 18.00e
199614.00 13.00 27.00 36.00 36.00b44.00 47.00 47.00 41.00 32.00 28.00 27.00a13.00c
199722.00 29.00a31.00a31.00 38.00 47.00b49.00a53.00 46.00a36.00 36.00 30.00 22.00f
199826.00 32.00a31.00 38.00a46.00a51.00a57.00a51.00 47.00 38.00 39.00 10.00 10.00e
199930.00a33.00 32.00 33.00 39.00b42.00a48.00q-----z-----z37.00s34.00a28.00 -----z
200028.00a28.00d32.00c30.00b39.00f-----z-----z-----z-----z-----z-----z-----z-----z
2001-----z-----z-----z-----z22.00c38.00c40.00a46.00 38.00 34.00a30.00h25.00n-----z
200225.00 26.00 24.00a36.00f35.00 44.00b46.00k48.00q43.00p25.00b21.00a27.00 -----z
200329.00 26.00 30.00 36.00a33.00 -----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN18.99 23.10 27.41 30.44 33.81 40.13 42.94 42.41 37.37 30.52 25.13 21.83 14.89
S.D.9.28 6.86 3.23 2.97 3.68 3.69 3.61 3.61 3.72 3.62 5.34 6.52 7.08
SKEW-1.34 -1.87 -0.43 -0.07 0.30 0.04 1.00 -0.02 0.22 -0.21 -0.85 -1.31 -0.48
MAX31.00 33.00 34.00 38.00 46.00 51.00 57.00 53.00 47.00 38.00 39.00 34.00 26.00
MIN-14.00 -9.00 18.00 20.00 22.00 30.00 36.00 30.00 29.00 21.00 8.00 -2.00 -2.00
YRS71 73 73 72 73 72 70 70 70 71 70 72 38