FOREST GROVE, OR

Minimum of Minimum Temperature (Degrees Fahrenheit)

(352997)

File last updated on May 13, 2026
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
189312.00 22.00 25.00 29.00 34.00 35.00 43.00 -----z34.00u23.00 23.00 24.00 -----z
189419.00 11.00 24.00 28.00 28.00a42.00k-----z-----z-----z30.00b25.00 23.00a-----z
189521.00 27.00d19.00 27.00 29.00 -----z-----z-----z-----z25.00 22.00 27.00 -----z
189622.00a25.00 19.00 29.00 35.00 37.00 -----z-----z30.00a30.00 7.00 26.00 -----z
189719.00 26.00 16.00 32.00 34.00 37.00 -----z-----z30.00a27.00 28.00 23.00 -----z
189814.00 29.00 22.00 25.00 32.00 -----z-----z-----z-----z32.00 25.00 15.00 -----z
189920.00 -1.00 24.00a29.00 30.00 -----z-----z-----z-----z25.00b33.00 27.00 -----z
190023.00 19.00 29.00 26.00 34.00 40.00m-----z-----z-----z32.00 11.00 24.00a-----z
190121.00b21.00c23.00b29.00 35.00 -----z-----z-----z-----z38.00 29.00 23.00 -----z
19027.00 26.00b28.00a28.00 31.00d-----z-----z-----z-----z34.00 26.00 21.00 -----z
190322.00 19.00 22.00 23.00 32.00a38.00 39.00 39.00 30.00 24.00 28.00 24.00 19.00a
190423.00 25.00 27.00 30.00 32.00 37.00 35.00 38.00 30.00 33.00a32.00 24.00c23.00d
190520.00b11.00 25.00 29.00 33.00 40.00 43.00 35.00 37.00 24.00 23.00 22.00a11.00c
190627.00 23.00 19.00 28.00 31.00 38.00 42.00 41.00b29.00b25.00 21.00 22.00 19.00d
19074.00d24.00 23.00 28.00 31.00 -----z-----z-----z-----z-----z-----z-----z-----z
190826.00 18.00 26.00 27.00 31.00 -----z-----z38.00g27.00 28.00b26.00 22.00 -----z
1909-11.00 31.00 30.00 28.00 29.00 35.00 40.00a33.00p33.00m30.00 20.00 17.00 -----z
191012.00c20.00 26.00 26.00 36.00 -----z-----z-----z-----z31.00 28.00 26.00k-----z
19113.00a22.00 23.00 24.00 31.00 -----z40.00 42.00 33.00 25.00 20.00 23.00 -----z
191216.00 25.00 23.00 29.00 -----z-----z-----z-----z-----z-----z-----z-----z-----z
191318.00e21.00r22.00a27.00 36.00 42.00c43.00 -----z-----z-----z-----z-----z-----z
1914-----z-----z32.00h-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1915-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1916-----z-----z-----z-----z-----z34.00 42.00 44.00 36.00a27.00 19.00 9.00 -----z
191716.00 20.00a23.00 31.00 30.00 37.00 42.00 42.00 42.00 23.00 30.00 29.00 16.00a
191821.00 23.00 27.00 27.00 32.00 36.00 37.00 42.00 37.00 33.00 29.00 20.00 20.00
191918.00 27.00 30.00 30.00 32.00 36.00 39.00 42.00 33.00 22.00 19.00 -3.00c-3.00c
192021.00 23.00 25.00 30.00 30.00 36.00 41.00 36.00 40.00 29.00 24.00 30.00 21.00
192123.00 27.00 29.00 28.00a33.00 44.00 38.00 41.00 32.00 30.00 31.00 17.00 17.00a
192212.00 16.00 27.00 29.00 28.00 37.00 40.00 44.00 40.00 29.00 26.00 7.00 7.00
192317.00 15.00 23.00 32.00 31.00 38.00 45.00 43.00 36.00 29.00 30.00 17.00 15.00
19244.00 28.00 27.00 26.00 32.00 37.00 39.00 37.00 34.00 29.00 25.00 3.00 3.00
192526.00 30.00 28.00 31.00 35.00 39.00 42.00 40.00 38.00 30.00 24.00 25.00 24.00
192621.00 28.00 29.00 32.00 33.00 36.00 40.00 42.00 30.00 30.00 30.00 13.00 13.00
19273.00 23.00 28.00 26.00 35.00 38.00 42.00 40.00 36.00 27.00 28.00 14.00a3.00a
192814.00 27.00 27.00 29.00 33.00 39.00a41.00 41.00 32.00 27.00 26.00 19.00 14.00a
192911.00 4.00 27.00 28.00 33.00 35.00 41.00 39.00 32.00 27.00 22.00 27.00 4.00
1930-8.00 25.00 25.00 32.00 29.00 35.00 40.00 43.00 33.00 29.00 23.00 19.00 -8.00
193125.00 27.00 28.00a28.00 32.00 40.00 42.00 40.00 36.00 32.00 19.00 19.00 19.00a
193222.00 13.00 27.00 29.00 33.00 35.00 37.00 41.00a36.00 30.00 28.00 5.00 5.00a
193320.00 9.00 29.00 27.00 35.00 38.00 42.00 43.00 37.00 30.00 25.00 29.00 9.00
193429.00 28.00 30.00 30.00 34.00 37.00 43.00 44.00a31.00 33.00 31.00 24.00 24.00a
193512.00 24.00 27.00 26.00 31.00 34.00 38.00 39.00 41.00 24.00 14.00 19.00 12.00
193620.00a14.00 25.00 27.00 35.00 42.00 45.00 41.00 34.00a26.00 16.00 24.00 14.00b
1937-0.00 19.00 27.00 30.00 33.00 40.00 42.00 38.00 34.00 35.00 29.00 24.00 -0.00
193824.00 26.00 26.00 28.00 31.00 37.00 42.00 38.00 44.00 30.00 25.00 21.00a21.00a
193927.00 22.00 27.00 30.00 34.00 37.00 41.00 39.00 40.00a30.00 30.00 24.00a22.00b
194025.00 30.00 31.00 33.00a34.00 37.00 41.00 42.00 36.00 32.00 24.00 18.00 18.00a
194121.00 27.00 25.00 30.00 34.00 39.00 44.00 44.00 38.00 36.00 25.00 26.00 21.00
194213.00 24.00 28.00 30.00 32.00 38.00 43.00 41.00 40.00 28.00 28.00 29.00 13.00
19435.00 26.00 23.00 30.00 33.00 39.00 41.00 42.00 39.00 31.00 27.00 22.00 5.00
194422.00 25.00 25.00 32.00 33.00 38.00 41.00 42.00 39.00 37.00 25.00 20.00 20.00
194521.00 26.00 26.00 28.00 39.00 37.00 40.00 40.00 34.00 28.00 27.00 20.00 20.00
194624.00 28.00 29.00 28.00 36.00 41.00 43.00 42.00 33.00 27.00 24.00 19.00a19.00a
194714.00 22.00 30.00 30.00 36.00 38.00 44.00 38.00 34.00 37.00 26.00 28.00 14.00
194822.00 18.00 26.00 29.00 32.00 42.00 39.00 42.00 37.00 30.00 26.00 16.00 16.00
19491.00 18.00 26.00 28.00 31.00 37.00 40.00 40.00 34.00 24.00 28.00c21.00 1.00c
19504.00a-12.00a27.00 29.00 33.00 37.00 41.00 42.00 30.00 29.00 25.00 31.00 -12.00b
195112.00 23.00 21.00 26.00 34.00 41.00 43.00a40.00 34.00 29.00 27.00 20.00 12.00a
195215.00 27.00a26.00 28.00 29.00a41.00a42.00 40.00 35.00 31.00 13.00 22.00 13.00c
195327.00 25.00 27.00 26.00 33.00 38.00 42.00 42.00 35.00a29.00 26.00 28.00 25.00a
19545.00 25.00 23.00 28.00 28.00 36.00 38.00 39.00 33.00 26.00 28.00 24.00b5.00b
195524.00 22.00a22.00 28.00 31.00 36.00 34.00 37.00 33.00 32.00 7.00 19.00 7.00a
19564.00 2.00 16.00 28.00 33.00 38.00 40.00 42.00 35.00 30.00 22.00 17.00 2.00
19575.00 24.00 29.00 31.00a40.00 39.00a40.00 36.00 34.00 31.00a23.00 29.00 5.00c
195825.00 28.00 26.00 30.00 31.00 40.00 43.00 42.00 33.00 31.00 19.00 26.00 19.00
195914.00 24.00 22.00 32.00 34.00 39.00 42.00 42.00 40.00 29.00 21.00 22.00a14.00a
196020.00 17.00 19.00 31.00 35.00 40.00 40.00 42.00 37.00 31.00 28.00 22.00 17.00
196123.00 31.00 31.00 32.00 37.00 39.00 45.00 44.00 33.00 28.00 20.00 18.00 18.00
19627.00 15.00 25.00 32.00 32.00 37.00 39.00 40.00 41.00 35.00 30.00 21.00 7.00
196310.00 32.00 27.00 29.00 33.00 40.00 44.00 45.00 42.00 31.00 24.00 22.00 10.00
196429.00 23.00 29.00 25.00 28.00 39.00 43.00 37.00 38.00 29.00 22.00 7.00 7.00
196527.00 27.00 25.00 25.00 30.00 34.00 44.00 40.00 30.00 34.00 27.00 17.00 17.00
196623.00 25.00 27.00 29.00 33.00 38.00 45.00 42.00 44.00 30.00 27.00 29.00 23.00
196731.00 25.00 25.00 30.00 35.00 45.00 46.00 47.00 38.00 33.00 28.00 15.00 15.00
196822.00 23.00 26.00 26.00 34.00 37.00 44.00 43.00 41.00 30.00 28.00 8.00 8.00
196910.00 25.00 24.00 29.00 33.00a42.00 43.00 41.00 39.00 27.00 21.00 20.00 10.00a
197022.00 28.00 27.00 28.00 32.00 39.00 41.00 41.00 33.00 26.00 26.00 25.00 22.00
197120.00 20.00 13.00 28.00 36.00 38.00 42.00 43.00 34.00 23.00 24.00 23.00 13.00
197212.00 17.00 26.00 27.00 33.00 42.00 45.00 45.00 32.00 24.00 28.00 -4.00 -4.00
197318.00 24.00 29.00 31.00 34.00 37.00 42.00 39.00 38.00 32.00 23.00 28.00 18.00
19747.00 27.00 24.00 32.00 31.00 39.00 44.00 43.00 36.00 30.00 29.00 24.00 7.00
197522.00 24.00 26.00 27.00 32.00a39.00 43.00 43.00 40.00 34.00 23.00 24.00 22.00a
197624.00 17.00 22.00 31.00 34.00 34.00a41.00a42.00a38.00 27.00 22.00 22.00 17.00c
197714.00 24.00 28.00 32.00 33.00a35.00 39.00 44.00a35.00 32.00 18.00 22.00a14.00c
197827.00 25.00 28.00 30.00 31.00 44.00 45.00 46.00 39.00 27.00 16.00 10.00 10.00
1979-1.00 7.00 32.00 32.00 37.00 38.00 42.00 45.00a40.00 36.00 25.00 27.00a-1.00b
19809.00 24.00 30.00a31.00a37.00 42.00a47.00a41.00 40.00 29.00 27.00 23.00 9.00d
198126.00 24.00 27.00 30.00 35.00d41.00 40.00 44.00 43.00 33.00 25.00 28.00 24.00d
19829.00 16.00 28.00a29.00 33.00a40.00 44.00a43.00b37.00a31.00b23.00b20.00a9.00k
198324.00c27.00 32.00a28.00 37.00d42.00 43.00 43.00 35.00 31.00b26.00a8.00c8.00n
198417.00c27.00d28.00a29.00 33.00d40.00 42.00 39.00 36.00b30.00b25.00b14.00a14.00s
198520.00a12.00i26.00e32.00c30.00b40.00a47.00a42.00a34.00e26.00d6.00c18.00 -----z
198629.00e24.00a32.00a30.00a34.00b43.00a43.00b44.00 37.00b35.00e27.00c24.00e-----z
198722.00d-----z29.00b29.00e-----z-----z46.00b45.00b37.00c-----z25.00d24.00a-----z
198817.00d19.00b26.00 28.00d33.00e38.00c45.00 45.00a34.00b33.00d28.00e21.00b-----z
198925.00c5.00b25.00b33.00 38.00 42.00c42.00a45.00a38.00b29.00a29.00a25.00b5.00r
199025.00a16.00d28.00a34.00 33.00a42.00a45.00a44.00a40.00 32.00 30.00c3.00 3.00m
199118.00e31.00a30.00c30.00 32.00 36.00 44.00 42.00 41.00 29.00 29.00 27.00 18.00i
199223.00e26.00d29.00b29.00d33.00c46.00c48.00e46.00e38.00f29.00g27.00g24.00f-----z
19938.00b19.00 29.00 35.00e38.00b42.00b43.00 42.00a35.00 34.00b13.00c21.00a8.00r
199423.00a18.00a29.00a33.00c36.00 40.00a43.00 47.00 42.00 30.00a25.00 20.00c18.00k
199525.00 12.00c26.00b31.00 40.00 41.00a44.00c40.00 44.00b31.00d26.00d20.00 12.00s
199615.00 7.00c22.00a32.00 32.00a40.00 43.00 44.00a38.00 28.00b22.00a20.00a7.00j
199718.00c23.00b30.00 28.00 35.00 43.00 47.00 51.00 44.00 31.00 30.00b27.00b18.00i
199825.00 28.00 28.00 32.00 40.00 46.00 52.00a46.00 39.00 32.00 35.00 8.00 8.00a
199927.00 30.00b26.00c29.00b35.00e32.00e41.00g45.00c33.00c33.00e30.00d22.00b-----z
200023.00d26.00g28.00d31.00h32.00a43.00 41.00b42.00a34.00c33.00b19.00a24.00d-----z
200123.00d23.00 28.00a27.00b35.00c39.00a39.00d45.00b38.00f33.00c28.00b25.00d-----z
200225.00a25.00b27.00f33.00e33.00d41.00 43.00a46.00c35.00c20.00d26.00d24.00g-----z
200322.00f12.00a29.00c31.00d30.00c42.00 45.00b46.00c40.00a25.00c21.00e13.00e-----z
200411.00a26.00b31.00d31.00a41.00a42.00b50.00a51.00b40.00c36.00 25.00a28.00 11.00r
200521.00b23.00 30.00b32.00 41.00 41.00a48.00 45.00 35.00a34.00a25.00 16.00c16.00j
200629.00 19.00b27.00a29.00c33.00b44.00a46.00a46.00a38.00c22.00c24.00g22.00g-----z
200716.00d21.00c28.00j27.00e34.00 40.00c49.00a46.00 37.00a28.00g23.00d26.00d-----z
200818.00d26.00g26.00f25.00e33.00c-----z44.00 42.00 38.00 32.00 28.00 10.00 -----z
200921.00 24.00a25.00 26.00 36.00 44.00 50.00 45.00 41.00 29.00 30.00 8.00 8.00a
201032.00 24.00b33.00a29.00 37.00 42.00 45.00 43.00 43.00 33.00 14.00 21.00 14.00c
201119.00 16.00 28.00 29.00 33.00 37.00 44.00 48.00 40.00 30.00 24.00 20.00 16.00
201222.00e27.00 24.00 28.00 33.00 38.00 43.00 42.00 42.00 35.00b27.00 35.00y-----z
201320.00 29.00 28.00 34.00 33.00 43.00 47.00 49.00 39.00 29.00 20.00 8.00 8.00
201420.00 18.00 29.00 33.00 36.00 44.00 50.00 46.00 45.00 43.00a18.00 19.00 18.00a
201520.00 28.00a26.00 31.00 39.00 45.00 48.00 48.00 40.00 39.00 18.00 27.00 18.00a
201620.00 30.00 30.00 34.00 41.00 42.00 48.00 48.00 39.00 35.00 34.00 18.00 18.00
201710.00 27.00 29.00 33.00 37.00 42.00 47.00 47.00 42.00 31.00 31.00 21.00 10.00
201826.00 19.00 26.00a29.00 39.00a39.00 44.00 46.00 41.00 35.00 27.00 22.00 19.00b
201924.00 20.00 19.00 32.00 36.00 43.00 47.00 48.00 40.00a24.00 19.00 19.00 19.00a
202028.00 26.00 26.00 29.00 36.00t45.00a48.00 46.00 46.00 26.00 22.00 25.00 22.00u
202126.00a23.00 26.00 29.00 35.00 42.00 49.00 42.00 40.00 32.00 28.00 24.00 23.00a
202221.00 20.00 25.00 29.00 32.00 43.00 48.00 50.00 43.00 39.00 21.00 19.00 19.00
202318.00 12.00 25.00 31.00a40.00 40.00 51.00 46.00 44.00g27.00 22.00 33.00r-----z
202410.00 28.00 29.00 34.00 36.00 41.00 49.00 45.00 41.00 34.00 29.00 23.00 10.00
202522.00 19.00 30.00 34.00 36.00 41.00 48.00 52.00 44.00 35.00 30.00 26.00 19.00
202619.00 29.00 29.00 32.00 -----z-----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN17.96 21.85 26.23 29.38 33.64 39.33 43.10 42.77 36.99 30.09 24.44 20.28 12.99
S.D.8.10 7.03 3.40 2.37 2.87 2.93 3.36 3.27 4.04 3.95 5.27 6.77 7.85
SKEW-1.02 -1.73 -1.03 0.01 0.52 0.10 0.24 0.27 -0.06 0.13 -1.16 -1.28 -0.80
MAX32.00 32.00 33.00 35.00 41.00 46.00 52.00 52.00 46.00 43.00 35.00 31.00 25.00
MIN-11.00 -12.00 13.00 23.00 28.00 32.00 34.00 35.00 27.00 20.00 6.00 -4.00 -12.00
YRS130 126 128 130 127 117 117 115 115 125 126 122 84