Forest Grove Weather Records

Forest Grove, Oregon weather averages and records from 1893–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Forest Grove, Oregon was 113 °F which occurred on June 29, 2021.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Forest Grove, Oregon was -12 °F which occurred on February 3, 1950.
Lowest Temperatures: All-Time By Year
Forest Grove Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 46.5 34.2 67 -11 7.6 0.6
February 50.8 33.5 77 -12 5.2 0.5
March 55.9 36.7 82 13 4.6 0.0
April 61.4 39.7 93 23 3.4 0.0
May 69.4 46.2 101 28 2.3 0.0
June 74.4 50.5 113 32 1.4 0.0
July 82.7 54.6 109 34 0.3 0.0
August 83.4 54.1 108 33 0.5 0.0
September 77.4 49.4 104 27 1.3 0.0
October 64.5 42.3 93 20 3.1 0.2
November 52.3 36.8 72 6 7.6 0.0
December 45.4 33.3 64 -4 8.5 1.2
Entire year 63.7 42.6 113 -12 46.9 2.4
More Forest Grove Weather Records
1893–2024
Highest daily low 75 °F July 22, 2006
Lowest daily high 13 °F January 12, 1909
Greatest daily range
(Difference of high and low)
58 °F August 18, 1977
Greatest difference in daily high
over two conscutive days
34 °F Jul 24–25, 1991
Most daily precipitation 6.1 inches January 12, 1912
Most monthly precipitation 20.8 inches February 1999
Most yearly precipitation 77.3 inches 1999
Most yearly days with precipitation 193 1968
Earliest snow in season October 28 1996
Latest snow in season April 17 1972
Most daily snow 17.2 inches January 3, 1895
Most monthly snow 58.8 inches January 1950
Most yearly snow 60.8 inches 1950
Most snow in a winter 60.8 inches 1949–1950
Greatest snow accumulation 22.0 inches December 10, 1919
Earliest freeze September 17 1965
Earliest day ≥ 80 °F March 26 1994
Earliest day ≥ 90 °F April 17 1897
Earliest day ≥ 100 °F May 28 1983
Latest freeze May 25 1920
Latest day ≥ 80 °F October 23 1901
Latest day ≥ 90 °F October 10 1991
Latest day ≥ 100 °F September 8 1981
Most days in a year < 0 °F 3 1909
Most days in a year < 32 °F 90 1985
Most days in a year ≥ 80 °F 105 1967
Most days in a year ≥ 90 °F 42 1967
Most days in a year ≥ 100 °F 9 1996
Most days in a year ≥ 110 °F 1 2021
Forest Grove Weather Streaks
Most consecutive days...
With precipitation 40 days Dec 16, 1898 – Jan 24, 1899
Without precipitation 73 days Jul 5 – Sep 15, 1969
With snow 8 days Jan 27 – Feb 3, 1893
High temperature at or
below freezing
15 days Jan 9–23, 1930
High temperature ≥ 80 °F 33 days Jul 6 – Aug 7, 1994
High temperature ≥ 90 °F 14 days Aug 8–21, 2004
High temperature ≥ 100 °F 6 days Aug 7–12, 1981
Plant Hardiness Zone
8B
Forest Grove is in plant hardiness zone 8B
based on average yearly minimum temperature from 1991–2020
Forest Grove Weather by Year
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Weather Station Details
Years Station Coordinates
1893–2024 Forest Grove location