Winthrop Weather Records

Winthrop, Washington weather averages and records from 1906–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Winthrop, Washington was 109 °F which occurred on June 30, 2021.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Winthrop, Washington was -48 °F which occurred on December 30, 1968.
Lowest Temperatures: All-Time By Year
Winthrop Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧 Snow ❄️
January 30.4 15.9 57 -32 2.2 17.0
February 38.9 18.6 62 -28 1.3 8.8
March 50.5 26.0 79 -11 1.2 3.2
April 61.7 32.7 89 13 0.8 0.1
May 71.6 40.3 100 20 1.1 0.0
June 77.2 46.5 109 28 1.1 0.0
July 86.3 51.4 106 31 0.7 0.0
August 86.1 49.8 105 28 0.4 0.0
September 77.5 41.7 100 18 0.4 0.0
October 61.6 32.5 88 5 1.4 1.1
November 41.7 25.0 68 -17 2.0 8.3
December 29.7 16.0 70 -48 2.5 22.1
Entire year 59.5 33.0 109 -48 15.0 60.9
More Winthrop Weather Records
1906–2024
Highest daily low 78 °F July 16, 1906
Lowest daily high -21 °F December 30, 1968
Greatest daily range
(Difference of high and low)
66 °F September 28, 1919
Greatest difference in daily high
over two conscutive days
35 °F Aug 31 – Sep 1, 1971
Most daily precipitation 2.6 inches July 29, 1958
Most monthly precipitation 8.2 inches December 1933
Most yearly precipitation 24.1 inches 1948
Most yearly days with precipitation 135 2016
Earliest snow in season October 3 1927
Latest snow in season April 27 1962
Most daily snow 52.0 inches January 21, 1935
Most monthly snow 76.8 inches December 1996
Most yearly snow 146.5 inches 1955
Most snow in a winter 165.6 inches 1915–1916
Greatest snow accumulation 71.0 inches January 21, 1935
Earliest freeze August 24 1910
Earliest day ≥ 80 °F April 2 1987
Earliest day ≥ 90 °F May 5 1966
Earliest day ≥ 100 °F May 31 1986
Latest freeze July 8 1981
Latest day ≥ 80 °F October 21 1942
Latest day ≥ 90 °F September 28 1994
Latest day ≥ 100 °F September 4 1988
Most days in a year < 0 °F 38 1922
Most days in a year < 32 °F 211 1965
Most days in a year ≥ 80 °F 110 2023
Most days in a year ≥ 90 °F 59 1958
Most days in a year ≥ 100 °F 9 1977
Winthrop Weather Streaks
Most consecutive days...
With precipitation 17 days Oct 23 – Nov 8, 2012
Without precipitation 79 days Aug 13 – Oct 30, 1974
With snow 13 days Feb 9–21, 2014
High temperature at or
below freezing
52 days Dec 27, 1928 – Feb 16, 1929
High temperature ≥ 80 °F 66 days Jun 17 – Aug 21, 2021
High temperature ≥ 90 °F 22 days Jul 1–22, 1906
High temperature ≥ 100 °F 7 days Aug 8–14, 1981
Plant Hardiness Zone
5B
Winthrop is in plant hardiness zone 5B
based on average yearly minimum temperature from 1991–2020
Winthrop Weather by Year
More Winthrop Weather
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Weather Station Details
Years Station Coordinates
1906–2024 Winthrop 1 WSW location