Spokane Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Spokane, Washington during each month of the year.

The average high and low temperatures are listed below monthly and annually for the city, in both degrees Fahrenheit and Celsius.

Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.

To find out how often it rises over 70, 80 or 90 °F each month in Spokane, scroll down farther. There are also monthly and yearly counts of days with cold weather.

The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.

10-year temperature averages for Spokane, 2010 to 2019
High °F Low °F   High °C Low °C
35 24 January 2 -4
39 25 February 4 -4
49 32 March 9 0
57 37 April 14 3
68 46 May 20 8
74 52 June 24 11
85 58 July 29 15
85 58 August 29 15
73 50 September 23 10
58 39 October 14 4
43 30 November 6 -1
34 24 December 1 -4
58 40 Year 15 4
30-year temperature averages for Spokane, 1991 to 2020
High °F Low °F   High °C Low °C
35 25 January 1 -4
40 26 February 4 -3
49 32 March 9 0
57 37 April 14 3
67 45 May 20 7
74 51 June 23 10
84 58 July 29 14
84 57 August 29 14
74 49 September 23 9
58 38 October 14 3
42 30 November 6 -1
34 24 December 1 -4
58 39 Year 14 4

Days of Hot Weather in Spokane

Spokane's hot weather appears from May to September, when temperatures can peak in the 80s or 90s Fahrenheit. The city averages 21 days a year with 90-degree temperatures. Once a year on average, a day heats up into the 100s Fahrenheit (38 °C).

Number of days in Spokane of at least 70, 80 or 90 °F
  70 °F
21 °C
80 °F
27 °C
90 °F
32 °C
January 0 0 0
February 0 0 0
March 0 0 0
April 3 0 0
May 12 4 0
June 20 8 2
July 30 22 9
August 29 22 8
September 20 9 1
October 3 0 0
November 0 0 0
December 0 0 0
Year 116 65 21

How Often Spokane Has Cold Temperatures

Spokane averages 132 frosty nights a year, beginning in September and lingering until May. Typically on two of those nights, the temperature drops to 0 °F (-18 °C) or below.

On an average of 34 days annually the thermometer never rises above freezing. Days that chilly can occur from October to March.

Days per month on average in Spokane when the minimum temperature drops to 32, 20 or 10 °F or below
  10 °F
-12 °C
20 °F
-8 °C
32 °F
0 °C
January 3 9 26
February 2 6 23
March 0 2 19
April 0 0 8
May 0 0 2
June 0 0 0
July 0 0 0
August 0 0 0
September 0 0 0
October 0 1 8
November 1 4 19
December 3 9 27
Year 9 31 132
References

Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

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