Bellingham Temperatures: Averages by Month





The numbers here tell you how hot and cold the weather usually is in Bellingham, 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 or 80 °F each month in Bellingham, 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 Bellingham, 2010 to 2019
High °F Low °F   High °C Low °C
47 34 January 8 1
48 35 February 9 1
53 38 March 12 3
57 42 April 14 6
64 47 May 18 8
68 52 June 20 11
73 55 July 23 13
74 55 August 24 13
68 51 September 20 10
60 44 October 15 7
51 38 November 11 3
45 34 December 7 1
59 44 Year 15 7
30-year temperature averages for Bellingham, 1991 to 2020
High °F Low °F   High °C Low °C
46 34 January 8 1
49 35 February 9 1
53 38 March 12 3
58 42 April 14 5
64 47 May 18 8
68 52 June 20 11
73 55 July 23 13
73 55 August 23 13
68 50 September 20 10
59 43 October 15 6
51 38 November 11 3
46 34 December 8 1
59 43 Year 15 6

Days of Hot Weather in Bellingham

Bellingham has mainly mild summers, averaging 11 days that reach into the 80s Fahrenheit. Highs of 90 °F (32 °C) or more are not normal here.

Number of days in Bellingham of at least 70 or 80 °F
  70 °F
21 °C
80 °F
27 °C
January 0 0
February 0 0
March 0 0
April 1 0
May 6 1
June 9 2
July 20 4
August 21 4
September 10 1
October 1 0
November 0 0
December 0 0
Year 67 11

How Often Bellingham Has Cold Temperatures

Bellingham averages 59 frosty nights a year that begin in October and linger until April or even May. The temperature doesn't normally drop as low as 10 °F (-12 °C) here.

On an average of four days annually the thermometer never rises above freezing. Days that chilly can arrive anytime from November to March.

Days per month on average in Bellingham when the minimum temperature drops to 32 or 20 °F or below
  20 °F
-8 °C
32 °F
0 °C
January 2 13
February 1 12
March 0 7
April 0 2
May 0 0
June 0 0
July 0 0
August 0 0
September 0 0
October 0 2
November 1 9
December 2 13
Year 5 59
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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