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 1981 to 2010 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, 1981 to 2010
High °F Low °F   High °C Low °C
46 33 January 8 0
48 33 February 9 1
52 36 March 11 2
57 40 April 14 4
62 46 May 17 8
67 50 June 19 10
71 54 July 22 12
72 53 August 22 12
67 48 September 19 9
58 42 October 14 5
50 37 November 10 3
44 32 December 7 0
58 42 Year 14 6

Days of Hot Weather in Bellingham

Bellingham has mainly mild summers, averaging just eight days that reach the 80s Fahrenheit. Only once every few years does the city heat up to 90 °F (32 °C).

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 4 0
June 8 2
July 17 3
August 19 3
September 8 1
October 1 0
November 0 0
December 0 0
Year 57 8

How Often Bellingham Has Cold Temperatures

Bellingham averages 60 frosty nights a year that begin in October and linger until April or May. Typically on one of those nights, the temperature drops to 10 °F (-12 °C) or less.

On an average of five days annually the thermometer never rises above freezing. Days that chilly can occur from November to February.

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 8
December 2 15
Year 6 60
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. 1981-2010 U.S. Climate Normals. (Data Access. FTP.)

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