Annual mean 10°C · wettest around December · prevailing wind S
Warmest
21.9 °C
Coldest
4.7 °C
Wettest
37%
Windiest
4.2 m/s
Prevailing
S
3.3 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Bellingham over the whole year is 10°C. July is the hottest month, with highs of about 21°C; February is the coldest, with lows of about 3°C. The rainy (wet) season in Bellingham runs from October to April, peaking in December with a 36% chance of rain on a given day. The dry season is May to September; July is the driest month, at 17%. Winds in Bellingham are highest in January, averaging 2.9 m/s (10 km/h), and lightest in September, at 2.0 m/s (7 km/h). The prevailing wind is from the S. The clearest skies in Bellingham come in July, when the sky is typically 37% covered; December is the cloudiest month, at 73%.
Month by month Bellingham climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
6°C
3°C
2°C
35%
71%
2.9 m/s
0
0
18
February
6°C
3°C
2°C
34%
72%
2.9 m/s
0
0
17
March
9°C
5°C
5°C
31%
66%
2.8 m/s
2
0
38
April
12°C
7°C
9°C
28%
60%
2.8 m/s
9
0
63
May
16°C
10°C
13°C
24%
55%
2.4 m/s
39
2
85
June
18°C
13°C
17°C
22%
55%
2.3 m/s
63
6
84
July
21°C
14°C
20°C
17%
37%
2.3 m/s
88
16
75
August
21°C
14°C
21°C
18%
41%
2.1 m/s
86
19
70
September
18°C
12°C
17°C
24%
54%
2.0 m/s
70
6
82
October
13°C
8°C
11°C
31%
63%
2.3 m/s
19
0
74
November
9°C
6°C
6°C
36%
70%
2.8 m/s
1
0
39
December
6°C
3°C
2°C
36%
73%
2.7 m/s
0
0
18
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Bellingham weather by season
Year round, Bellingham has days of about 6°C at their warmest in December, its coolest month, and 21°C in July, its warmest; the coolest hours of the day run from 3°C to 14°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around December and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Bellingham weather in winterDecember to February
High 6°CLow 3°CRain 35%
Winter in Bellingham has typical daily highs of about 6°C and lows of about 3°C, with a 35% chance of rain on a given day.
Bellingham weather in springMarch to May
High 12°CLow 7°CRain 28%
Spring in Bellingham has typical daily highs of about 12°C and lows of about 7°C, with a 28% chance of rain on a given day.
Bellingham weather in summerJune to August
High 20°CLow 14°CRain 19%
Summer in Bellingham has typical daily highs of about 20°C and lows of about 14°C, with a 19% chance of rain on a given day.
Bellingham weather in autumnSeptember to November
High 13°CLow 9°CRain 30%
Autumn in Bellingham has typical daily highs of about 13°C and lows of about 9°C, with a 30% chance of rain on a given day.
When is the rainy season in Bellingham?
The rainy (wet) season in Bellingham runs from October to April, peaking in December with a 36% chance of rain on a given day. The dry season is May to September; July is the driest month, at 17%.
What time of year is Bellingham windiest?
Winds in Bellingham are highest in January, averaging 2.9 m/s (10 km/h), and lightest in September, at 2.0 m/s (7 km/h). The prevailing wind is from the S.
What is the average temperature in Bellingham year round?
The average temperature in Bellingham over the whole year is 10°C. July is the hottest month, with highs of about 21°C; February is the coldest, with lows of about 3°C.