ClimateAverages

Bellingham Climate

Washington, United States of America · population 85,146 · 572 weather stations within 200 km · records 1837 to 2025

Average annual daytime high
14.3°C
Warmest month · July
22.8°C
Typical daytime high
Coldest month · January
-0.8°C
Typical overnight low

Bellingham has an average annual daytime high of 14.3°C, based on the 1951 to 1980 baseline. Its warmest month is July, when highs typically reach 22.8°C, and its coldest is January, with overnight lows near -0.8°C.

Month by month averages

MonthAvg highAvg low
January5.3°C-0.8°CColdest
February8.4°C1.0°C
March10.4°C1.7°C
April14.1°C3.9°C
May17.6°C7.1°C
June19.8°C9.9°C
July22.8°C11.4°CWarmest
August22.6°C11.6°C
September20.0°C9.4°C
October14.6°C6.0°C
November9.3°C2.8°C
December6.5°C0.9°C

Temperature range across the year

-3°4°11°18°25°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2014
+2.2°C vs. 1951–1980
Coldest year on record
1858
-1.7°C vs. 1951–1980

These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.

Is Bellingham getting hotter?

Since 1900, Bellingham's average temperature has risen by +1.4°C. Compared to the earliest station records that begin in 1837, warming totals +1.7°C.

9.2°9.7°10.2°10.7°11.2°1951–1980 baseline190019251950197520002025

20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.

Best time to visit
May to September

Daytime highs sit within a comfortable 15°C to 26°C range.

FAQ

What is the average temperature in Bellingham?

Bellingham's average annual daytime high is 14.3°C, based on the 1951 to 1980 baseline period. The warmest month is July, with highs averaging 22.8°C, and the coldest is January, with lows averaging -0.8°C.

What is the warmest month in Bellingham?

July is the warmest month in Bellingham, with typical daytime highs of 22.8°C.

What is the hottest year on record for Bellingham?

2014 is the hottest year on record for Bellingham, running +2.2°C above the 1951 to 1980 baseline.

Is Bellingham getting hotter?

Yes. Since 1900, Bellingham has warmed by roughly +1.4°C.

When is the best time to visit Bellingham?

May to September typically offers the most comfortable daytime highs, in the 15°C to 26°C range.

Nearby cities

Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.