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As of 18:42 PST

Weather in Semiahmoo, WA

49°Current weather

Semiahmoo, Sunday, 8 November, 18:42

Overcast. Feels like 49°. High 55°, low 48°.

Pressure30.12 inHg
Wind1.1 mph N
Humidity87%
Visibility6.2 mi
Dew point45°
Mon, 0957° / 44°0.26Rain
57 °Rain

Semiahmoo, Monday, 9 November

Rain. High 57°, low 44°.

Pressure29.94 inHg
Wind8 mph E
Humidity65%
Visibility6.2 mi
Dew point41°
Tue, 1054° / 50°1.18Rain
54 °Rain

Semiahmoo, Tuesday, 10 November

Rain. High 54°, low 50°.

Pressure30.03 inHg
Wind8.9 mph E
Humidity94%
Visibility3.5 mi
Dew point49°
Wed, 1163° / 54°0.63Heavy rain
63 °Heavy rain

Semiahmoo, Wednesday, 11 November

Heavy rain. High 63°, low 54°.

Pressure29.88 inHg
Wind14.9 mph SE
Humidity70%
Visibility6.2 mi
Dew point52°
Thu, 1259° / 49°0Overcast
59 °Overcast

Semiahmoo, Thursday, 12 November

Overcast. High 59°, low 49°.

Pressure29.74 inHg
Wind1.7 mph SE
Humidity79%
Visibility6.2 mi
Dew point50°
Fri, 1353° / 49°0.65Rain
53 °Rain

Semiahmoo, Friday, 13 November

Rain. High 53°, low 49°.

Pressure29.32 inHg
Wind18.8 mph S
Humidity89%
Visibility—
Dew point46°
Sat, 1449° / 46°1.23Rain
49 °Rain

Semiahmoo, Saturday, 14 November

Rain. High 49°, low 46°.

Pressure29.56 inHg
Wind17.9 mph S
Humidity90%
Visibility—
Dew point46°
Sun, 1546° / 45°1Rain
46 °Rain

Semiahmoo, Sunday, 15 November

Rain. High 46°, low 45°.

Pressure29.68 inHg
Wind7.8 mph N
Humidity96%
Visibility—
Dew point44°
Mon, 1649° / 43°0.09Light rain
49 °Light rain

Semiahmoo, Monday, 16 November

Light rain. High 49°, low 43°.

Pressure30.09 inHg
Wind6.9 mph S
Humidity85%
Visibility—
Dew point44°
Tue, 1749° / 40°0Overcast
49 °Overcast

Semiahmoo, Tuesday, 17 November

Overcast. High 49°, low 40°.

Pressure30.39 inHg
Wind6.2 mph NE
Humidity76%
Visibility—
Dew point38°
Wed, 1847° / 37°0Overcast
47 °Overcast

Semiahmoo, Wednesday, 18 November

Overcast. High 47°, low 37°.

Pressure30.36 inHg
Wind5.8 mph NW
Humidity64%
Visibility—
Dew point29°
Thu, 1947° / 35°0Clear
47 °Clear

Semiahmoo, Thursday, 19 November

Clear. High 47°, low 35°.

Pressure30.18 inHg
Wind5.8 mph NE
Humidity60%
Visibility—
Dew point27°
Fri, 2046° / 34°0Clear
46 °Clear

Semiahmoo, Friday, 20 November

Clear. High 46°, low 34°.

Pressure30.12 inHg
Wind5.9 mph NE
Humidity56%
Visibility—
Dew point25°
Sat, 2145° / 34°0Clear
45 °Clear

Semiahmoo, Saturday, 21 November

Clear. High 45°, low 34°.

Pressure29.91 inHg
Wind5.9 mph E
Humidity62%
Visibility—
Dew point28°
Sun, 2242° / 35°0Overcast
42 °Overcast

Semiahmoo, Sunday, 22 November

Overcast. High 42°, low 35°.

Pressure29.97 inHg
Wind7.3 mph E
Humidity75%
Visibility—
Dew point32°
Mon, 2343° / 38°0Overcast
43 °Overcast

Semiahmoo, Monday, 23 November

Overcast. High 43°, low 38°.

Pressure30.09 inHg
Wind5.3 mph E
Humidity80%
Visibility—
Dew point34°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Semiahmoo, WA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Semiahmoo, WA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.