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As of 17:42 PDT

Weather in Semiahmoo, WA

54°Current weather

Semiahmoo, Thursday, 22 October, 17:42

Mostly clear. Feels like 53°. High 55°, low 45°.

Pressure29.97 inHg
Wind4 mph W
Humidity75%
Visibility6.2 mi
Dew point46°
Fri, 2356° / 40°0Overcast
56 °Overcast

Semiahmoo, Friday, 23 October

Overcast. High 56°, low 40°.

Pressure30.33 inHg
Wind1.1 mph N
Humidity84%
Visibility6.2 mi
Dew point46°
Sat, 2448° / 39°0.14Rain
48 °Rain

Semiahmoo, Saturday, 24 October

Rain. High 48°, low 39°.

Pressure30.21 inHg
Wind3.2 mph NE
Humidity97%
Visibility3.7 mi
Dew point46°
Sun, 2554° / 46°0.21Rain
54 °Rain

Semiahmoo, Sunday, 25 October

Rain. High 54°, low 46°.

Pressure29.97 inHg
Wind10.3 mph E
Humidity82%
Visibility6.2 mi
Dew point46°
Mon, 2658° / 45°0.09Light rain
58 °Light rain

Semiahmoo, Monday, 26 October

Light rain. High 58°, low 45°.

Pressure30.03 inHg
Wind1 mph W
Humidity83%
Visibility6.2 mi
Dew point48°
Tue, 2752° / 42°0Overcast
52 °Overcast

Semiahmoo, Tuesday, 27 October

Overcast. High 52°, low 42°.

Pressure30.18 inHg
Wind4.7 mph SE
Humidity94%
Visibility—
Dew point45°
Wed, 2857° / 41°0Overcast
57 °Overcast

Semiahmoo, Wednesday, 28 October

Overcast. High 57°, low 41°.

Pressure30.21 inHg
Wind5.3 mph W
Humidity62%
Visibility—
Dew point38°
Thu, 2956° / 42°0Clear
56 °Clear

Semiahmoo, Thursday, 29 October

Clear. High 56°, low 42°.

Pressure30.15 inHg
Wind5.3 mph W
Humidity52%
Visibility—
Dew point33°
Fri, 3055° / 41°0Clear
55 °Clear

Semiahmoo, Friday, 30 October

Clear. High 55°, low 41°.

Pressure30.12 inHg
Wind4.5 mph W
Humidity47%
Visibility—
Dew point30°
Sat, 3155° / 40°0Clear
55 °Clear

Semiahmoo, Saturday, 31 October

Clear. High 55°, low 40°.

Pressure30.09 inHg
Wind5.2 mph W
Humidity48%
Visibility—
Dew point30°
Sun, 0154° / 40°0Clear
54 °Clear

Semiahmoo, Sunday, 1 November

Clear. High 54°, low 40°.

Pressure30.09 inHg
Wind4.4 mph W
Humidity45%
Visibility—
Dew point28°
Mon, 0254° / 40°0Clear
54 °Clear

Semiahmoo, Monday, 2 November

Clear. High 54°, low 40°.

Pressure30.15 inHg
Wind4.7 mph W
Humidity46%
Visibility—
Dew point28°
Tue, 0357° / 42°0Overcast
57 °Overcast

Semiahmoo, Tuesday, 3 November

Overcast. High 57°, low 42°.

Pressure30.12 inHg
Wind5.2 mph NW
Humidity45%
Visibility—
Dew point28°
Wed, 0457° / 41°0Overcast
57 °Overcast

Semiahmoo, Wednesday, 4 November

Overcast. High 57°, low 41°.

Pressure30.09 inHg
Wind5.8 mph NW
Humidity44%
Visibility—
Dew point28°
Thu, 0554° / 47°0Overcast
54 °Overcast

Semiahmoo, Thursday, 5 November

Overcast. High 54°, low 47°.

Pressure30.00 inHg
Wind4.3 mph NW
Humidity78%
Visibility—
Dew point45°
Fri, 0655° / 45°0Light rain
55 °Light rain

Semiahmoo, Friday, 6 November

Light rain. High 55°, low 45°.

Pressure29.80 inHg
Wind8.7 mph E
Humidity48%
Visibility—
Dew point31°

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.