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As of 20:39 PDT

Weather in Semiahmoo, WA

65°Current weather

Semiahmoo, Saturday, 8 August, 20:39

Clear. Feels like 65°. High 75°, low 56°.

Pressure30.03 inHg
Wind3 mph W
Humidity78%
Visibility6.2 mi
Dew point58°
Sun, 0973° / 53°0Overcast
73 °Overcast

Semiahmoo, Sunday, 9 August

Overcast. High 73°, low 53°.

Pressure30.06 inHg
Wind8.8 mph S
Humidity67%
Visibility6.2 mi
Dew point53°
Mon, 1069° / 53°0Clear
69 °Clear

Semiahmoo, Monday, 10 August

Clear. High 69°, low 53°.

Pressure30.09 inHg
Wind8.3 mph S
Humidity68%
Visibility6.2 mi
Dew point54°
Tue, 1170° / 54°0Clear
70 °Clear

Semiahmoo, Tuesday, 11 August

Clear. High 70°, low 54°.

Pressure30.12 inHg
Wind7.4 mph S
Humidity65%
Visibility6.2 mi
Dew point54°
Wed, 1268° / 55°0Clear
68 °Clear

Semiahmoo, Wednesday, 12 August

Clear. High 68°, low 55°.

Pressure30.00 inHg
Wind7.7 mph S
Humidity69%
Visibility6.2 mi
Dew point55°
Thu, 1373° / 55°0Clear
73 °Clear

Semiahmoo, Thursday, 13 August

Clear. High 73°, low 55°.

Pressure29.97 inHg
Wind5.7 mph SW
Humidity63%
Visibility—
Dew point55°
Fri, 1476° / 57°0Mostly clear
76 °Mostly clear

Semiahmoo, Friday, 14 August

Mostly clear. High 76°, low 57°.

Pressure29.97 inHg
Wind8.3 mph W
Humidity49%
Visibility—
Dew point54°
Sat, 1576° / 58°0Clear
76 °Clear

Semiahmoo, Saturday, 15 August

Clear. High 76°, low 58°.

Pressure30.00 inHg
Wind5.5 mph SW
Humidity51%
Visibility—
Dew point53°
Sun, 1673° / 59°0Overcast
73 °Overcast

Semiahmoo, Sunday, 16 August

Overcast. High 73°, low 59°.

Pressure30.03 inHg
Wind7.7 mph SE
Humidity53%
Visibility—
Dew point53°
Mon, 1771° / 56°0Partly cloudy
71 °Partly cloudy

Semiahmoo, Monday, 17 August

Partly cloudy. High 71°, low 56°.

Pressure30.00 inHg
Wind7.3 mph S
Humidity55%
Visibility—
Dew point53°
Tue, 1870° / 55°0Overcast
70 °Overcast

Semiahmoo, Tuesday, 18 August

Overcast. High 70°, low 55°.

Pressure30.03 inHg
Wind8.4 mph S
Humidity61%
Visibility—
Dew point54°
Wed, 1967° / 56°0Overcast
67 °Overcast

Semiahmoo, Wednesday, 19 August

Overcast. High 67°, low 56°.

Pressure30.09 inHg
Wind10.5 mph SE
Humidity65%
Visibility—
Dew point54°
Thu, 2067° / 55°0Mostly clear
67 °Mostly clear

Semiahmoo, Thursday, 20 August

Mostly clear. High 67°, low 55°.

Pressure30.06 inHg
Wind8.5 mph S
Humidity66%
Visibility—
Dew point55°
Fri, 2168° / 55°0Mostly clear
68 °Mostly clear

Semiahmoo, Friday, 21 August

Mostly clear. High 68°, low 55°.

Pressure30.03 inHg
Wind6.1 mph SW
Humidity66%
Visibility—
Dew point53°
Sat, 2271° / 56°0Overcast
71 °Overcast

Semiahmoo, Saturday, 22 August

Overcast. High 71°, low 56°.

Pressure29.97 inHg
Wind10.2 mph SE
Humidity56%
Visibility—
Dew point51°
Sun, 2366° / 54°0Overcast
66 °Overcast

Semiahmoo, Sunday, 23 August

Overcast. High 66°, low 54°.

Pressure30.06 inHg
Wind10.5 mph SE
Humidity66%
Visibility—
Dew point52°

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.