Weather in Semiahmoo, WA
Semiahmoo, Wednesday, 4 November, 10:26
Overcast. Feels like 49°. High 52°, low 42°.
0.01
Semiahmoo, Thursday, 5 November
Light rain. High 52°, low 44°.
0.7Semiahmoo, Friday, 6 November
Rain. High 53°, low 45°.
0.22Semiahmoo, Saturday, 7 November
Rain. High 60°, low 49°.
0.54Semiahmoo, Sunday, 8 November
Rain. High 55°, low 45°.
0Semiahmoo, Monday, 9 November
Overcast. High 52°, low 41°.
0Semiahmoo, Tuesday, 10 November
Overcast. High 49°, low 38°.
0Semiahmoo, Wednesday, 11 November
Overcast. High 53°, low 42°.
0Semiahmoo, Thursday, 12 November
Overcast. High 56°, low 47°.
0.02Semiahmoo, Friday, 13 November
Light rain. High 58°, low 49°.
0Semiahmoo, Saturday, 14 November
Overcast. High 59°, low 49°.
0.13Semiahmoo, Sunday, 15 November
Light rain. High 52°, low 47°.
0Semiahmoo, Monday, 16 November
Overcast. High 51°, low 43°.
0.06Semiahmoo, Tuesday, 17 November
Light rain. High 49°, low 41°.
0.84Semiahmoo, Wednesday, 18 November
Rain. High 48°, low 44°.
0.09Semiahmoo, Thursday, 19 November
Light rain. High 47°, low 40°.
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.
Sun and moon today
Weather history
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