Weather in Mountlake Terrace, WA
Mountlake Terrace, Sunday, 9 August, 02:12
Clear. Feels like 56°. High 77°, low 54°.
Monthly outlook for Mountlake Terrace, WA: average high 73.5°, average low 53.7°. That is 0.5° above the climate normal for August. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 15 August (81.5°), the coolest 11 August (49.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 75.8° | 73.4° | +1.3° |
| 19 August – 28 August | 69.6° | 71.3° | -0.9° |
| 29 August – 7 September | at normal | 69.2° | — |
August records over 66 years
0
Mountlake Terrace, Monday, 10 August
Partly cloudy. High 77°, low 51°.
0
Mountlake Terrace, Tuesday, 11 August
Clear. High 76°, low 49°.
0Mountlake Terrace, Wednesday, 12 August
Clear. High 75°, low 51°.
0Mountlake Terrace, Thursday, 13 August
Clear. High 76°, low 52°.
0
Mountlake Terrace, Friday, 14 August
Overcast. High 80°, low 53°.
0Mountlake Terrace, Saturday, 15 August
Overcast. High 81°, low 54°.
0Mountlake Terrace, Sunday, 16 August
Overcast. High 80°, low 53°.
0.22
Mountlake Terrace, Monday, 17 August
Light rain. High 60°, low 56°.
0Mountlake Terrace, Tuesday, 18 August
Overcast. High 75°, low 55°.
0Mountlake Terrace, Wednesday, 19 August
Overcast. High 78°, low 51°.
0.08Mountlake Terrace, Thursday, 20 August
Light rain. High 76°, low 58°.
0.02Mountlake Terrace, Friday, 21 August
Light rain. High 73°, low 57°.
0.39Mountlake Terrace, Saturday, 22 August
Light rain. High 65°, low 57°.
0.02Mountlake Terrace, Sunday, 23 August
Light rain. High 69°, low 54°.
0.58Mountlake Terrace, Monday, 24 August
Rain. High 56°, low 53°.
0.07Mountlake Terrace, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.05
Mountlake Terrace, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.11Mountlake Terrace, Thursday, 27 August
Climate normal for this date — 60-year average.
0.05Mountlake Terrace, Friday, 28 August
Climate normal for this date — 60-year average.
0.11Mountlake Terrace, Saturday, 29 August
Climate normal for this date — 60-year average.
0.07
Mountlake Terrace, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Mountlake Terrace, Monday, 31 August
Climate normal for this date — 60-year average.
0.11Mountlake Terrace, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.09Mountlake Terrace, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.08Mountlake Terrace, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07Mountlake Terrace, Friday, 4 September
Climate normal for this date — 60-year average.
0.09Mountlake Terrace, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12Mountlake Terrace, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Mountlake Terrace, Monday, 7 September
Climate normal for this date — 60-year average.
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 Mountlake Terrace, 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 Mountlake Terrace, 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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