Monthly outlook for Mukilteo, WA: average high 75.2°, average low 53°. That is 0.5° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.9 inches. The warmest day looks like 18 August (81.3°), the coolest 11 August (50.6°).
75.2°/53°
Average high / low
+0.5°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
75.5°
74.9°
+0.3°
18 August – 27 August
74.6°
72.9°
+1°
28 August – 6 September
at normal
71.1°
—
August records over 66 years
94.5°16 August 2020All-time high
44.2°18 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Everett (7 mi).
Sun, 0975° / 51°0
75 °
Mukilteo, Sunday, 9 August
Overcast. High 75°, low 51°.
Pressure30.03 inHg
Wind1.3 mph NW
Humidity44%
Visibility6.2 mi
Dew point51°
Mon, 1075° / 51°0
75 °
Mukilteo, Monday, 10 August
Partly cloudy. High 75°, low 51°.
Pressure30.06 inHg
Wind2.3 mph NW
Humidity44%
Visibility6.2 mi
Dew point52°
Tue, 1176° / 51°0
76 °
Mukilteo, Tuesday, 11 August
Clear. High 76°, low 51°.
Pressure30.09 inHg
Wind3.3 mph NW
Humidity46%
Visibility6.2 mi
Dew point53°
Wed, 1265° / 56°0
65 °
Mukilteo, Wednesday, 12 August
Light rain. High 65°, low 56°.
Pressure30.06 inHg
Wind2.3 mph SW
Humidity78%
Visibility6.2 mi
Dew point58°
Thu, 1372° / 53°0.04
72 °
Mukilteo, Thursday, 13 August
Light rain. High 72°, low 53°.
Pressure30.00 inHg
Wind7.7 mph N
Humidity56%
Visibility—
Dew point51°
Fri, 1472° / 51°0
72 °
Mukilteo, Friday, 14 August
Overcast. High 72°, low 51°.
Pressure30.00 inHg
Wind8.7 mph NW
Humidity52%
Visibility—
Dew point51°
Sat, 1578° / 53°0
78 °
Mukilteo, Saturday, 15 August
Overcast. High 78°, low 53°.
Pressure29.97 inHg
Wind5.2 mph N
Humidity46%
Visibility—
Dew point51°
Sun, 1679° / 53°0
79 °
Mukilteo, Sunday, 16 August
Clear. High 79°, low 53°.
Pressure30.03 inHg
Wind8.4 mph NW
Humidity37%
Visibility—
Dew point48°
Mon, 1781° / 52°0
81 °
Mukilteo, Monday, 17 August
Partly cloudy. High 81°, low 52°.
Pressure30.00 inHg
Wind9.4 mph NW
Humidity32%
Visibility—
Dew point46°
Tue, 1881° / 53°0
81 °
Mukilteo, Tuesday, 18 August
Overcast. High 81°, low 53°.
Pressure30.03 inHg
Wind8.1 mph NW
Humidity32%
Visibility—
Dew point46°
Wed, 1965° / 54°0
65 °
Mukilteo, Wednesday, 19 August
Overcast. High 65°, low 54°.
Pressure30.06 inHg
Wind6 mph NW
Humidity69%
Visibility—
Dew point54°
Thu, 2075° / 54°0
75 °
Mukilteo, Thursday, 20 August
Overcast. High 75°, low 54°.
Pressure30.00 inHg
Wind9.5 mph NW
Humidity50%
Visibility—
Dew point53°
Fri, 2180° / 55°0
80 °
Mukilteo, Friday, 21 August
Mostly clear. High 80°, low 55°.
Pressure30.03 inHg
Wind9.8 mph NW
Humidity40%
Visibility—
Dew point51°
Sat, 2271° / 53°0
71 °
Mukilteo, Saturday, 22 August
Overcast. High 71°, low 53°.
Pressure30.03 inHg
Wind9.2 mph NW
Humidity60%
Visibility—
Dew point55°
Sun, 2374° / 52°0
74 °
Mukilteo, Sunday, 23 August
Partly cloudy. High 74°, low 52°.
Pressure29.94 inHg
Wind8 mph NW
Humidity49%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2472° / 55°0.07
72 °
Mukilteo, Monday, 24 August
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.07 in
Chance of precipitation20%
Record high85° (1985)
Record low45° (1993)
Tue, 2573° / 55°0.08
73 °
Mukilteo, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.08 in
Chance of precipitation25%
Record high86° (1996)
Record low47° (1973)
Wed, 2673° / 55°0.06
73 °
Mukilteo, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.06 in
Chance of precipitation20%
Record high88° (1986)
Record low47° (1993)
Thu, 2773° / 56°0.13
73 °
Mukilteo, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.13 in
Chance of precipitation28%
Record high89° (1986)
Record low49° (1995)
Fri, 2873° / 55°0.06
73 °
Mukilteo, Friday, 28 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.06 in
Chance of precipitation25%
Record high90° (1967)
Record low46° (2000)
Sat, 2972° / 55°0.11
72 °
Mukilteo, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.11 in
Chance of precipitation38%
Record high88° (2017)
Record low45° (1969)
Sun, 3071° / 55°0.09
71 °
Mukilteo, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high71°
Average low55°
Average precipitation0.09 in
Chance of precipitation37%
Record high85° (1987)
Record low46° (1965)
Mon, 3171° / 55°0.08
71 °
Mukilteo, Monday, 31 August
Climate normal for this date — 60-year average.
Average high71°
Average low55°
Average precipitation0.08 in
Chance of precipitation33%
Record high91° (1987)
Record low46° (1964)
Tue, 0171° / 54°0.16
71 °
Mukilteo, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.16 in
Chance of precipitation30%
Record high86° (1987)
Record low44° (1973)
Wed, 0271° / 54°0.09
71 °
Mukilteo, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.09 in
Chance of precipitation32%
Record high91° (1988)
Record low45° (1960)
Thu, 0371° / 54°0.09
71 °
Mukilteo, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.09 in
Chance of precipitation25%
Record high92° (1988)
Record low46° (1975)
Fri, 0471° / 54°0.06
71 °
Mukilteo, Friday, 4 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.06 in
Chance of precipitation32%
Record high85° (1988)
Record low45° (1965)
Sat, 0571° / 54°0.1
71 °
Mukilteo, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.1 in
Chance of precipitation25%
Record high96° (2017)
Record low46° (2002)
Sun, 0670° / 53°0.13
70 °
Mukilteo, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high70°
Average low53°
Average precipitation0.13 in
Chance of precipitation30%
Record high85° (2017)
Record low44° (1969)
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 Mukilteo, 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 Mukilteo, 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.