Monthly outlook for Langley, WA: average high 67.3°, average low 54.1°. That is 3.8° below 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 8 August (80.1°), the coolest 9 August (51.6°).
67.3°/54.1°
Average high / low
−3.8°
Below 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
68.4°
74.9°
-3.6°
18 August – 27 August
65.3°
72.9°
-4.2°
28 August – 6 September
at normal
70.9°
—
August records over 66 years
96.8°16 August 2020All-time high
44.2°18 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Marysville (12 mi).
Sun, 0975° / 52°0
75 °
Langley, Sunday, 9 August
Overcast. High 75°, low 52°.
Pressure30.06 inHg
Wind1.9 mph N
Humidity61%
Visibility6.2 mi
Dew point51°
Mon, 1066° / 52°0
66 °
Langley, Monday, 10 August
Partly cloudy. High 66°, low 52°.
Pressure30.09 inHg
Wind2.1 mph NW
Humidity64%
Visibility6.2 mi
Dew point52°
Tue, 1166° / 53°0
66 °
Langley, Tuesday, 11 August
Clear. High 66°, low 53°.
Pressure30.12 inHg
Wind3.4 mph N
Humidity66%
Visibility6.2 mi
Dew point52°
Wed, 1261° / 55°0.01
61 °
Langley, Wednesday, 12 August
Light rain. High 61°, low 55°.
Pressure30.06 inHg
Wind5.9 mph N
Humidity91%
Visibility—
Dew point56°
Thu, 1366° / 54°0.03
66 °
Langley, Thursday, 13 August
Light rain. High 66°, low 54°.
Pressure30.00 inHg
Wind7.7 mph NW
Humidity72%
Visibility—
Dew point53°
Fri, 1466° / 53°0
66 °
Langley, Friday, 14 August
Overcast. High 66°, low 53°.
Pressure30.00 inHg
Wind8.8 mph NW
Humidity69%
Visibility—
Dew point53°
Sat, 1570° / 54°0
70 °
Langley, Saturday, 15 August
Overcast. High 70°, low 54°.
Pressure29.97 inHg
Wind6.7 mph N
Humidity58%
Visibility—
Dew point53°
Sun, 1666° / 55°0
66 °
Langley, Sunday, 16 August
Mostly clear. High 66°, low 55°.
Pressure30.06 inHg
Wind9.4 mph NW
Humidity64%
Visibility—
Dew point53°
Mon, 1768° / 54°0
68 °
Langley, Monday, 17 August
Overcast. High 68°, low 54°.
Pressure30.03 inHg
Wind10.3 mph NW
Humidity54%
Visibility—
Dew point50°
Tue, 1868° / 54°0
68 °
Langley, Tuesday, 18 August
Overcast. High 68°, low 54°.
Pressure30.06 inHg
Wind9.5 mph NW
Humidity57%
Visibility—
Dew point51°
Wed, 1961° / 55°0.01
61 °
Langley, Wednesday, 19 August
Light rain. High 61°, low 55°.
Pressure30.06 inHg
Wind6.7 mph NW
Humidity83%
Visibility—
Dew point55°
Thu, 2066° / 54°0
66 °
Langley, Thursday, 20 August
Overcast. High 66°, low 54°.
Pressure30.03 inHg
Wind9 mph NW
Humidity72%
Visibility—
Dew point55°
Fri, 2168° / 56°0
68 °
Langley, Friday, 21 August
Mostly clear. High 68°, low 56°.
Pressure30.06 inHg
Wind10.7 mph NW
Humidity63%
Visibility—
Dew point54°
Sat, 2263° / 55°0
63 °
Langley, Saturday, 22 August
Overcast. High 63°, low 55°.
Pressure30.03 inHg
Wind10.3 mph NW
Humidity77%
Visibility—
Dew point55°
Sun, 2366° / 53°0
66 °
Langley, Sunday, 23 August
Overcast. High 66°, low 53°.
Pressure29.94 inHg
Wind8.5 mph NW
Humidity68%
Visibility—
Dew point53°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2472° / 55°0.07
72 °
Langley, 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 low47° (1993)
Tue, 2573° / 55°0.07
73 °
Langley, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.07 in
Chance of precipitation25%
Record high87° (1996)
Record low47° (1973)
Wed, 2673° / 55°0.06
73 °
Langley, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.06 in
Chance of precipitation22%
Record high89° (1986)
Record low47° (1993)
Thu, 2773° / 56°0.13
73 °
Langley, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.13 in
Chance of precipitation27%
Record high90° (1986)
Record low49° (1960)
Fri, 2873° / 55°0.06
73 °
Langley, Friday, 28 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.06 in
Chance of precipitation27%
Record high91° (1967)
Record low46° (2000)
Sat, 2972° / 55°0.1
72 °
Langley, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.1 in
Chance of precipitation37%
Record high90° (2017)
Record low45° (1969)
Sun, 3071° / 55°0.09
71 °
Langley, 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 low45° (1965)
Mon, 3170° / 55°0.08
70 °
Langley, Monday, 31 August
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.08 in
Chance of precipitation33%
Record high91° (1987)
Record low45° (1964)
Tue, 0171° / 54°0.16
71 °
Langley, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.16 in
Chance of precipitation30%
Record high87° (1987)
Record low44° (1973)
Wed, 0271° / 54°0.09
71 °
Langley, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.09 in
Chance of precipitation33%
Record high92° (1988)
Record low44° (1960)
Thu, 0371° / 54°0.09
71 °
Langley, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.09 in
Chance of precipitation25%
Record high94° (1988)
Record low46° (1975)
Fri, 0471° / 54°0.06
71 °
Langley, 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, 0570° / 54°0.1
70 °
Langley, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.1 in
Chance of precipitation23%
Record high96° (2017)
Record low47° (2000)
Sun, 0670° / 53°0.13
70 °
Langley, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high70°
Average low53°
Average precipitation0.13 in
Chance of precipitation30%
Record high85° (1986)
Record low45° (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 Langley, 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 Langley, 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.