Monthly outlook for Lake Heights, WA: average high 85.1°, average low 59.4°. That is 5.6° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 16 August (89.6°), the coolest 10 August (53.7°).
85.1°/59.4°
Average high / low
+5.6°
Above normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.9°
76°
+4.4°
19 August – 28 August
87.2°
73.5°
+7.6°
29 August – 7 September
at normal
71.5°
—
August records over 66 years
95.9°9 August 1981All-time high
43°30 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Bellevue (3 mi).
Mon, 1078° / 54°0
78 °
Lake Heights, Monday, 10 August
Overcast. High 78°, low 54°.
Pressure30.06 inHg
Wind3.8 mph SW
Humidity44%
Visibility6.2 mi
Dew point50°
Tue, 1183° / 57°0
83 °
Lake Heights, Tuesday, 11 August
Clear. High 83°, low 57°.
Pressure30.09 inHg
Wind1.9 mph NW
Humidity37%
Visibility6.2 mi
Dew point50°
Wed, 1282° / 58°0
82 °
Lake Heights, Wednesday, 12 August
Clear. High 82°, low 58°.
Pressure30.00 inHg
Wind2.5 mph NW
Humidity41%
Visibility6.2 mi
Dew point52°
Thu, 1383° / 59°0
83 °
Lake Heights, Thursday, 13 August
Clear. High 83°, low 59°.
Pressure29.85 inHg
Wind9.1 mph NW
Humidity35%
Visibility—
Dew point50°
Fri, 1490° / 61°0
90 °
Lake Heights, Friday, 14 August
Partly cloudy. High 90°, low 61°.
Pressure29.85 inHg
Wind6.6 mph N
Humidity26%
Visibility—
Dew point47°
Sat, 1587° / 61°0
87 °
Lake Heights, Saturday, 15 August
Overcast. High 87°, low 61°.
Pressure29.97 inHg
Wind6.8 mph N
Humidity31%
Visibility—
Dew point49°
Sun, 1690° / 61°0
90 °
Lake Heights, Sunday, 16 August
Partly cloudy. High 90°, low 61°.
Pressure30.03 inHg
Wind6.3 mph NW
Humidity27%
Visibility—
Dew point48°
Mon, 1783° / 58°0
83 °
Lake Heights, Monday, 17 August
Partly cloudy. High 83°, low 58°.
Pressure30.12 inHg
Wind9.1 mph N
Humidity34%
Visibility—
Dew point48°
Tue, 1885° / 58°0
85 °
Lake Heights, Tuesday, 18 August
Clear. High 85°, low 58°.
Pressure30.09 inHg
Wind8.1 mph N
Humidity32%
Visibility—
Dew point48°
Wed, 1988° / 61°0
88 °
Lake Heights, Wednesday, 19 August
Clear. High 88°, low 61°.
Pressure30.06 inHg
Wind9.6 mph N
Humidity33%
Visibility—
Dew point53°
Thu, 2085° / 61°0
85 °
Lake Heights, Thursday, 20 August
Clear. High 85°, low 61°.
Pressure30.06 inHg
Wind9.3 mph N
Humidity35%
Visibility—
Dew point52°
Fri, 2185° / 59°0
85 °
Lake Heights, Friday, 21 August
Clear. High 85°, low 59°.
Pressure30.00 inHg
Wind8.2 mph NW
Humidity32%
Visibility—
Dew point49°
Sat, 2288° / 62°0
88 °
Lake Heights, Saturday, 22 August
Clear. High 88°, low 62°.
Pressure30.00 inHg
Wind9.1 mph N
Humidity32%
Visibility—
Dew point52°
Sun, 2387° / 62°0
87 °
Lake Heights, Sunday, 23 August
Clear. High 87°, low 62°.
Pressure30.09 inHg
Wind9 mph N
Humidity35%
Visibility—
Dew point54°
Mon, 2489° / 62°0
89 °
Lake Heights, Monday, 24 August
Clear. High 89°, low 62°.
Pressure29.91 inHg
Wind9.3 mph N
Humidity28%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2573° / 54°0.07
73 °
Lake Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high73°
Average low54°
Average precipitation0.07 in
Chance of precipitation18%
Record high87° (2025)
Record low46° (1995)
Wed, 2674° / 54°0.05
74 °
Lake Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high74°
Average low54°
Average precipitation0.05 in
Chance of precipitation22%
Record high88° (1986)
Record low46° (1993)
Thu, 2774° / 55°0.08
74 °
Lake Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0.08 in
Chance of precipitation27%
Record high90° (1986)
Record low48° (1962)
Fri, 2874° / 55°0.04
74 °
Lake Heights, Friday, 28 August
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0.04 in
Chance of precipitation20%
Record high91° (1967)
Record low45° (2000)
Sat, 2973° / 55°0.11
73 °
Lake Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.11 in
Chance of precipitation25%
Record high87° (2017)
Record low44° (1980)
Sun, 3072° / 55°0.07
72 °
Lake Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.07 in
Chance of precipitation33%
Record high86° (1967)
Record low43° (1965)
Mon, 3171° / 54°0.06
71 °
Lake Heights, Monday, 31 August
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.06 in
Chance of precipitation30%
Record high91° (1987)
Record low45° (1964)
Tue, 0171° / 54°0.08
71 °
Lake Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.08 in
Chance of precipitation27%
Record high87° (1987)
Record low43° (1973)
Wed, 0272° / 53°0.08
72 °
Lake Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high72°
Average low53°
Average precipitation0.08 in
Chance of precipitation30%
Record high93° (1988)
Record low43° (1960)
Thu, 0372° / 54°0.08
72 °
Lake Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high72°
Average low54°
Average precipitation0.08 in
Chance of precipitation25%
Record high92° (1988)
Record low44° (1975)
Fri, 0472° / 54°0.06
72 °
Lake Heights, Friday, 4 September
Climate normal for this date — 60-year average.
Average high72°
Average low54°
Average precipitation0.06 in
Chance of precipitation22%
Record high87° (2017)
Record low44° (1965)
Sat, 0571° / 54°0.07
71 °
Lake Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.07 in
Chance of precipitation30%
Record high93° (2017)
Record low46° (2000)
Sun, 0671° / 53°0.1
71 °
Lake Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high71°
Average low53°
Average precipitation0.1 in
Chance of precipitation28%
Record high89° (2017)
Record low42° (1960)
Mon, 0771° / 53°0.06
71 °
Lake Heights, Monday, 7 September
Climate normal for this date — 60-year average.
Average high71°
Average low53°
Average precipitation0.06 in
Chance of precipitation28%
Record high88° (1981)
Record low42° (1960)
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 Lake Heights, 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 Lake Heights, 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.