Monthly outlook for Harbor Heights, WA: average high 84.6°, average low 54.1°. That is 4.6° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 15 August (94°), the coolest 23 August (50.7°).
84.6°/54.1°
Average high / low
+4.6°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
85.7°
77.1°
+4.7°
18 August – 27 August
82.7°
74.6°
+4.5°
28 August – 6 September
at normal
72.8°
—
August records over 66 years
98.4°9 August 1981All-time high
46°22 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Tacoma (9 mi).
Sun, 0976° / 52°0
76 °
Harbor Heights, Sunday, 9 August
Overcast. High 76°, low 52°.
Pressure30.03 inHg
Wind3.7 mph SW
Humidity40%
Visibility6.2 mi
Dew point50°
Mon, 1083° / 52°0
83 °
Harbor Heights, Monday, 10 August
Partly cloudy. High 83°, low 52°.
Pressure30.09 inHg
Wind3.5 mph SW
Humidity45%
Visibility6.2 mi
Dew point51°
Tue, 1186° / 52°0
86 °
Harbor Heights, Tuesday, 11 August
Clear. High 86°, low 52°.
Pressure30.09 inHg
Wind0.5 mph W
Humidity38%
Visibility6.2 mi
Dew point51°
Wed, 1281° / 55°0
81 °
Harbor Heights, Wednesday, 12 August
Clear. High 81°, low 55°.
Pressure30.00 inHg
Wind6.6 mph SW
Humidity47%
Visibility6.2 mi
Dew point53°
Thu, 1383° / 52°0
83 °
Harbor Heights, Thursday, 13 August
Clear. High 83°, low 52°.
Pressure29.91 inHg
Wind9.4 mph N
Humidity30%
Visibility—
Dew point45°
Fri, 1487° / 56°0
87 °
Harbor Heights, Friday, 14 August
Clear. High 87°, low 56°.
Pressure29.94 inHg
Wind8.5 mph N
Humidity29%
Visibility—
Dew point48°
Sat, 1594° / 57°0
94 °
Harbor Heights, Saturday, 15 August
Mostly clear. High 94°, low 57°.
Pressure29.97 inHg
Wind5.5 mph NW
Humidity20%
Visibility—
Dew point43°
Sun, 1693° / 57°0
93 °
Harbor Heights, Sunday, 16 August
Clear. High 93°, low 57°.
Pressure29.97 inHg
Wind5.2 mph NW
Humidity21%
Visibility—
Dew point42°
Mon, 1791° / 56°0
91 °
Harbor Heights, Monday, 17 August
Clear. High 91°, low 56°.
Pressure29.97 inHg
Wind6 mph N
Humidity23%
Visibility—
Dew point45°
Tue, 1885° / 54°0
85 °
Harbor Heights, Tuesday, 18 August
Overcast. High 85°, low 54°.
Pressure30.00 inHg
Wind5.8 mph NW
Humidity29%
Visibility—
Dew point46°
Wed, 1981° / 53°0
81 °
Harbor Heights, Wednesday, 19 August
Overcast. High 81°, low 53°.
Pressure30.06 inHg
Wind6.3 mph N
Humidity35%
Visibility—
Dew point47°
Thu, 2083° / 54°0
83 °
Harbor Heights, Thursday, 20 August
Mostly clear. High 83°, low 54°.
Pressure30.03 inHg
Wind7 mph NE
Humidity37%
Visibility—
Dew point51°
Fri, 2183° / 54°0
83 °
Harbor Heights, Friday, 21 August
Clear. High 83°, low 54°.
Pressure30.00 inHg
Wind6.9 mph N
Humidity33%
Visibility—
Dew point48°
Sat, 2286° / 54°0
86 °
Harbor Heights, Saturday, 22 August
Overcast. High 86°, low 54°.
Pressure29.94 inHg
Wind5.3 mph NW
Humidity34%
Visibility—
Dew point48°
Sun, 2378° / 51°0
78 °
Harbor Heights, Sunday, 23 August
Overcast. High 78°, low 51°.
Pressure30.03 inHg
Wind4.4 mph NW
Humidity46%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2474° / 56°0.06
74 °
Harbor Heights, Monday, 24 August
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.06 in
Chance of precipitation17%
Record high90° (2025)
Record low50° (2012)
Tue, 2574° / 55°0.05
74 °
Harbor Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0.05 in
Chance of precipitation17%
Record high89° (2025)
Record low48° (1995)
Wed, 2675° / 55°0.03
75 °
Harbor Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high75°
Average low55°
Average precipitation0.03 in
Chance of precipitation18%
Record high89° (2016)
Record low49° (1969)
Thu, 2775° / 56°0.06
75 °
Harbor Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high75°
Average low56°
Average precipitation0.06 in
Chance of precipitation18%
Record high92° (1986)
Record low49° (1962)
Fri, 2874° / 56°0.04
74 °
Harbor Heights, Friday, 28 August
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.04 in
Chance of precipitation15%
Record high92° (1967)
Record low46° (1960)
Sat, 2974° / 56°0.09
74 °
Harbor Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.09 in
Chance of precipitation23%
Record high88° (1996)
Record low49° (1969)
Sun, 3073° / 56°0.07
73 °
Harbor Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.07 in
Chance of precipitation25%
Record high86° (1987)
Record low46° (1965)
Mon, 3172° / 55°0.05
72 °
Harbor Heights, Monday, 31 August
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.05 in
Chance of precipitation23%
Record high91° (1987)
Record low47° (2008)
Tue, 0172° / 55°0.07
72 °
Harbor Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.07 in
Chance of precipitation25%
Record high89° (1987)
Record low47° (1964)
Wed, 0273° / 55°0.06
73 °
Harbor Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.06 in
Chance of precipitation25%
Record high93° (1988)
Record low46° (2000)
Thu, 0373° / 55°0.05
73 °
Harbor Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.05 in
Chance of precipitation18%
Record high92° (1988)
Record low46° (1975)
Fri, 0473° / 55°0.02
73 °
Harbor Heights, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.02 in
Chance of precipitation15%
Record high87° (2017)
Record low47° (1965)
Sat, 0572° / 55°0.05
72 °
Harbor Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.05 in
Chance of precipitation22%
Record high94° (2017)
Record low47° (2015)
Sun, 0672° / 54°0.07
72 °
Harbor Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high72°
Average low54°
Average precipitation0.07 in
Chance of precipitation23%
Record high91° (2017)
Record low46° (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 Harbor 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 Harbor 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.