Monthly outlook for Harbor Center, WA: average high 67.5°, average low 54.5°. That is 2.4° below 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 8 August (82.7°), the coolest 10 August (51.7°).
67.5°/54.5°
Average high / low
−2.4°
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
69.5°
72.6°
-1.8°
18 August – 27 August
64.3°
70.6°
-3.5°
28 August – 6 September
at normal
68.7°
—
August records over 66 years
93.6°16 August 2020All-time high
44.1°29 August 1969All-time low
Climate normals and records are computed from the nearest reference point — Lake Stickney (15 mi).
Sun, 0976° / 52°0
76 °
Harbor Center, Sunday, 9 August
Overcast. High 76°, low 52°.
Pressure30.06 inHg
Wind2.6 mph NE
Humidity64%
Visibility6.2 mi
Dew point51°
Mon, 1066° / 52°0
66 °
Harbor Center, Monday, 10 August
Clear. High 66°, low 52°.
Pressure30.09 inHg
Wind1 mph NE
Humidity67%
Visibility6.2 mi
Dew point53°
Tue, 1165° / 53°0
65 °
Harbor Center, Tuesday, 11 August
Mostly clear. High 65°, low 53°.
Pressure30.12 inHg
Wind4 mph N
Humidity66%
Visibility6.2 mi
Dew point52°
Wed, 1265° / 54°0
65 °
Harbor Center, Wednesday, 12 August
Clear. High 65°, low 54°.
Pressure30.00 inHg
Wind1.8 mph NE
Humidity66%
Visibility6.2 mi
Dew point53°
Thu, 1367° / 55°0
67 °
Harbor Center, Thursday, 13 August
Clear. High 67°, low 55°.
Pressure29.97 inHg
Wind7.7 mph N
Humidity65%
Visibility—
Dew point53°
Fri, 1469° / 55°0
69 °
Harbor Center, Friday, 14 August
Clear. High 69°, low 55°.
Pressure29.97 inHg
Wind9 mph NW
Humidity59%
Visibility—
Dew point51°
Sat, 1569° / 57°0
69 °
Harbor Center, Saturday, 15 August
Clear. High 69°, low 57°.
Pressure30.00 inHg
Wind7.8 mph N
Humidity58%
Visibility—
Dew point52°
Sun, 1669° / 57°0
69 °
Harbor Center, Sunday, 16 August
Mostly clear. High 69°, low 57°.
Pressure30.00 inHg
Wind10.6 mph NW
Humidity59%
Visibility—
Dew point53°
Mon, 1767° / 55°0
67 °
Harbor Center, Monday, 17 August
Mostly clear. High 67°, low 55°.
Pressure30.00 inHg
Wind9.2 mph N
Humidity62%
Visibility—
Dew point53°
Tue, 1867° / 55°0
67 °
Harbor Center, Tuesday, 18 August
Mostly clear. High 67°, low 55°.
Pressure30.03 inHg
Wind9.8 mph N
Humidity61%
Visibility—
Dew point52°
Wed, 1963° / 54°0
63 °
Harbor Center, Wednesday, 19 August
Overcast. High 63°, low 54°.
Pressure30.09 inHg
Wind9.1 mph N
Humidity70%
Visibility—
Dew point52°
Thu, 2063° / 54°0
63 °
Harbor Center, Thursday, 20 August
Partly cloudy. High 63°, low 54°.
Pressure30.06 inHg
Wind12.2 mph N
Humidity75%
Visibility—
Dew point54°
Fri, 2164° / 53°0
64 °
Harbor Center, Friday, 21 August
Mostly clear. High 64°, low 53°.
Pressure30.03 inHg
Wind7.7 mph N
Humidity70%
Visibility—
Dew point52°
Sat, 2264° / 54°0
64 °
Harbor Center, Saturday, 22 August
Overcast. High 64°, low 54°.
Pressure29.97 inHg
Wind11.7 mph N
Humidity64%
Visibility—
Dew point51°
Sun, 2364° / 53°0
64 °
Harbor Center, Sunday, 23 August
Overcast. High 64°, low 53°.
Pressure30.06 inHg
Wind7.9 mph N
Humidity73%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2470° / 54°0.07
70 °
Harbor Center, Monday, 24 August
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.07 in
Chance of precipitation20%
Record high83° (2025)
Record low46° (1993)
Tue, 2571° / 53°0.07
71 °
Harbor Center, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high71°
Average low53°
Average precipitation0.07 in
Chance of precipitation20%
Record high83° (2025)
Record low46° (1993)
Wed, 2671° / 54°0.05
71 °
Harbor Center, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.05 in
Chance of precipitation18%
Record high83° (1986)
Record low46° (1993)
Thu, 2771° / 54°0.1
71 °
Harbor Center, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.1 in
Chance of precipitation28%
Record high85° (1986)
Record low47° (1995)
Fri, 2870° / 54°0.05
70 °
Harbor Center, Friday, 28 August
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.05 in
Chance of precipitation27%
Record high85° (1967)
Record low47° (2000)
Sat, 2970° / 54°0.11
70 °
Harbor Center, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.11 in
Chance of precipitation32%
Record high87° (2017)
Record low44° (1969)
Sun, 3069° / 54°0.07
69 °
Harbor Center, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.07 in
Chance of precipitation40%
Record high81° (1987)
Record low46° (1964)
Mon, 3168° / 54°0.07
68 °
Harbor Center, Monday, 31 August
Climate normal for this date — 60-year average.
Average high68°
Average low54°
Average precipitation0.07 in
Chance of precipitation32%
Record high86° (1987)
Record low44° (1964)
Tue, 0168° / 53°0.11
68 °
Harbor Center, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high68°
Average low53°
Average precipitation0.11 in
Chance of precipitation30%
Record high83° (1974)
Record low44° (1973)
Wed, 0269° / 53°0.09
69 °
Harbor Center, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high69°
Average low53°
Average precipitation0.09 in
Chance of precipitation30%
Record high86° (1988)
Record low44° (1960)
Thu, 0369° / 53°0.08
69 °
Harbor Center, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high69°
Average low53°
Average precipitation0.08 in
Chance of precipitation25%
Record high87° (1988)
Record low46° (1975)
Fri, 0468° / 53°0.07
68 °
Harbor Center, Friday, 4 September
Climate normal for this date — 60-year average.
Average high68°
Average low53°
Average precipitation0.07 in
Chance of precipitation25%
Record high82° (1988)
Record low45° (1965)
Sat, 0568° / 53°0.09
68 °
Harbor Center, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high68°
Average low53°
Average precipitation0.09 in
Chance of precipitation30%
Record high94° (2017)
Record low45° (2002)
Sun, 0668° / 52°0.12
68 °
Harbor Center, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high68°
Average low52°
Average precipitation0.12 in
Chance of precipitation28%
Record high84° (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 Harbor Center, 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 Center, 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.