Monthly outlook for Cedar Mill, OR: average high 85.8°, average low 59.7°. That is 2.5° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 23 August (92.4°), the coolest 10 August (51.8°).
85.8°/59.7°
Average high / low
+2.5°
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
85.2°
82.4°
+1.5°
18 August – 27 August
86.8°
79.6°
+4°
28 August – 6 September
at normal
78.2°
—
August records over 66 years
105.4°14 August 2023All-time high
46°18 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Aloha (5 mi).
Sun, 0983° / 52°0
83 °
Cedar Mill, Sunday, 9 August
Partly cloudy. High 83°, low 52°.
Pressure30.03 inHg
Wind3 mph N
Humidity33%
Visibility6.2 mi
Dew point46°
Mon, 1085° / 52°0
85 °
Cedar Mill, Monday, 10 August
Clear. High 85°, low 52°.
Pressure30.06 inHg
Wind3.9 mph N
Humidity38%
Visibility6.2 mi
Dew point49°
Tue, 1186° / 58°0
86 °
Cedar Mill, Tuesday, 11 August
Clear. High 86°, low 58°.
Pressure30.09 inHg
Wind2.3 mph N
Humidity41%
Visibility6.2 mi
Dew point53°
Wed, 1280° / 60°0
80 °
Cedar Mill, Wednesday, 12 August
Overcast. High 80°, low 60°.
Pressure30.06 inHg
Wind4.5 mph N
Humidity59%
Visibility6.2 mi
Dew point55°
Thu, 1380° / 56°0
80 °
Cedar Mill, Thursday, 13 August
Mostly clear. High 80°, low 56°.
Pressure29.97 inHg
Wind8.4 mph N
Humidity37%
Visibility—
Dew point46°
Fri, 1485° / 56°0
85 °
Cedar Mill, Friday, 14 August
Clear. High 85°, low 56°.
Pressure29.94 inHg
Wind8 mph N
Humidity31%
Visibility—
Dew point45°
Sat, 1587° / 63°0
87 °
Cedar Mill, Saturday, 15 August
Overcast. High 87°, low 63°.
Pressure29.97 inHg
Wind9.4 mph N
Humidity35%
Visibility—
Dew point50°
Sun, 1689° / 62°0
89 °
Cedar Mill, Sunday, 16 August
Clear. High 89°, low 62°.
Pressure30.00 inHg
Wind8.2 mph N
Humidity24%
Visibility—
Dew point43°
Mon, 1791° / 61°0
91 °
Cedar Mill, Monday, 17 August
Clear. High 91°, low 61°.
Pressure29.97 inHg
Wind8.5 mph NW
Humidity23%
Visibility—
Dew point43°
Tue, 1884° / 63°0
84 °
Cedar Mill, Tuesday, 18 August
Overcast. High 84°, low 63°.
Pressure30.06 inHg
Wind7.4 mph NW
Humidity26%
Visibility—
Dew point43°
Wed, 1983° / 64°0
83 °
Cedar Mill, Wednesday, 19 August
Overcast. High 83°, low 64°.
Pressure30.03 inHg
Wind6.6 mph N
Humidity33%
Visibility—
Dew point46°
Thu, 2086° / 63°0
86 °
Cedar Mill, Thursday, 20 August
Clear. High 86°, low 63°.
Pressure30.00 inHg
Wind8.4 mph N
Humidity33%
Visibility—
Dew point49°
Fri, 2188° / 64°0
88 °
Cedar Mill, Friday, 21 August
Clear. High 88°, low 64°.
Pressure30.00 inHg
Wind9.2 mph NW
Humidity32%
Visibility—
Dew point49°
Sat, 2288° / 62°0
88 °
Cedar Mill, Saturday, 22 August
Clear. High 88°, low 62°.
Pressure29.94 inHg
Wind9.6 mph N
Humidity32%
Visibility—
Dew point49°
Sun, 2392° / 62°0
92 °
Cedar Mill, Sunday, 23 August
Mostly clear. High 92°, low 62°.
Pressure29.85 inHg
Wind8 mph N
Humidity26%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2479° / 56°0.06
79 °
Cedar Mill, Monday, 24 August
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.06 in
Chance of precipitation13%
Record high99° (1996)
Record low49° (2021)
Tue, 2580° / 56°0.04
80 °
Cedar Mill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.04 in
Chance of precipitation13%
Record high94° (1996)
Record low48° (1975)
Wed, 2681° / 56°0.02
81 °
Cedar Mill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.02 in
Chance of precipitation8%
Record high99° (1986)
Record low48° (1991)
Thu, 2780° / 57°0.02
80 °
Cedar Mill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low57°
Average precipitation0.02 in
Chance of precipitation17%
Record high96° (1972)
Record low49° (1960)
Fri, 2880° / 56°0.02
80 °
Cedar Mill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.02 in
Chance of precipitation10%
Record high99° (2017)
Record low46° (2024)
Sat, 2979° / 57°0.06
79 °
Cedar Mill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low57°
Average precipitation0.06 in
Chance of precipitation20%
Record high93° (1974)
Record low47° (1965)
Sun, 3077° / 56°0.04
77 °
Cedar Mill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.04 in
Chance of precipitation18%
Record high98° (2022)
Record low48° (1966)
Mon, 3177° / 56°0.03
77 °
Cedar Mill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.03 in
Chance of precipitation18%
Record high100° (1987)
Record low46° (1964)
Tue, 0178° / 55°0.04
78 °
Cedar Mill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.04 in
Chance of precipitation17%
Record high95° (1988)
Record low46° (1973)
Wed, 0279° / 55°0.04
79 °
Cedar Mill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.04 in
Chance of precipitation13%
Record high102° (1988)
Record low44° (1960)
Thu, 0378° / 56°0.04
78 °
Cedar Mill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low56°
Average precipitation0.04 in
Chance of precipitation18%
Record high96° (2017)
Record low45° (1964)
Fri, 0479° / 55°0.03
79 °
Cedar Mill, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.03 in
Chance of precipitation15%
Record high100° (2017)
Record low47° (2015)
Sat, 0578° / 55°0.03
78 °
Cedar Mill, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.03 in
Chance of precipitation15%
Record high99° (2024)
Record low45° (1969)
Sun, 0678° / 55°0.06
78 °
Cedar Mill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.06 in
Chance of precipitation18%
Record high96° (2024)
Record low46° (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 Cedar Mill, OR 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 Cedar Mill, OR 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.