Monthly outlook for West Linn, OR: average high 89.8°, average low 58.7°. 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 24 August (101.4°), the coolest 10 August (51.7°).
89.8°/58.7°
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
9 August – 18 August
86.9°
82.6°
+2.4°
19 August – 28 August
94.6°
79.9°
+8.2°
29 August – 7 September
at normal
78.3°
—
August records over 66 years
105.3°14 August 2023All-time high
44.2°28 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Johnson City (4 mi).
Mon, 1082° / 52°0
82 °
West Linn, Monday, 10 August
Clear. High 82°, low 52°.
Pressure30.06 inHg
Wind5.1 mph N
Humidity36%
Visibility6.2 mi
Dew point47°
Tue, 1185° / 55°0
85 °
West Linn, Tuesday, 11 August
Clear. High 85°, low 55°.
Pressure30.09 inHg
Wind4.8 mph N
Humidity37%
Visibility6.2 mi
Dew point49°
Wed, 1284° / 57°0
84 °
West Linn, Wednesday, 12 August
Clear. High 84°, low 57°.
Pressure30.00 inHg
Wind5.3 mph N
Humidity42%
Visibility6.2 mi
Dew point51°
Thu, 1388° / 55°0
88 °
West Linn, Thursday, 13 August
Clear. High 88°, low 55°.
Pressure29.80 inHg
Wind7.5 mph NW
Humidity32%
Visibility—
Dew point47°
Fri, 1489° / 59°0
89 °
West Linn, Friday, 14 August
Overcast. High 89°, low 59°.
Pressure29.85 inHg
Wind5.2 mph W
Humidity30%
Visibility—
Dew point48°
Sat, 1588° / 58°0
88 °
West Linn, Saturday, 15 August
Overcast. High 88°, low 58°.
Pressure29.97 inHg
Wind5.8 mph N
Humidity32%
Visibility—
Dew point49°
Sun, 1690° / 60°0
90 °
West Linn, Sunday, 16 August
Partly cloudy. High 90°, low 60°.
Pressure30.03 inHg
Wind6 mph NW
Humidity23%
Visibility—
Dew point43°
Mon, 1788° / 59°0
88 °
West Linn, Monday, 17 August
Clear. High 88°, low 59°.
Pressure30.09 inHg
Wind10.1 mph N
Humidity23%
Visibility—
Dew point40°
Tue, 1890° / 57°0
90 °
West Linn, Tuesday, 18 August
Mostly clear. High 90°, low 57°.
Pressure30.06 inHg
Wind4.8 mph NW
Humidity18%
Visibility—
Dew point35°
Wed, 1994° / 62°0
94 °
West Linn, Wednesday, 19 August
Clear. High 94°, low 62°.
Pressure30.00 inHg
Wind7.3 mph N
Humidity22%
Visibility—
Dew point44°
Thu, 2091° / 62°0
91 °
West Linn, Thursday, 20 August
Clear. High 91°, low 62°.
Pressure30.00 inHg
Wind9.7 mph NW
Humidity27%
Visibility—
Dew point48°
Fri, 2191° / 59°0
91 °
West Linn, Friday, 21 August
Clear. High 91°, low 59°.
Pressure29.94 inHg
Wind8.3 mph N
Humidity26%
Visibility—
Dew point45°
Sat, 2294° / 61°0
94 °
West Linn, Saturday, 22 August
Clear. High 94°, low 61°.
Pressure29.97 inHg
Wind8.3 mph N
Humidity27%
Visibility—
Dew point48°
Sun, 2397° / 62°0
97 °
West Linn, Sunday, 23 August
Clear. High 97°, low 62°.
Pressure30.00 inHg
Wind9.5 mph N
Humidity25%
Visibility—
Dew point48°
Mon, 24101° / 65°0
101 °
West Linn, Monday, 24 August
Partly cloudy. High 101°, low 65°.
Pressure29.83 inHg
Wind4.5 mph N
Humidity19%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 56°0.06
80 °
West Linn, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.06 in
Chance of precipitation13%
Record high95° (1967)
Record low48° (1993)
Wed, 2681° / 56°0.02
81 °
West Linn, 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 low47° (1993)
Thu, 2780° / 57°0.04
80 °
West Linn, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low57°
Average precipitation0.04 in
Chance of precipitation15%
Record high97° (1972)
Record low49° (1962)
Fri, 2881° / 56°0.03
81 °
West Linn, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.03 in
Chance of precipitation8%
Record high100° (1967)
Record low44° (1960)
Sat, 2980° / 57°0.06
80 °
West Linn, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low57°
Average precipitation0.06 in
Chance of precipitation20%
Record high95° (2007)
Record low46° (1965)
Sun, 3077° / 56°0.06
77 °
West Linn, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.06 in
Chance of precipitation28%
Record high97° (1987)
Record low46° (1966)
Mon, 3178° / 56°0.05
78 °
West Linn, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low56°
Average precipitation0.05 in
Chance of precipitation18%
Record high99° (1987)
Record low47° (2006)
Tue, 0178° / 56°0.06
78 °
West Linn, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low56°
Average precipitation0.06 in
Chance of precipitation20%
Record high98° (1988)
Record low43° (1973)
Wed, 0279° / 55°0.06
79 °
West Linn, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.06 in
Chance of precipitation17%
Record high105° (1988)
Record low46° (1960)
Thu, 0378° / 56°0.05
78 °
West Linn, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low56°
Average precipitation0.05 in
Chance of precipitation18%
Record high95° (2017)
Record low45° (1964)
Fri, 0479° / 55°0.03
79 °
West Linn, 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 low45° (2000)
Sat, 0578° / 55°0.05
78 °
West Linn, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.05 in
Chance of precipitation13%
Record high98° (2024)
Record low45° (1969)
Sun, 0678° / 55°0.08
78 °
West Linn, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.08 in
Chance of precipitation18%
Record high95° (2014)
Record low46° (1960)
Mon, 0778° / 55°0.04
78 °
West Linn, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.04 in
Chance of precipitation17%
Record high95° (2011)
Record low44° (1971)
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 West Linn, 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 West Linn, 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.