Monthly outlook for West Slope, OR: average high 47.8°, average low 40.1°. That is 0.4° below the climate normal for November. Precipitation is expected on 8 days (about 2.0 inches), against a normal of 10 days and 3.9 inches. The warmest day looks like 14 November (59.6°), the coolest 26 November (28.5°).
47.8°/40.1°
Average high / low
−0.4°
Below normal
8 / 10
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 November – 21 November
51.5°
49.7°
+1°
22 November – 1 December
41.6°
46.2°
-2.6°
2 December – 11 December
at normal
44.7°
—
November records over 66 years
66.9°1 November 1962All-time high
5°23 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Cedar Mill (3 mi).
Fri, 1355° / 51°0.26
55 °
West Slope, Friday, 13 November
Rain. High 55°, low 51°.
Pressure29.32 inHg
Wind8.7 mph SE
Humidity90%
Visibility6.2 mi
Dew point51°
Sat, 1460° / 50°0.12
60 °
West Slope, Saturday, 14 November
Rain. High 60°, low 50°.
Pressure29.77 inHg
Wind11.8 mph S
Humidity73%
Visibility6.2 mi
Dew point47°
Sun, 1554° / 46°0.31
54 °
West Slope, Sunday, 15 November
Rain. High 54°, low 46°.
Pressure29.85 inHg
Wind9.6 mph S
Humidity80%
Visibility2.1 mi
Dew point47°
Mon, 1653° / 42°0.09
53 °
West Slope, Monday, 16 November
Light rain. High 53°, low 42°.
Pressure30.15 inHg
Wind12 mph S
Humidity78%
Visibility—
Dew point42°
Tue, 1750° / 39°0
50 °
West Slope, Tuesday, 17 November
Overcast. High 50°, low 39°.
Pressure30.15 inHg
Wind10.5 mph E
Humidity91%
Visibility—
Dew point41°
Wed, 1845° / 44°0.57
45 °
West Slope, Wednesday, 18 November
Rain. High 45°, low 44°.
Pressure29.83 inHg
Wind9.7 mph E
Humidity89%
Visibility—
Dew point41°
Thu, 1944° / 40°0.19
44 °
West Slope, Thursday, 19 November
Light rain. High 44°, low 40°.
Pressure30.15 inHg
Wind4.5 mph S
Humidity88%
Visibility—
Dew point40°
Fri, 2049° / 37°0
49 °
West Slope, Friday, 20 November
Partly cloudy. High 49°, low 37°.
Pressure30.03 inHg
Wind8.1 mph NE
Humidity70%
Visibility—
Dew point33°
Sat, 2149° / 38°0
49 °
West Slope, Saturday, 21 November
Overcast. High 49°, low 38°.
Pressure30.15 inHg
Wind2.5 mph N
Humidity67%
Visibility—
Dew point32°
Sun, 2246° / 37°0
46 °
West Slope, Sunday, 22 November
Partly cloudy. High 46°, low 37°.
Pressure30.27 inHg
Wind8.1 mph S
Humidity63%
Visibility—
Dew point29°
Mon, 2346° / 42°0.14
46 °
West Slope, Monday, 23 November
Light rain. High 46°, low 42°.
Pressure30.06 inHg
Wind12.6 mph S
Humidity88%
Visibility—
Dew point40°
Tue, 2443° / 36°0.37
43 °
West Slope, Tuesday, 24 November
Light rain. High 43°, low 36°.
Pressure30.06 inHg
Wind10.1 mph NE
Humidity91%
Visibility—
Dew point39°
Wed, 2539° / 33°0
39 °
West Slope, Wednesday, 25 November
Overcast. High 39°, low 33°.
Pressure30.06 inHg
Wind13.2 mph NE
Humidity42%
Visibility—
Dew point15°
Thu, 2637° / 29°0
37 °
West Slope, Thursday, 26 November
Clear. High 37°, low 29°.
Pressure30.47 inHg
Wind4.6 mph NE
Humidity43%
Visibility—
Dew point12°
Fri, 2738° / 29°0
38 °
West Slope, Friday, 27 November
Clear. High 38°, low 29°.
Pressure30.33 inHg
Wind7.7 mph NE
Humidity32%
Visibility—
Dew point5°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2846° / 35°0.19
46 °
West Slope, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.19 in
Chance of precipitation50%
Record high58° (2021)
Record low20° (1985)
Sun, 2946° / 35°0.19
46 °
West Slope, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.19 in
Chance of precipitation50%
Record high58° (2021)
Record low16° (1985)
Mon, 3046° / 35°0.26
46 °
West Slope, Monday, 30 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.26 in
Chance of precipitation62%
Record high58° (2008)
Record low11° (1985)
Tue, 0145° / 36°0.26
45 °
West Slope, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.26 in
Chance of precipitation62%
Record high57° (2021)
Record low19° (1985)
Wed, 0246° / 36°0.35
46 °
West Slope, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.35 in
Chance of precipitation63%
Record high55° (1975)
Record low18° (1985)
Thu, 0346° / 36°0.28
46 °
West Slope, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.28 in
Chance of precipitation60%
Record high57° (2023)
Record low24° (1992)
Fri, 0445° / 35°0.32
45 °
West Slope, Friday, 4 December
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.32 in
Chance of precipitation55%
Record high60° (2023)
Record low21° (1994)
Sat, 0545° / 34°0.23
45 °
West Slope, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.23 in
Chance of precipitation48%
Record high60° (2023)
Record low21° (1972)
Sun, 0644° / 35°0.27
44 °
West Slope, Sunday, 6 December
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.27 in
Chance of precipitation60%
Record high57° (2023)
Record low20° (1972)
Mon, 0744° / 35°0.23
44 °
West Slope, Monday, 7 December
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.23 in
Chance of precipitation48%
Record high56° (2025)
Record low9° (1972)
Tue, 0844° / 34°0.2
44 °
West Slope, Tuesday, 8 December
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.2 in
Chance of precipitation50%
Record high56° (2025)
Record low2° (1972)
Wed, 0944° / 34°0.3
44 °
West Slope, Wednesday, 9 December
Climate normal for this date — 60-year average.
Average high44°
Average low34°
Average precipitation0.3 in
Chance of precipitation67%
Record high55° (2025)
Record low6° (1972)
Thu, 1045° / 35°0.31
45 °
West Slope, Thursday, 10 December
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.31 in
Chance of precipitation68%
Record high59° (2025)
Record low3° (1972)
Fri, 1145° / 35°0.28
45 °
West Slope, Friday, 11 December
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.28 in
Chance of precipitation62%
Record high59° (2025)
Record low12° (1972)
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 Slope, 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 Slope, 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.