Monthly outlook for Trenholm, OR: average high 51.3°, average low 42.6°. That is 0.6° above the climate normal for November. Precipitation is expected on 9 days (about 3.3 inches), against a normal of 10 days and 4.2 inches. The warmest day looks like 7 November (61.8°), the coolest 21 November (34.4°).
51.3°/42.6°
Average high / low
+0.6°
Above normal
9 / 10
Wet days / normal
3.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
6 November – 15 November
55.3°
51.3°
+2.2°
16 November – 25 November
44.5°
47.4°
-1.6°
26 November – 5 December
at normal
45.4°
—
November records over 66 years
68.4°4 November 1980All-time high
6.3°30 November 1985All-time low
Climate normals and records are computed from the nearest reference point — Vernonia (11 mi).
Sat, 0762° / 50°0.26
62 °
Trenholm, Saturday, 7 November
Rain. High 62°, low 50°.
Pressure29.91 inHg
Wind9.1 mph S
Humidity83%
Visibility6.2 mi
Dew point52°
Sun, 0855° / 43°0.06
55 °
Trenholm, Sunday, 8 November
Light rain. High 55°, low 43°.
Pressure30.15 inHg
Wind6 mph SW
Humidity68%
Visibility6.2 mi
Dew point45°
Mon, 0955° / 43°0.18
55 °
Trenholm, Monday, 9 November
Rain. High 55°, low 43°.
Pressure30.00 inHg
Wind9 mph SE
Humidity75%
Visibility6.2 mi
Dew point46°
Tue, 1057° / 52°0.55
57 °
Trenholm, Tuesday, 10 November
Rain. High 57°, low 52°.
Pressure30.09 inHg
Wind10.5 mph SE
Humidity99%
Visibility—
Dew point54°
Wed, 1160° / 50°0
60 °
Trenholm, Wednesday, 11 November
Overcast. High 60°, low 50°.
Pressure30.00 inHg
Wind8.1 mph SE
Humidity96%
Visibility—
Dew point52°
Thu, 1258° / 47°0
58 °
Trenholm, Thursday, 12 November
Overcast. High 58°, low 47°.
Pressure30.00 inHg
Wind5.1 mph SE
Humidity60%
Visibility—
Dew point40°
Fri, 1352° / 43°0.65
52 °
Trenholm, Friday, 13 November
Rain. High 52°, low 43°.
Pressure29.77 inHg
Wind12.2 mph SE
Humidity76%
Visibility—
Dew point42°
Sat, 1450° / 45°0.4
50 °
Trenholm, Saturday, 14 November
Rain. High 50°, low 45°.
Pressure29.80 inHg
Wind10.8 mph S
Humidity90%
Visibility—
Dew point46°
Sun, 1549° / 38°0.03
49 °
Trenholm, Sunday, 15 November
Light rain. High 49°, low 38°.
Pressure30.09 inHg
Wind5.1 mph SE
Humidity93%
Visibility—
Dew point42°
Mon, 1641° / 39°0.46
41 °
Trenholm, Monday, 16 November
Rain. High 41°, low 39°.
Pressure29.97 inHg
Wind6.8 mph SE
Humidity96%
Visibility—
Dew point39°
Tue, 1743° / 40°0.02
43 °
Trenholm, Tuesday, 17 November
Light rain. High 43°, low 40°.
Pressure30.15 inHg
Wind5.5 mph SE
Humidity89%
Visibility—
Dew point38°
Wed, 1844° / 41°0.1
44 °
Trenholm, Wednesday, 18 November
Light rain. High 44°, low 41°.
Pressure30.24 inHg
Wind7 mph SE
Humidity90%
Visibility—
Dew point40°
Thu, 1948° / 36°0
48 °
Trenholm, Thursday, 19 November
Partly cloudy. High 48°, low 36°.
Pressure30.30 inHg
Wind3 mph SE
Humidity82%
Visibility—
Dew point38°
Fri, 2044° / 38°0
44 °
Trenholm, Friday, 20 November
Overcast. High 44°, low 38°.
Pressure30.18 inHg
Wind3.9 mph SE
Humidity74%
Visibility—
Dew point33°
Sat, 2147° / 34°0
47 °
Trenholm, Saturday, 21 November
Light rain. High 47°, low 34°.
Pressure30.21 inHg
Wind3.2 mph NE
Humidity79%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2246° / 36°0.31
46 °
Trenholm, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.31 in
Chance of precipitation60%
Record high61° (2017)
Record low14° (1985)
Mon, 2346° / 37°0.31
46 °
Trenholm, Monday, 23 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.31 in
Chance of precipitation67%
Record high59° (2017)
Record low8° (1985)
Tue, 2446° / 37°0.37
46 °
Trenholm, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.37 in
Chance of precipitation63%
Record high56° (1995)
Record low8° (1985)
Wed, 2546° / 37°0.34
46 °
Trenholm, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.34 in
Chance of precipitation65%
Record high57° (1977)
Record low6° (1985)
Thu, 2646° / 36°0.19
46 °
Trenholm, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.19 in
Chance of precipitation57%
Record high57° (2014)
Record low23° (1985)
Fri, 2746° / 37°0.27
46 °
Trenholm, Friday, 27 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.27 in
Chance of precipitation65%
Record high55° (2021)
Record low21° (1985)
Sat, 2846° / 36°0.2
46 °
Trenholm, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.2 in
Chance of precipitation50%
Record high56° (2021)
Record low21° (1985)
Sun, 2945° / 36°0.23
45 °
Trenholm, Sunday, 29 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.23 in
Chance of precipitation53%
Record high55° (1995)
Record low13° (1985)
Mon, 3045° / 36°0.32
45 °
Trenholm, Monday, 30 November
Climate normal for this date — 60-year average.
Average high45°
Average low36°
Average precipitation0.32 in
Chance of precipitation62%
Record high58° (2008)
Record low6° (1985)
Tue, 0145° / 37°0.3
45 °
Trenholm, Tuesday, 1 December
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.3 in
Chance of precipitation65%
Record high57° (2021)
Record low19° (1985)
Wed, 0246° / 37°0.38
46 °
Trenholm, Wednesday, 2 December
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.38 in
Chance of precipitation65%
Record high54° (1975)
Record low20° (1985)
Thu, 0346° / 36°0.33
46 °
Trenholm, Thursday, 3 December
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.33 in
Chance of precipitation55%
Record high56° (1979)
Record low24° (1992)
Fri, 0445° / 35°0.31
45 °
Trenholm, Friday, 4 December
Climate normal for this date — 60-year average.
Average high45°
Average low35°
Average precipitation0.31 in
Chance of precipitation57%
Record high56° (2023)
Record low21° (1992)
Sat, 0544° / 35°0.25
44 °
Trenholm, Saturday, 5 December
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.25 in
Chance of precipitation50%
Record high56° (2023)
Record low18° (1992)
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 Trenholm, 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 Trenholm, 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.