Monthly outlook for Treharne, OR: average high 54.3°, average low 41.8°. That is 0.7° above the climate normal for October. Precipitation is expected on 10 days (about 4.0 inches), against a normal of 9 days and 3.8 inches. The warmest day looks like 11 November (65.5°), the coolest 1 November (33°).
54.3°/41.8°
Average high / low
+0.7°
Above normal
10 / 9
Wet days / normal
4.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
27 October – 5 November
53.7°
54°
-0.1°
6 November – 15 November
55.3°
51.3°
+2.2°
16 November – 25 November
at normal
47.4°
—
October records over 66 years
88.5°1 October 1987All-time high
27.3°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Vernonia (2 mi).
Wed, 2852° / 44°0.3
52 °
Treharne, Wednesday, 28 October
Rain. High 52°, low 44°.
Pressure30.03 inHg
Wind7 mph SW
Humidity83%
Visibility6.2 mi
Dew point44°
Thu, 2950° / 36°0.04
50 °
Treharne, Thursday, 29 October
Light rain. High 50°, low 36°.
Pressure30.00 inHg
Wind7.5 mph S
Humidity85%
Visibility2.4 mi
Dew point42°
Fri, 3049° / 36°0.22
49 °
Treharne, Friday, 30 October
Light rain. High 49°, low 36°.
Pressure29.94 inHg
Wind5.8 mph S
Humidity83%
Visibility6.2 mi
Dew point42°
Sat, 3152° / 37°0.06
52 °
Treharne, Saturday, 31 October
Light rain. High 52°, low 37°.
Pressure30.00 inHg
Wind5.5 mph SE
Humidity82%
Visibility6.2 mi
Dew point43°
Sun, 0151° / 33°0
51 °
Treharne, Sunday, 1 November
Overcast. High 51°, low 33°.
Pressure30.33 inHg
Wind2.7 mph SE
Humidity92%
Visibility—
Dew point40°
Mon, 0254° / 35°0
54 °
Treharne, Monday, 2 November
Overcast. High 54°, low 35°.
Pressure30.18 inHg
Wind3.8 mph SE
Humidity57%
Visibility—
Dew point32°
Tue, 0356° / 42°0
56 °
Treharne, Tuesday, 3 November
Overcast. High 56°, low 42°.
Pressure30.03 inHg
Wind4.7 mph SE
Humidity48%
Visibility—
Dew point32°
Wed, 0460° / 40°0
60 °
Treharne, Wednesday, 4 November
Partly cloudy. High 60°, low 40°.
Pressure30.03 inHg
Wind4 mph SE
Humidity47%
Visibility—
Dew point32°
Thu, 0559° / 42°0
59 °
Treharne, Thursday, 5 November
Overcast. High 59°, low 42°.
Pressure30.00 inHg
Wind5.4 mph SE
Humidity58%
Visibility—
Dew point37°
Fri, 0655° / 46°0.93
55 °
Treharne, Friday, 6 November
Rain. High 55°, low 46°.
Pressure29.88 inHg
Wind9.2 mph S
Humidity96%
Visibility—
Dew point45°
Sat, 0758° / 46°0.35
58 °
Treharne, Saturday, 7 November
Rain. High 58°, low 46°.
Pressure29.85 inHg
Wind6.2 mph S
Humidity87%
Visibility—
Dew point50°
Sun, 0849° / 43°0.34
49 °
Treharne, Sunday, 8 November
Rain. High 49°, low 43°.
Pressure29.77 inHg
Wind4.1 mph SE
Humidity99%
Visibility—
Dew point48°
Mon, 0947° / 42°1.06
47 °
Treharne, Monday, 9 November
Rain. High 47°, low 42°.
Pressure30.15 inHg
Wind12.2 mph SE
Humidity97%
Visibility—
Dew point45°
Tue, 1057° / 48°0.56
57 °
Treharne, Tuesday, 10 November
Rain. High 57°, low 48°.
Pressure30.24 inHg
Wind5.1 mph SE
Humidity99%
Visibility—
Dew point52°
Wed, 1165° / 52°0
65 °
Treharne, Wednesday, 11 November
Overcast. High 65°, low 52°.
Pressure30.24 inHg
Wind3 mph NE
Humidity87%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 1251° / 41°0.25
51 °
Treharne, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.25 in
Chance of precipitation62%
Record high62° (1974)
Record low28° (1985)
Fri, 1351° / 41°0.31
51 °
Treharne, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.31 in
Chance of precipitation62%
Record high63° (1969)
Record low26° (1985)
Sat, 1451° / 40°0.23
51 °
Treharne, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.23 in
Chance of precipitation43%
Record high65° (1999)
Record low26° (1978)
Sun, 1550° / 40°0.26
50 °
Treharne, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.26 in
Chance of precipitation60%
Record high60° (2008)
Record low26° (2014)
Mon, 1649° / 40°0.22
49 °
Treharne, Monday, 16 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.22 in
Chance of precipitation73%
Record high61° (1976)
Record low27° (2014)
Tue, 1749° / 39°0.28
49 °
Treharne, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.28 in
Chance of precipitation70%
Record high61° (2008)
Record low28° (1961)
Wed, 1848° / 39°0.18
48 °
Treharne, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.18 in
Chance of precipitation57%
Record high59° (1989)
Record low26° (1985)
Thu, 1948° / 39°0.41
48 °
Treharne, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.41 in
Chance of precipitation65%
Record high58° (1968)
Record low28° (1977)
Fri, 2048° / 38°0.3
48 °
Treharne, Friday, 20 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.3 in
Chance of precipitation58%
Record high63° (2002)
Record low26° (1978)
Sat, 2147° / 37°0.29
47 °
Treharne, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high47°
Average low37°
Average precipitation0.29 in
Chance of precipitation58%
Record high59° (2002)
Record low18° (1978)
Sun, 2246° / 36°0.31
46 °
Treharne, 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 °
Treharne, 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 °
Treharne, 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 °
Treharne, 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)
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 Treharne, 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 Treharne, 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.