Monthly outlook for Treharne, OR: average high 57.2°, average low 41.7°. That is 1.6° above the climate normal for October. Precipitation is expected on 7 days (about 2.8 inches), against a normal of 9 days and 3.7 inches. The warmest day looks like 7 November (70.1°), the coolest 24 October (32.1°).
57.2°/41.7°
Average high / low
+1.6°
Above normal
7 / 9
Wet days / normal
2.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
53.6°
55.2°
-0.9°
2 November – 11 November
63.2°
52.4°
+6°
12 November – 21 November
at normal
49.3°
—
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).
Sat, 2458° / 32°0
58 °
Treharne, Saturday, 24 October
Overcast. High 58°, low 32°.
Pressure30.15 inHg
Wind0.4 mph SW
Humidity59%
Visibility6.2 mi
Dew point40°
Sun, 2550° / 34°0.41
50 °
Treharne, Sunday, 25 October
Rain. High 50°, low 34°.
Pressure29.94 inHg
Wind9.4 mph SE
Humidity98%
Visibility1.8 mi
Dew point46°
Mon, 2653° / 46°0.31
53 °
Treharne, Monday, 26 October
Rain. High 53°, low 46°.
Pressure30.00 inHg
Wind10.2 mph SE
Humidity95%
Visibility2.8 mi
Dew point48°
Tue, 2751° / 47°0.28
51 °
Treharne, Tuesday, 27 October
Rain. High 51°, low 47°.
Pressure30.06 inHg
Wind4.1 mph SE
Humidity96%
Visibility1.4 mi
Dew point49°
Wed, 2850° / 41°0.14
50 °
Treharne, Wednesday, 28 October
Light rain. High 50°, low 41°.
Pressure30.00 inHg
Wind7.9 mph SW
Humidity93%
Visibility—
Dew point46°
Thu, 2948° / 41°0.09
48 °
Treharne, Thursday, 29 October
Light rain. High 48°, low 41°.
Pressure29.85 inHg
Wind9 mph SE
Humidity93%
Visibility—
Dew point42°
Fri, 3055° / 36°0
55 °
Treharne, Friday, 30 October
Clear. High 55°, low 36°.
Pressure30.12 inHg
Wind5 mph NE
Humidity71%
Visibility—
Dew point39°
Sat, 3155° / 34°0
55 °
Treharne, Saturday, 31 October
Clear. High 55°, low 34°.
Pressure30.24 inHg
Wind4.8 mph N
Humidity60%
Visibility—
Dew point34°
Sun, 0160° / 33°0
60 °
Treharne, Sunday, 1 November
Clear. High 60°, low 33°.
Pressure30.36 inHg
Wind3.7 mph NE
Humidity43%
Visibility—
Dew point27°
Mon, 0263° / 38°0
63 °
Treharne, Monday, 2 November
Clear. High 63°, low 38°.
Pressure30.24 inHg
Wind4.7 mph SE
Humidity36%
Visibility—
Dew point26°
Tue, 0367° / 42°0
67 °
Treharne, Tuesday, 3 November
Clear. High 67°, low 42°.
Pressure30.09 inHg
Wind4.5 mph SE
Humidity33%
Visibility—
Dew point27°
Wed, 0455° / 45°0.29
55 °
Treharne, Wednesday, 4 November
Rain. High 55°, low 45°.
Pressure29.83 inHg
Wind5.9 mph SE
Humidity47%
Visibility—
Dew point34°
Thu, 0556° / 50°1.25
56 °
Treharne, Thursday, 5 November
Rain. High 56°, low 50°.
Pressure29.85 inHg
Wind7.2 mph S
Humidity96%
Visibility—
Dew point54°
Fri, 0668° / 53°0.02
68 °
Treharne, Friday, 6 November
Light rain. High 68°, low 53°.
Pressure30.15 inHg
Wind4.7 mph SE
Humidity92%
Visibility—
Dew point56°
Sat, 0770° / 53°0
70 °
Treharne, Saturday, 7 November
Clear. High 70°, low 53°.
Pressure30.18 inHg
Wind4.8 mph SE
Humidity79%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0852° / 40°0.21
52 °
Treharne, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high52°
Average low40°
Average precipitation0.21 in
Chance of precipitation53%
Record high66° (1976)
Record low31° (1977)
Mon, 0951° / 41°0.22
51 °
Treharne, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.22 in
Chance of precipitation62%
Record high64° (1996)
Record low27° (2020)
Tue, 1051° / 40°0.2
51 °
Treharne, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.2 in
Chance of precipitation50%
Record high65° (2016)
Record low29° (1978)
Wed, 1152° / 41°0.26
52 °
Treharne, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.26 in
Chance of precipitation63%
Record high62° (1990)
Record low27° (1978)
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)
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.