Monthly outlook for Treharne, OR: average high 53.4°, average low 41.4°. That is 0.7° above the climate normal for October. Precipitation is expected on 10 days (about 5.0 inches), against a normal of 9 days and 4.0 inches. The warmest day looks like 7 November (62.2°), the coolest 31 October (35.2°).
53.4°/41.4°
Average high / low
+0.7°
Above normal
10 / 9
Wet days / normal
5.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
31 October – 9 November
55.2°
52.8°
+1.3°
10 November – 19 November
50.5°
50°
+0.2°
20 November – 29 November
at normal
46.4°
—
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).
Sun, 0152° / 37°0
52 °
Treharne, Sunday, 1 November
Clear. High 52°, low 37°.
Pressure30.09 inHg
Wind0.8 mph E
Humidity73%
Visibility5.0 mi
Dew point41°
Mon, 0253° / 38°0
53 °
Treharne, Monday, 2 November
Overcast. High 53°, low 38°.
Pressure30.18 inHg
Wind3.4 mph SE
Humidity68%
Visibility6.2 mi
Dew point41°
Tue, 0360° / 40°0
60 °
Treharne, Tuesday, 3 November
Overcast. High 60°, low 40°.
Pressure30.03 inHg
Wind0.6 mph SE
Humidity53%
Visibility6.2 mi
Dew point41°
Wed, 0456° / 36°0.1
56 °
Treharne, Wednesday, 4 November
Light rain. High 56°, low 36°.
Pressure30.09 inHg
Wind3.9 mph SE
Humidity79%
Visibility6.2 mi
Dew point45°
Thu, 0556° / 45°0
56 °
Treharne, Thursday, 5 November
Overcast. High 56°, low 45°.
Pressure30.21 inHg
Wind6.2 mph S
Humidity94%
Visibility—
Dew point48°
Fri, 0652° / 47°0.07
52 °
Treharne, Friday, 6 November
Light rain. High 52°, low 47°.
Pressure30.12 inHg
Wind10.2 mph SE
Humidity96%
Visibility—
Dew point49°
Sat, 0762° / 45°0.1
62 °
Treharne, Saturday, 7 November
Light rain. High 62°, low 45°.
Pressure29.97 inHg
Wind6.8 mph NW
Humidity80%
Visibility—
Dew point47°
Sun, 0854° / 42°0.2
54 °
Treharne, Sunday, 8 November
Rain. High 54°, low 42°.
Pressure30.12 inHg
Wind3.8 mph N
Humidity90%
Visibility—
Dew point48°
Mon, 0954° / 40°0.22
54 °
Treharne, Monday, 9 November
Rain. High 54°, low 40°.
Pressure29.97 inHg
Wind7.8 mph SE
Humidity73%
Visibility—
Dew point40°
Tue, 1053° / 46°0.6
53 °
Treharne, Tuesday, 10 November
Rain. High 53°, low 46°.
Pressure29.85 inHg
Wind11.3 mph SE
Humidity90%
Visibility—
Dew point48°
Wed, 1152° / 47°1.43
52 °
Treharne, Wednesday, 11 November
Rain. High 52°, low 47°.
Pressure29.74 inHg
Wind12.4 mph SW
Humidity91%
Visibility—
Dew point45°
Thu, 1249° / 43°1.59
49 °
Treharne, Thursday, 12 November
Heavy rain. High 49°, low 43°.
Pressure29.59 inHg
Wind14 mph SW
Humidity99%
Visibility—
Dew point46°
Fri, 1351° / 44°0.59
51 °
Treharne, Friday, 13 November
Rain. High 51°, low 44°.
Pressure29.50 inHg
Wind16.7 mph SE
Humidity97%
Visibility—
Dew point43°
Sat, 1451° / 39°0
51 °
Treharne, Saturday, 14 November
Overcast. High 51°, low 39°.
Pressure29.88 inHg
Wind3.5 mph NE
Humidity85%
Visibility—
Dew point43°
Sun, 1548° / 38°0.14
48 °
Treharne, Sunday, 15 November
Light rain. High 48°, low 38°.
Pressure29.85 inHg
Wind9.1 mph SE
Humidity93%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Thu, 2646° / 36°0.19
46 °
Treharne, 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 °
Treharne, 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 °
Treharne, 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 °
Treharne, 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)
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.