Monthly outlook for Duncan, OR: average high 58.9°, average low 41.8°. That is 1.9° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 5 days and 1.2 inches. The warmest day looks like 16 October (73.1°), the coolest 13 October (28.2°).
58.9°/41.8°
Average high / low
+1.9°
Above normal
4 / 5
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
59.3°
56.8°
+1.4°
22 October – 31 October
58°
51.6°
+3.6°
1 November – 10 November
at normal
47.2°
—
October records over 66 years
82°2 October 1975All-time high
3°30 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Meacham (7 mi).
Tue, 1357° / 28°0
57 °
Duncan, Tuesday, 13 October
Clear. High 57°, low 28°.
Pressure30.18 inHg
Wind4.6 mph NW
Humidity45%
Visibility6.2 mi
Dew point26°
Wed, 1461° / 43°0
61 °
Duncan, Wednesday, 14 October
Partly cloudy. High 61°, low 43°.
Pressure30.24 inHg
Wind5.5 mph NW
Humidity39%
Visibility6.2 mi
Dew point32°
Thu, 1571° / 41°0
71 °
Duncan, Thursday, 15 October
Clear. High 71°, low 41°.
Pressure30.39 inHg
Wind1.9 mph E
Humidity32%
Visibility6.2 mi
Dew point33°
Fri, 1673° / 60°0
73 °
Duncan, Friday, 16 October
Clear. High 73°, low 60°.
Pressure30.21 inHg
Wind18.2 mph SE
Humidity30%
Visibility—
Dew point35°
Sat, 1768° / 53°0
68 °
Duncan, Saturday, 17 October
Partly cloudy. High 68°, low 53°.
Pressure30.03 inHg
Wind12 mph NW
Humidity41%
Visibility—
Dew point40°
Sun, 1863° / 50°0
63 °
Duncan, Sunday, 18 October
Overcast. High 63°, low 50°.
Pressure30.06 inHg
Wind7.9 mph NW
Humidity55%
Visibility—
Dew point42°
Mon, 1956° / 43°0.08
56 °
Duncan, Monday, 19 October
Light rain. High 56°, low 43°.
Pressure29.85 inHg
Wind10.7 mph W
Humidity49%
Visibility—
Dew point36°
Tue, 2045° / 40°0.27
45 °
Duncan, Tuesday, 20 October
Snow. High 45°, low 40°.
Pressure30.09 inHg
Wind19.1 mph W
Humidity87%
Visibility—
Dew point37°
Wed, 2156° / 36°0
56 °
Duncan, Wednesday, 21 October
Overcast. High 56°, low 36°.
Pressure30.21 inHg
Wind6.3 mph SE
Humidity50%
Visibility—
Dew point29°
Thu, 2261° / 42°0
61 °
Duncan, Thursday, 22 October
Overcast. High 61°, low 42°.
Pressure30.21 inHg
Wind9.8 mph SE
Humidity40%
Visibility—
Dew point30°
Fri, 2361° / 43°0.19
61 °
Duncan, Friday, 23 October
Rain. High 61°, low 43°.
Pressure29.88 inHg
Wind7.9 mph SE
Humidity33%
Visibility—
Dew point28°
Sat, 2450° / 39°0.17
50 °
Duncan, Saturday, 24 October
Rain. High 50°, low 39°.
Pressure30.03 inHg
Wind5.5 mph NW
Humidity67%
Visibility—
Dew point35°
Sun, 2558° / 38°0
58 °
Duncan, Sunday, 25 October
Overcast. High 58°, low 38°.
Pressure30.03 inHg
Wind5.2 mph SE
Humidity44%
Visibility—
Dew point29°
Mon, 2660° / 40°0
60 °
Duncan, Monday, 26 October
Mostly clear. High 60°, low 40°.
Pressure30.12 inHg
Wind4.2 mph NW
Humidity43%
Visibility—
Dew point31°
Tue, 2758° / 42°0
58 °
Duncan, Tuesday, 27 October
Clear. High 58°, low 42°.
Pressure29.91 inHg
Wind5.9 mph SE
Humidity35%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2850° / 34°0.11
50 °
Duncan, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.11 in
Chance of precipitation48%
Record high69° (1987)
Record low9° (1971)
Thu, 2949° / 33°0.12
49 °
Duncan, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.12 in
Chance of precipitation45%
Record high67° (1962)
Record low6° (1971)
Fri, 3049° / 33°0.07
49 °
Duncan, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.07 in
Chance of precipitation37%
Record high68° (2008)
Record low3° (1991)
Sat, 3148° / 34°0.13
48 °
Duncan, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low34°
Average precipitation0.13 in
Chance of precipitation48%
Record high69° (1988)
Record low14° (2002)
Sun, 0148° / 33°0.16
48 °
Duncan, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.16 in
Chance of precipitation47%
Record high69° (1965)
Record low10° (1984)
Mon, 0248° / 32°0.09
48 °
Duncan, Monday, 2 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.09 in
Chance of precipitation40%
Record high64° (1981)
Record low6° (1991)
Tue, 0349° / 33°0.06
49 °
Duncan, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.06 in
Chance of precipitation30%
Record high64° (2020)
Record low5° (1973)
Wed, 0449° / 34°0.15
49 °
Duncan, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low34°
Average precipitation0.15 in
Chance of precipitation50%
Record high65° (1980)
Record low18° (1973)
Thu, 0548° / 33°0.12
48 °
Duncan, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low33°
Average precipitation0.12 in
Chance of precipitation43%
Record high65° (2010)
Record low-3° (1971)
Fri, 0647° / 33°0.16
47 °
Duncan, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low33°
Average precipitation0.16 in
Chance of precipitation55%
Record high66° (2012)
Record low8° (1971)
Sat, 0746° / 32°0.17
46 °
Duncan, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.17 in
Chance of precipitation53%
Record high65° (1999)
Record low16° (1994)
Sun, 0846° / 32°0.12
46 °
Duncan, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.12 in
Chance of precipitation43%
Record high66° (2016)
Record low9° (1994)
Mon, 0945° / 32°0.11
45 °
Duncan, Monday, 9 November
Climate normal for this date — 60-year average.
Average high45°
Average low32°
Average precipitation0.11 in
Chance of precipitation52%
Record high62° (2016)
Record low15° (1986)
Tue, 1044° / 31°0.09
44 °
Duncan, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low31°
Average precipitation0.09 in
Chance of precipitation45%
Record high64° (2016)
Record low-11° (1986)
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 Duncan, 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 Duncan, 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.