Monthly outlook for Duncan, OR: average high 62°, average low 43.1°. That is 3.4° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.2 inches. The warmest day looks like 17 October (73.8°), the coolest 12 October (32.6°).
62°/43.1°
Average high / low
+3.4°
Above normal
1 / 5
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
62°
56.9°
+2.8°
21 October – 30 October
62°
52.3°
+5.4°
31 October – 9 November
at normal
47.6°
—
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).
Mon, 1249° / 33°0
49 °
Duncan, Monday, 12 October
Overcast. High 49°, low 33°.
Pressure30.06 inHg
Wind3.6 mph NW
Humidity63%
Visibility6.2 mi
Dew point30°
Tue, 1357° / 37°0
57 °
Duncan, Tuesday, 13 October
Clear. High 57°, low 37°.
Pressure30.15 inHg
Wind5.2 mph NW
Humidity43%
Visibility6.2 mi
Dew point25°
Wed, 1462° / 44°0
62 °
Duncan, Wednesday, 14 October
Overcast. High 62°, low 44°.
Pressure30.24 inHg
Wind5.1 mph NW
Humidity38%
Visibility6.2 mi
Dew point30°
Thu, 1570° / 44°0
70 °
Duncan, Thursday, 15 October
Clear. High 70°, low 44°.
Pressure30.39 inHg
Wind13 mph SE
Humidity35%
Visibility—
Dew point34°
Fri, 1674° / 58°0
74 °
Duncan, Friday, 16 October
Clear. High 74°, low 58°.
Pressure30.21 inHg
Wind20.3 mph SE
Humidity32%
Visibility—
Dew point37°
Sat, 1774° / 53°0
74 °
Duncan, Saturday, 17 October
Overcast. High 74°, low 53°.
Pressure30.09 inHg
Wind9.8 mph W
Humidity28%
Visibility—
Dew point34°
Sun, 1871° / 50°0
71 °
Duncan, Sunday, 18 October
Mostly clear. High 71°, low 50°.
Pressure30.00 inHg
Wind5.2 mph W
Humidity39%
Visibility—
Dew point39°
Mon, 1959° / 42°0.06
59 °
Duncan, Monday, 19 October
Light rain. High 59°, low 42°.
Pressure30.00 inHg
Wind10 mph W
Humidity48%
Visibility—
Dew point38°
Tue, 2059° / 38°0
59 °
Duncan, Tuesday, 20 October
Clear. High 59°, low 38°.
Pressure30.15 inHg
Wind5.5 mph W
Humidity46%
Visibility—
Dew point30°
Wed, 2159° / 42°0
59 °
Duncan, Wednesday, 21 October
Overcast. High 59°, low 42°.
Pressure30.09 inHg
Wind5.2 mph NW
Humidity45%
Visibility—
Dew point32°
Thu, 2261° / 40°0
61 °
Duncan, Thursday, 22 October
Overcast. High 61°, low 40°.
Pressure30.12 inHg
Wind7 mph SE
Humidity38%
Visibility—
Dew point28°
Fri, 2360° / 45°0
60 °
Duncan, Friday, 23 October
Overcast. High 60°, low 45°.
Pressure30.09 inHg
Wind10.4 mph NW
Humidity29%
Visibility—
Dew point25°
Sat, 2460° / 43°0
60 °
Duncan, Saturday, 24 October
Overcast. High 60°, low 43°.
Pressure30.15 inHg
Wind6.8 mph NW
Humidity47%
Visibility—
Dew point36°
Sun, 2564° / 42°0
64 °
Duncan, Sunday, 25 October
Overcast. High 64°, low 42°.
Pressure30.39 inHg
Wind4.3 mph NW
Humidity42%
Visibility—
Dew point32°
Mon, 2669° / 45°0
69 °
Duncan, Monday, 26 October
Overcast. High 69°, low 45°.
Pressure30.18 inHg
Wind6.1 mph NW
Humidity18%
Visibility—
Dew point18°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2751° / 34°0.09
51 °
Duncan, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low34°
Average precipitation0.09 in
Chance of precipitation42%
Record high69° (1987)
Record low10° (1970)
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)
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.