As of 16:34 PDT

Weather in Duncan, WA

64°Current weather

Duncan, Friday, 9 October, 16:34

Partly cloudy. Feels like 63°. High 66°, low 41°.

Pressure29.62 inHg
Wind25.3 mph SW
Humidity47%
Visibility6.2 mi
Dew point44°

Monthly outlook for Duncan, WA: average high 60.6°, average low 40.4°. That is 0.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.4 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 19 October (70.8°), the coolest 10 October (31.4°).

60.6°/40.4°
Average high / low
+0.7°
Above normal
1 / 4
Wet days / normal
0.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 October – 18 October60.8°60.4°+0.2°
19 October – 28 October60.2°55.7°+2.5°
29 October – 7 Novemberat normal49.3°—

October records over 66 years

86.7°1 October 1992All-time high
3.2°25 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Spokane (12 mi).

Sat, 1057° / 31°0Mostly clear
57 °Mostly clear

Duncan, Saturday, 10 October

Mostly clear. High 57°, low 31°.

Pressure29.80 inHg
Wind5.9 mph SW
Humidity46%
Visibility6.2 mi
Dew point31°
Sun, 1148° / 31°0Light rain
48 °Light rain

Duncan, Sunday, 11 October

Light rain. High 48°, low 31°.

Pressure29.97 inHg
Wind13.4 mph NE
Humidity51%
Visibility6.2 mi
Dew point25°
Mon, 1254° / 34°0Clear
54 °Clear

Duncan, Monday, 12 October

Clear. High 54°, low 34°.

Pressure30.03 inHg
Wind3.9 mph NE
Humidity47%
Visibility6.2 mi
Dew point29°
Tue, 1357° / 33°0Clear
57 °Clear

Duncan, Tuesday, 13 October

Clear. High 57°, low 33°.

Pressure30.12 inHg
Wind0.8 mph NW
Humidity42%
Visibility6.2 mi
Dew point28°
Wed, 1462° / 36°0Partly cloudy
62 °Partly cloudy

Duncan, Wednesday, 14 October

Partly cloudy. High 62°, low 36°.

Pressure30.18 inHg
Wind5.2 mph SW
Humidity41%
Visibility—
Dew point29°
Thu, 1562° / 40°0Clear
62 °Clear

Duncan, Thursday, 15 October

Clear. High 62°, low 40°.

Pressure30.33 inHg
Wind5.2 mph N
Humidity45%
Visibility—
Dew point32°
Fri, 1665° / 43°0Overcast
65 °Overcast

Duncan, Friday, 16 October

Overcast. High 65°, low 43°.

Pressure30.39 inHg
Wind5.6 mph NE
Humidity32%
Visibility—
Dew point26°
Sat, 1767° / 46°0Overcast
67 °Overcast

Duncan, Saturday, 17 October

Overcast. High 67°, low 46°.

Pressure30.24 inHg
Wind5.1 mph SW
Humidity37%
Visibility—
Dew point32°
Sun, 1869° / 46°0Clear
69 °Clear

Duncan, Sunday, 18 October

Clear. High 69°, low 46°.

Pressure30.18 inHg
Wind4.1 mph SW
Humidity35%
Visibility—
Dew point31°
Mon, 1971° / 47°0Partly cloudy
71 °Partly cloudy

Duncan, Monday, 19 October

Partly cloudy. High 71°, low 47°.

Pressure30.00 inHg
Wind5.3 mph SW
Humidity29%
Visibility—
Dew point28°
Tue, 2066° / 48°0Partly cloudy
66 °Partly cloudy

Duncan, Tuesday, 20 October

Partly cloudy. High 66°, low 48°.

Pressure30.00 inHg
Wind6.1 mph NW
Humidity38%
Visibility—
Dew point33°
Wed, 2166° / 44°0Clear
66 °Clear

Duncan, Wednesday, 21 October

Clear. High 66°, low 44°.

Pressure30.09 inHg
Wind7.1 mph NE
Humidity43%
Visibility—
Dew point34°
Thu, 2251° / 46°0.43Rain
51 °Rain

Duncan, Thursday, 22 October

Rain. High 51°, low 46°.

Pressure29.88 inHg
Wind12.9 mph SW
Humidity92%
Visibility—
Dew point46°
Fri, 2352° / 40°0Overcast
52 °Overcast

Duncan, Friday, 23 October

Overcast. High 52°, low 40°.

Pressure30.12 inHg
Wind6.4 mph S
Humidity61%
Visibility—
Dew point34°
Sat, 2455° / 39°0Clear
55 °Clear

Duncan, Saturday, 24 October

Clear. High 55°, low 39°.

Pressure30.09 inHg
Wind5.3 mph N
Humidity63%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2555° / 37°0.07Climate normal
55 °Climate normal

Duncan, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high55°
Average low37°
Average precipitation0.07 in
Chance of precipitation38%
Record high70° (1966)
Record low3° (2020)
Mon, 2653° / 37°0.06Climate normal
53 °Climate normal

Duncan, Monday, 26 October

Climate normal for this date — 60-year average.

Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation38%
Record high70° (1986)
Record low6° (2020)
Tue, 2752° / 36°0.06Climate normal
52 °Climate normal

Duncan, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high52°
Average low36°
Average precipitation0.06 in
Chance of precipitation33%
Record high67° (1965)
Record low13° (2020)
Wed, 2852° / 36°0.07Climate normal
52 °Climate normal

Duncan, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high52°
Average low36°
Average precipitation0.07 in
Chance of precipitation38%
Record high64° (2003)
Record low19° (2023)
Thu, 2951° / 35°0.07Climate normal
51 °Climate normal

Duncan, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high51°
Average low35°
Average precipitation0.07 in
Chance of precipitation37%
Record high67° (1983)
Record low17° (2019)
Fri, 3051° / 35°0.06Climate normal
51 °Climate normal

Duncan, Friday, 30 October

Climate normal for this date — 60-year average.

Average high51°
Average low35°
Average precipitation0.06 in
Chance of precipitation27%
Record high66° (2008)
Record low16° (2019)
Sat, 3150° / 35°0.09Climate normal
50 °Climate normal

Duncan, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.09 in
Chance of precipitation32%
Record high68° (1988)
Record low17° (1984)
Sun, 0150° / 35°0.09Climate normal
50 °Climate normal

Duncan, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.09 in
Chance of precipitation42%
Record high67° (1965)
Record low18° (2002)
Mon, 0250° / 35°0.08Climate normal
50 °Climate normal

Duncan, Monday, 2 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.08 in
Chance of precipitation32%
Record high64° (1981)
Record low19° (2002)
Tue, 0350° / 35°0.06Climate normal
50 °Climate normal

Duncan, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high50°
Average low35°
Average precipitation0.06 in
Chance of precipitation30%
Record high63° (1975)
Record low21° (2002)
Wed, 0449° / 35°0.13Climate normal
49 °Climate normal

Duncan, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°
Average low35°
Average precipitation0.13 in
Chance of precipitation43%
Record high67° (1975)
Record low22° (2017)
Thu, 0548° / 34°0.07Climate normal
48 °Climate normal

Duncan, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high48°
Average low34°
Average precipitation0.07 in
Chance of precipitation38%
Record high65° (1975)
Record low19° (2003)
Fri, 0648° / 34°0.09Climate normal
48 °Climate normal

Duncan, Friday, 6 November

Climate normal for this date — 60-year average.

Average high48°
Average low34°
Average precipitation0.09 in
Chance of precipitation45%
Record high62° (2012)
Record low16° (1994)
Sat, 0747° / 33°0.13Climate normal
47 °Climate normal

Duncan, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high47°
Average low33°
Average precipitation0.13 in
Chance of precipitation42%
Record high63° (1999)
Record low10° (2017)

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, WA 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, WA 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.