As of 10:14 PDT

Weather in Mill Plain, WA

59°

Mill Plain, Friday, 9 October, 10:14

Overcast. Feels like 58°. High 65°, low 49°.

Pressure29.88 inHg

Wind8.1 mph S

Humidity82%

Visibility3.3 mi

Dew point54°

See detailed hourly forecast

Monthly outlook for Mill Plain, WA: average high 67.6°, average low 46.7°. That is 3.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.1 inches), against a normal of 7 days and 3.3 inches. The warmest day looks like 23 October (75.5°), the coolest 11 October (38.4°).

67.6°/46.7°

Average high / low

+3.5°

Above normal

2 / 7

Wet days / normal

0.1 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 October – 18 October	66.6°	62.2°	+2.5°
19 October – 28 October	69.2°	58.5°	+6°
29 October – 7 November	at normal	54.3°	—

October records over 66 years

88.9°1 October 1987All-time high

26.6°29 October 1971All-time low

Sat, 1062° / 43°

0.04

62 °

Mill Plain, Saturday, 10 October

Light rain. High 62°, low 43°.

Pressure29.88 inHg

Wind2.1 mph S

Humidity74%

Visibility6.2 mi

Dew point46°

Sun, 1164° / 38°

64 °

Mill Plain, Sunday, 11 October

Clear. High 64°, low 38°.

Pressure29.94 inHg

Wind4.6 mph NW

Humidity54%

Visibility6.2 mi

Dew point42°

Mon, 1263° / 40°

63 °

Mill Plain, Monday, 12 October

Clear. High 63°, low 40°.

Pressure30.09 inHg

Wind3.7 mph W

Humidity54%

Visibility6.2 mi

Dew point41°

Tue, 1364° / 43°

64 °

Mill Plain, Tuesday, 13 October

Partly cloudy. High 64°, low 43°.

Pressure30.18 inHg

Wind3.9 mph N

Humidity59%

Visibility—

Dew point40°

Wed, 1465° / 50°

65 °

Mill Plain, Wednesday, 14 October

Overcast. High 65°, low 50°.

Pressure30.33 inHg

Wind3.9 mph NW

Humidity71%

Visibility—

Dew point49°

Thu, 1575° / 49°

75 °

Mill Plain, Thursday, 15 October

Overcast. High 75°, low 49°.

Pressure30.21 inHg

Wind4.4 mph NE

Humidity58%

Visibility—

Dew point46°

Fri, 1674° / 52°

74 °

Mill Plain, Friday, 16 October

Partly cloudy. High 74°, low 52°.

Pressure30.30 inHg

Wind4.3 mph W

Humidity41%

Visibility—

Dew point41°

Sat, 1768° / 49°

68 °

Mill Plain, Saturday, 17 October

Overcast. High 68°, low 49°.

Pressure30.15 inHg

Wind5.4 mph NW

Humidity56%

Visibility—

Dew point44°

Sun, 1867° / 47°

67 °

Mill Plain, Sunday, 18 October

Mostly clear. High 67°, low 47°.

Pressure30.06 inHg

Wind4.9 mph N

Humidity60%

Visibility—

Dew point44°

Mon, 1959° / 47°

0.01

59 °

Mill Plain, Monday, 19 October

Light rain. High 59°, low 47°.

Pressure30.18 inHg

Wind3 mph SW

Humidity74%

Visibility—

Dew point44°

Tue, 2064° / 45°

64 °

Mill Plain, Tuesday, 20 October

Overcast. High 64°, low 45°.

Pressure30.27 inHg

Wind3.3 mph NW

Humidity64%

Visibility—

Dew point43°

Wed, 2168° / 48°

68 °

Mill Plain, Wednesday, 21 October

Overcast. High 68°, low 48°.

Pressure30.24 inHg

Wind3 mph SE

Humidity49%

Visibility—

Dew point37°

Thu, 2274° / 48°

74 °

Mill Plain, Thursday, 22 October

Overcast. High 74°, low 48°.

Pressure30.09 inHg

Wind7.3 mph NE

Humidity39%

Visibility—

Dew point38°

Fri, 2376° / 49°

76 °

Mill Plain, Friday, 23 October

Clear. High 76°, low 49°.

Pressure29.97 inHg

Wind3.7 mph E

Humidity31%

Visibility—

Dew point32°

Sat, 2474° / 50°

74 °

Mill Plain, Saturday, 24 October

Partly cloudy. High 74°, low 50°.

Pressure29.94 inHg

Wind3.2 mph W

Humidity28%

Visibility—

Dew point30°

From day 17 onward the outlook is built from 60-year climate statistics

Sun, 2557° / 44°

0.3

57 °

Mill Plain, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high57°

Average low44°

Average precipitation0.3 in

Chance of precipitation57%

Record high74° (1965)

Record low35° (1969)

Mon, 2656° / 43°

0.37

56 °

Mill Plain, Monday, 26 October

Climate normal for this date — 60-year average.

Average high56°

Average low43°

Average precipitation0.37 in

Chance of precipitation58%

Record high72° (2003)

Record low30° (2020)

Tue, 2757° / 42°

0.32

57 °

Mill Plain, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high57°

Average low42°

Average precipitation0.32 in

Chance of precipitation52%

Record high73° (1987)

Record low29° (1971)

Wed, 2856° / 42°

0.34

56 °

Mill Plain, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high56°

Average low42°

Average precipitation0.34 in

Chance of precipitation60%

Record high72° (1987)

Record low29° (2019)

Thu, 2955° / 42°

0.28

55 °

Mill Plain, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.28 in

Chance of precipitation55%

Record high69° (1962)

Record low27° (1971)

Fri, 3055° / 42°

0.3

55 °

Mill Plain, Friday, 30 October

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.3 in

Chance of precipitation53%

Record high66° (1965)

Record low27° (1991)

Sat, 3155° / 42°

0.39

55 °

Mill Plain, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.39 in

Chance of precipitation58%

Record high68° (1966)

Record low28° (2006)

Sun, 0154° / 42°

0.35

54 °

Mill Plain, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high54°

Average low42°

Average precipitation0.35 in

Chance of precipitation55%

Record high67° (1966)

Record low28° (2003)

Mon, 0255° / 42°

0.27

55 °

Mill Plain, Monday, 2 November

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.27 in

Chance of precipitation48%

Record high67° (1981)

Record low29° (1995)

Tue, 0355° / 42°

0.29

55 °

Mill Plain, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high55°

Average low42°

Average precipitation0.29 in

Chance of precipitation57%

Record high66° (2010)

Record low29° (1995)

Wed, 0455° / 43°

0.45

55 °

Mill Plain, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high55°

Average low43°

Average precipitation0.45 in

Chance of precipitation63%

Record high69° (1980)

Record low31° (1968)

Thu, 0554° / 42°

0.35

54 °

Mill Plain, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high54°

Average low42°

Average precipitation0.35 in

Chance of precipitation73%

Record high66° (1987)

Record low26° (1971)

Fri, 0653° / 42°

0.48

53 °

Mill Plain, Friday, 6 November

Climate normal for this date — 60-year average.

Average high53°

Average low42°

Average precipitation0.48 in

Chance of precipitation68%

Record high63° (1999)

Record low30° (1971)

Sat, 0753° / 42°

0.42

53 °

Mill Plain, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high53°

Average low42°

Average precipitation0.42 in

Chance of precipitation63%

Record high65° (2016)

Record low32° (2001)

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 Mill Plain, 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 Mill Plain, 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.