Monthly outlook for Mill Creek, WA: average high 55.9°, average low 42.3°. That is 1.1° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 9 days and 3.5 inches. The warmest day looks like 28 October (60.9°), the coolest 24 October (37.5°).
55.9°/42.3°
Average high / low
+1.1°
Above normal
3 / 9
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
57.6°
55°
+1.4°
28 October – 6 November
53.1°
51.7°
+0.8°
7 November – 16 November
at normal
49.2°
—
October records over 66 years
85.3°16 October 2022All-time high
23.9°28 October 2023All-time low
Climate normals and records are computed from the nearest reference point — Mill Creek East (2 mi).
Mon, 1960° / 45°0
60 °
Mill Creek, Monday, 19 October
Overcast. High 60°, low 45°.
Pressure30.00 inHg
Wind0.9 mph SE
Humidity77%
Visibility6.2 mi
Dew point47°
Tue, 2058° / 48°0
58 °
Mill Creek, Tuesday, 20 October
Mostly clear. High 58°, low 48°.
Pressure30.06 inHg
Wind7.6 mph NW
Humidity80%
Visibility2.2 mi
Dew point49°
Wed, 2160° / 44°0
60 °
Mill Creek, Wednesday, 21 October
Partly cloudy. High 60°, low 44°.
Pressure29.94 inHg
Wind1.2 mph NW
Humidity79%
Visibility—
Dew point49°
Thu, 2255° / 45°0
55 °
Mill Creek, Thursday, 22 October
Overcast. High 55°, low 45°.
Pressure30.00 inHg
Wind7 mph NW
Humidity68%
Visibility—
Dew point42°
Fri, 2353° / 40°0
53 °
Mill Creek, Friday, 23 October
Mostly clear. High 53°, low 40°.
Pressure30.27 inHg
Wind6.5 mph S
Humidity77%
Visibility—
Dew point42°
Sat, 2458° / 38°0
58 °
Mill Creek, Saturday, 24 October
Overcast. High 58°, low 38°.
Pressure30.39 inHg
Wind4.7 mph NW
Humidity57%
Visibility—
Dew point35°
Sun, 2558° / 39°0
58 °
Mill Creek, Sunday, 25 October
Overcast. High 58°, low 39°.
Pressure30.24 inHg
Wind5.6 mph NW
Humidity41%
Visibility—
Dew point30°
Mon, 2656° / 41°0
56 °
Mill Creek, Monday, 26 October
Overcast. High 56°, low 41°.
Pressure30.09 inHg
Wind8 mph NW
Humidity76%
Visibility—
Dew point42°
Tue, 2760° / 40°0
60 °
Mill Creek, Tuesday, 27 October
Clear. High 60°, low 40°.
Pressure30.06 inHg
Wind4.6 mph NW
Humidity63%
Visibility—
Dew point40°
Wed, 2861° / 39°0
61 °
Mill Creek, Wednesday, 28 October
Clear. High 61°, low 39°.
Pressure30.18 inHg
Wind3.6 mph NW
Humidity55%
Visibility—
Dew point36°
Thu, 2955° / 41°0
55 °
Mill Creek, Thursday, 29 October
Overcast. High 55°, low 41°.
Pressure30.15 inHg
Wind4.5 mph S
Humidity77%
Visibility—
Dew point42°
Fri, 3056° / 45°0
56 °
Mill Creek, Friday, 30 October
Overcast. High 56°, low 45°.
Pressure30.03 inHg
Wind12.3 mph S
Humidity67%
Visibility—
Dew point41°
Sat, 3153° / 44°0.3
53 °
Mill Creek, Saturday, 31 October
Rain. High 53°, low 44°.
Pressure29.77 inHg
Wind16.8 mph SW
Humidity77%
Visibility—
Dew point46°
Sun, 0146° / 43°0.23
46 °
Mill Creek, Sunday, 1 November
Light rain. High 46°, low 43°.
Pressure30.00 inHg
Wind5.6 mph E
Humidity85%
Visibility—
Dew point41°
Mon, 0248° / 44°0.27
48 °
Mill Creek, Monday, 2 November
Light rain. High 48°, low 44°.
Pressure29.97 inHg
Wind8.9 mph SE
Humidity91%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0351° / 42°0.26
51 °
Mill Creek, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.26 in
Chance of precipitation58%
Record high64° (2010)
Record low29° (2003)
Wed, 0452° / 42°0.32
52 °
Mill Creek, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.32 in
Chance of precipitation60%
Record high65° (1980)
Record low30° (2003)
Thu, 0551° / 41°0.2
51 °
Mill Creek, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.2 in
Chance of precipitation58%
Record high63° (1997)
Record low25° (1973)
Fri, 0650° / 41°0.28
50 °
Mill Creek, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.28 in
Chance of precipitation65%
Record high57° (1967)
Record low28° (2003)
Sat, 0750° / 41°0.26
50 °
Mill Creek, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low41°
Average precipitation0.26 in
Chance of precipitation62%
Record high60° (2016)
Record low30° (2017)
Sun, 0850° / 40°0.2
50 °
Mill Creek, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.2 in
Chance of precipitation53%
Record high64° (2016)
Record low31° (2019)
Mon, 0949° / 40°0.22
49 °
Mill Creek, Monday, 9 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.22 in
Chance of precipitation62%
Record high60° (2025)
Record low27° (2020)
Tue, 1050° / 40°0.2
50 °
Mill Creek, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.2 in
Chance of precipitation47%
Record high63° (2016)
Record low26° (2022)
Wed, 1149° / 40°0.23
49 °
Mill Creek, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.23 in
Chance of precipitation60%
Record high60° (1996)
Record low26° (1985)
Thu, 1249° / 40°0.27
49 °
Mill Creek, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.27 in
Chance of precipitation65%
Record high57° (1990)
Record low26° (1985)
Fri, 1349° / 40°0.31
49 °
Mill Creek, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.31 in
Chance of precipitation60%
Record high61° (1967)
Record low27° (2022)
Sat, 1449° / 40°0.28
49 °
Mill Creek, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.28 in
Chance of precipitation57%
Record high61° (1969)
Record low28° (1978)
Sun, 1549° / 40°0.26
49 °
Mill Creek, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low40°
Average precipitation0.26 in
Chance of precipitation63%
Record high57° (2021)
Record low28° (2014)
Mon, 1647° / 40°0.25
47 °
Mill Creek, Monday, 16 November
Climate normal for this date — 60-year average.
Average high47°
Average low40°
Average precipitation0.25 in
Chance of precipitation73%
Record high59° (1965)
Record low27° (2022)
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 Creek, 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 Creek, 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.