Monthly outlook for Harbor Heights, WA: average high 58.4°, average low 45.1°. That is 2.3° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 9 days and 3.6 inches. The warmest day looks like 21 October (66.4°), the coolest 24 October (37.3°).
58.4°/45.1°
Average high / low
+2.3°
Above normal
4 / 9
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
59.6°
55°
+2.6°
31 October – 9 November
56.3°
52.1°
+2.3°
10 November – 19 November
at normal
49.4°
—
October records over 66 years
85.8°1 October 1987All-time high
24.8°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Federal Way (8 mi).
Thu, 2259° / 41°0.03
59 °
Harbor Heights, Thursday, 22 October
Light rain. High 59°, low 41°.
Pressure29.97 inHg
Wind1.9 mph SE
Humidity66%
Visibility6.2 mi
Dew point44°
Fri, 2357° / 38°0
57 °
Harbor Heights, Friday, 23 October
Overcast. High 57°, low 38°.
Pressure30.33 inHg
Wind3 mph N
Humidity68%
Visibility6.2 mi
Dew point44°
Sat, 2453° / 37°0
53 °
Harbor Heights, Saturday, 24 October
Overcast. High 53°, low 37°.
Pressure30.18 inHg
Wind0.4 mph E
Humidity80%
Visibility6.2 mi
Dew point43°
Sun, 2561° / 43°0.02
61 °
Harbor Heights, Sunday, 25 October
Light rain. High 61°, low 43°.
Pressure30.09 inHg
Wind1.6 mph N
Humidity63%
Visibility6.2 mi
Dew point43°
Mon, 2664° / 44°0
64 °
Harbor Heights, Monday, 26 October
Overcast. High 64°, low 44°.
Pressure30.12 inHg
Wind7 mph N
Humidity77%
Visibility—
Dew point45°
Tue, 2761° / 45°0
61 °
Harbor Heights, Tuesday, 27 October
Overcast. High 61°, low 45°.
Pressure30.12 inHg
Wind5 mph N
Humidity54%
Visibility—
Dew point37°
Wed, 2863° / 47°0
63 °
Harbor Heights, Wednesday, 28 October
Overcast. High 63°, low 47°.
Pressure30.09 inHg
Wind3.5 mph N
Humidity43%
Visibility—
Dew point33°
Thu, 2961° / 47°0
61 °
Harbor Heights, Thursday, 29 October
Overcast. High 61°, low 47°.
Pressure30.03 inHg
Wind3.1 mph SW
Humidity48%
Visibility—
Dew point35°
Fri, 3051° / 48°0.21
51 °
Harbor Heights, Friday, 30 October
Light rain. High 51°, low 48°.
Pressure29.94 inHg
Wind4.3 mph S
Humidity95%
Visibility—
Dew point48°
Sat, 3156° / 46°0
56 °
Harbor Heights, Saturday, 31 October
Overcast. High 56°, low 46°.
Pressure29.97 inHg
Wind5.1 mph NE
Humidity81%
Visibility—
Dew point47°
Sun, 0158° / 42°0
58 °
Harbor Heights, Sunday, 1 November
Partly cloudy. High 58°, low 42°.
Pressure29.97 inHg
Wind7.8 mph N
Humidity73%
Visibility—
Dew point42°
Mon, 0258° / 46°0.01
58 °
Harbor Heights, Monday, 2 November
Light rain. High 58°, low 46°.
Pressure29.91 inHg
Wind3.6 mph S
Humidity65%
Visibility—
Dew point41°
Tue, 0354° / 50°0.36
54 °
Harbor Heights, Tuesday, 3 November
Light rain. High 54°, low 50°.
Pressure30.03 inHg
Wind2.6 mph E
Humidity94%
Visibility—
Dew point50°
Wed, 0455° / 53°0.13
55 °
Harbor Heights, Wednesday, 4 November
Light rain. High 55°, low 53°.
Pressure29.97 inHg
Wind4.5 mph S
Humidity97%
Visibility—
Dew point53°
Thu, 0556° / 53°0.31
56 °
Harbor Heights, Thursday, 5 November
Rain. High 56°, low 53°.
Pressure29.85 inHg
Wind5.5 mph W
Humidity85%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0651° / 41°0.31
51 °
Harbor Heights, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.31 in
Chance of precipitation60%
Record high60° (1999)
Record low26° (2003)
Sat, 0751° / 41°0.28
51 °
Harbor Heights, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.28 in
Chance of precipitation68%
Record high62° (2016)
Record low28° (2003)
Sun, 0851° / 40°0.2
51 °
Harbor Heights, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.2 in
Chance of precipitation53%
Record high65° (2016)
Record low30° (2020)
Mon, 0950° / 40°0.24
50 °
Harbor Heights, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.24 in
Chance of precipitation67%
Record high60° (1976)
Record low28° (2020)
Tue, 1051° / 40°0.2
51 °
Harbor Heights, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.2 in
Chance of precipitation52%
Record high63° (2016)
Record low25° (1986)
Wed, 1151° / 40°0.28
51 °
Harbor Heights, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.28 in
Chance of precipitation57%
Record high62° (1996)
Record low26° (1985)
Thu, 1250° / 40°0.3
50 °
Harbor Heights, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.3 in
Chance of precipitation63%
Record high60° (1990)
Record low24° (1985)
Fri, 1350° / 40°0.3
50 °
Harbor Heights, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.3 in
Chance of precipitation60%
Record high62° (1967)
Record low26° (1978)
Sat, 1450° / 40°0.3
50 °
Harbor Heights, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.3 in
Chance of precipitation55%
Record high62° (1969)
Record low26° (1978)
Sun, 1550° / 39°0.26
50 °
Harbor Heights, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high50°
Average low39°
Average precipitation0.26 in
Chance of precipitation68%
Record high60° (2021)
Record low27° (2014)
Mon, 1648° / 40°0.25
48 °
Harbor Heights, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low40°
Average precipitation0.25 in
Chance of precipitation70%
Record high60° (1965)
Record low26° (2014)
Tue, 1748° / 39°0.28
48 °
Harbor Heights, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.28 in
Chance of precipitation67%
Record high62° (1995)
Record low26° (1961)
Wed, 1847° / 38°0.19
47 °
Harbor Heights, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.19 in
Chance of precipitation55%
Record high57° (1965)
Record low25° (1985)
Thu, 1947° / 38°0.32
47 °
Harbor Heights, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.32 in
Chance of precipitation70%
Record high59° (1987)
Record low26° (1977)
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 Harbor Heights, 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 Harbor Heights, 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.