Monthly outlook for Roche Harbor, WA: average high 51.2°, average low 47.6°. That is 0.6° above the climate normal for October. Precipitation is expected on 8 days (about 1.2 inches), against a normal of 9 days and 3.1 inches. The warmest day looks like 3 November (53.7°), the coolest 31 October (42.1°).
51.2°/47.6°
Average high / low
+0.6°
Above normal
8 / 9
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
51.2°
50.6°
+0.3°
9 November – 18 November
51.3°
48.8°
+1.4°
19 November – 28 November
at normal
46.3°
—
October records over 66 years
73.2°16 October 2022All-time high
28.8°31 October 1984All-time low
Sat, 3150° / 42°0
50 °
Roche Harbor, Saturday, 31 October
Overcast. High 50°, low 42°.
Pressure30.03 inHg
Wind5.5 mph N
Humidity99%
Visibility1.9 mi
Dew point44°
Sun, 0150° / 47°0
50 °
Roche Harbor, Sunday, 1 November
Mostly clear. High 50°, low 47°.
Pressure30.09 inHg
Wind4.8 mph N
Humidity78%
Visibility6.2 mi
Dew point41°
Mon, 0251° / 45°0
51 °
Roche Harbor, Monday, 2 November
Overcast. High 51°, low 45°.
Pressure30.30 inHg
Wind5.4 mph NW
Humidity97%
Visibility1.5 mi
Dew point44°
Tue, 0354° / 51°0
54 °
Roche Harbor, Tuesday, 3 November
Overcast. High 54°, low 51°.
Pressure30.21 inHg
Wind15.2 mph N
Humidity84%
Visibility—
Dew point47°
Wed, 0453° / 46°0
53 °
Roche Harbor, Wednesday, 4 November
Overcast. High 53°, low 46°.
Pressure29.94 inHg
Wind11.7 mph N
Humidity97%
Visibility—
Dew point48°
Thu, 0551° / 48°0
51 °
Roche Harbor, Thursday, 5 November
Overcast. High 51°, low 48°.
Pressure29.85 inHg
Wind8.2 mph N
Humidity74%
Visibility—
Dew point42°
Fri, 0652° / 48°0.15
52 °
Roche Harbor, Friday, 6 November
Light rain. High 52°, low 48°.
Pressure29.88 inHg
Wind26.8 mph S
Humidity77%
Visibility—
Dew point44°
Sat, 0749° / 47°0.19
49 °
Roche Harbor, Saturday, 7 November
Light rain. High 49°, low 47°.
Pressure30.15 inHg
Wind11 mph NE
Humidity74%
Visibility—
Dew point40°
Sun, 0853° / 49°0.07
53 °
Roche Harbor, Sunday, 8 November
Light rain. High 53°, low 49°.
Pressure29.91 inHg
Wind14 mph SE
Humidity70%
Visibility—
Dew point43°
Mon, 0953° / 50°0.05
53 °
Roche Harbor, Monday, 9 November
Light rain. High 53°, low 50°.
Pressure29.56 inHg
Wind16.5 mph SE
Humidity87%
Visibility—
Dew point47°
Tue, 1051° / 49°0.02
51 °
Roche Harbor, Tuesday, 10 November
Light rain. High 51°, low 49°.
Pressure29.47 inHg
Wind20.2 mph SE
Humidity83%
Visibility—
Dew point45°
Wed, 1151° / 49°0.17
51 °
Roche Harbor, Wednesday, 11 November
Light rain. High 51°, low 49°.
Pressure29.26 inHg
Wind16.9 mph SE
Humidity83%
Visibility—
Dew point46°
Thu, 1251° / 49°0.35
51 °
Roche Harbor, Thursday, 12 November
Rain. High 51°, low 49°.
Pressure29.59 inHg
Wind21.8 mph SE
Humidity87%
Visibility—
Dew point47°
Fri, 1351° / 48°0.01
51 °
Roche Harbor, Friday, 13 November
Light rain. High 51°, low 48°.
Pressure30.00 inHg
Wind17.5 mph E
Humidity74%
Visibility—
Dew point41°
Sat, 1451° / 49°0.07
51 °
Roche Harbor, Saturday, 14 November
Light rain. High 51°, low 49°.
Pressure29.77 inHg
Wind20.6 mph SE
Humidity73%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1549° / 44°0.25
49 °
Roche Harbor, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low44°
Average precipitation0.25 in
Chance of precipitation63%
Record high58° (2001)
Record low36° (2000)
Mon, 1648° / 44°0.19
48 °
Roche Harbor, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low44°
Average precipitation0.19 in
Chance of precipitation50%
Record high55° (1965)
Record low38° (2000)
Tue, 1748° / 43°0.17
48 °
Roche Harbor, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low43°
Average precipitation0.17 in
Chance of precipitation57%
Record high57° (1995)
Record low37° (1961)
Wed, 1847° / 43°0.13
47 °
Roche Harbor, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low43°
Average precipitation0.13 in
Chance of precipitation47%
Record high56° (1995)
Record low32° (1985)
Thu, 1947° / 43°0.26
47 °
Roche Harbor, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high47°
Average low43°
Average precipitation0.26 in
Chance of precipitation70%
Record high56° (1962)
Record low30° (1978)
Fri, 2047° / 43°0.18
47 °
Roche Harbor, Friday, 20 November
Climate normal for this date — 60-year average.
Average high47°
Average low43°
Average precipitation0.18 in
Chance of precipitation52%
Record high56° (1962)
Record low29° (1985)
Sat, 2147° / 42°0.16
47 °
Roche Harbor, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high47°
Average low42°
Average precipitation0.16 in
Chance of precipitation52%
Record high54° (1968)
Record low24° (1985)
Sun, 2246° / 41°0.15
46 °
Roche Harbor, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high46°
Average low41°
Average precipitation0.15 in
Chance of precipitation57%
Record high57° (2017)
Record low19° (1985)
Mon, 2346° / 42°0.28
46 °
Roche Harbor, Monday, 23 November
Climate normal for this date — 60-year average.
Average high46°
Average low42°
Average precipitation0.28 in
Chance of precipitation65%
Record high56° (2017)
Record low22° (1985)
Tue, 2447° / 42°0.21
47 °
Roche Harbor, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high47°
Average low42°
Average precipitation0.21 in
Chance of precipitation57%
Record high53° (1974)
Record low27° (2010)
Wed, 2546° / 42°0.19
46 °
Roche Harbor, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high46°
Average low42°
Average precipitation0.19 in
Chance of precipitation58%
Record high53° (1962)
Record low26° (1985)
Thu, 2646° / 42°0.19
46 °
Roche Harbor, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high46°
Average low42°
Average precipitation0.19 in
Chance of precipitation55%
Record high55° (2017)
Record low22° (1985)
Fri, 2746° / 41°0.22
46 °
Roche Harbor, Friday, 27 November
Climate normal for this date — 60-year average.
Average high46°
Average low41°
Average precipitation0.22 in
Chance of precipitation55%
Record high54° (2014)
Record low15° (1985)
Sat, 2846° / 41°0.2
46 °
Roche Harbor, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high46°
Average low41°
Average precipitation0.2 in
Chance of precipitation43%
Record high53° (1995)
Record low19° (1985)
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 Roche Harbor, 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 Roche Harbor, 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.