Monthly outlook for Roche Harbor, WA: average high 51.4°, average low 47°. That is 0.6° above the climate normal for October. Precipitation is expected on 7 days (about 1.1 inches), against a normal of 8 days and 3.0 inches. The warmest day looks like 12 November (54.3°), the coolest 30 October (41.3°).
51.4°/47°
Average high / low
+0.6°
Above normal
7 / 8
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
28 October – 6 November
50.7°
50.9°
-0.1°
7 November – 16 November
52.5°
49.2°
+1.8°
17 November – 26 November
at normal
46.7°
—
October records over 66 years
73.2°16 October 2022All-time high
28.8°31 October 1984All-time low
Thu, 2948° / 42°0.21
48 °
Roche Harbor, Thursday, 29 October
Rain. High 48°, low 42°.
Pressure29.97 inHg
Wind15.3 mph E
Humidity83%
Visibility5.8 mi
Dew point43°
Fri, 3048° / 41°0.09
48 °
Roche Harbor, Friday, 30 October
Light rain. High 48°, low 41°.
Pressure29.91 inHg
Wind12.3 mph N
Humidity78%
Visibility5.2 mi
Dew point42°
Sat, 3151° / 46°0
51 °
Roche Harbor, Saturday, 31 October
Overcast. High 51°, low 46°.
Pressure30.03 inHg
Wind11 mph N
Humidity84%
Visibility0.3 mi
Dew point41°
Sun, 0150° / 44°0
50 °
Roche Harbor, Sunday, 1 November
Overcast. High 50°, low 44°.
Pressure30.21 inHg
Wind5.6 mph N
Humidity97%
Visibility—
Dew point44°
Mon, 0251° / 44°0
51 °
Roche Harbor, Monday, 2 November
Overcast. High 51°, low 44°.
Pressure30.27 inHg
Wind5.7 mph N
Humidity95%
Visibility—
Dew point44°
Tue, 0352° / 49°0
52 °
Roche Harbor, Tuesday, 3 November
Overcast. High 52°, low 49°.
Pressure30.24 inHg
Wind6.8 mph N
Humidity80%
Visibility—
Dew point45°
Wed, 0451° / 47°0
51 °
Roche Harbor, Wednesday, 4 November
Overcast. High 51°, low 47°.
Pressure29.91 inHg
Wind7.5 mph N
Humidity67%
Visibility—
Dew point39°
Thu, 0551° / 50°0
51 °
Roche Harbor, Thursday, 5 November
Overcast. High 51°, low 50°.
Pressure30.06 inHg
Wind6.4 mph SE
Humidity74%
Visibility—
Dew point43°
Fri, 0654° / 50°0.03
54 °
Roche Harbor, Friday, 6 November
Light rain. High 54°, low 50°.
Pressure30.00 inHg
Wind10.4 mph SE
Humidity87%
Visibility—
Dew point48°
Sat, 0753° / 48°0.4
53 °
Roche Harbor, Saturday, 7 November
Rain. High 53°, low 48°.
Pressure29.74 inHg
Wind30.1 mph SE
Humidity94%
Visibility—
Dew point49°
Sun, 0852° / 48°0.13
52 °
Roche Harbor, Sunday, 8 November
Light rain. High 52°, low 48°.
Pressure30.27 inHg
Wind14.2 mph S
Humidity81%
Visibility—
Dew point45°
Mon, 0950° / 47°0.09
50 °
Roche Harbor, Monday, 9 November
Light rain. High 50°, low 47°.
Pressure30.24 inHg
Wind10.8 mph N
Humidity81%
Visibility—
Dew point43°
Tue, 1052° / 48°0.07
52 °
Roche Harbor, Tuesday, 10 November
Light rain. High 52°, low 48°.
Pressure29.94 inHg
Wind7 mph NE
Humidity91%
Visibility—
Dew point47°
Wed, 1154° / 51°0
54 °
Roche Harbor, Wednesday, 11 November
Overcast. High 54°, low 51°.
Pressure29.68 inHg
Wind8 mph NE
Humidity81%
Visibility—
Dew point47°
Thu, 1254° / 51°0
54 °
Roche Harbor, Thursday, 12 November
Overcast. High 54°, low 51°.
Pressure29.56 inHg
Wind9.4 mph NE
Humidity73%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 1349° / 45°0.22
49 °
Roche Harbor, Friday, 13 November
Climate normal for this date — 60-year average.
Average high49°
Average low45°
Average precipitation0.22 in
Chance of precipitation58%
Record high57° (1967)
Record low34° (1985)
Sat, 1449° / 44°0.2
49 °
Roche Harbor, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high49°
Average low44°
Average precipitation0.2 in
Chance of precipitation50%
Record high55° (1969)
Record low35° (1978)
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)
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.