Monthly outlook for Friday Harbor, WA: average high 51°, average low 46.7°. That is 0.1° above the climate normal for October. Precipitation is expected on 9 days (about 1.7 inches), against a normal of 8 days and 2.9 inches. The warmest day looks like 26 October (57.8°), the coolest 3 November (42.5°).
51°/46.7°
Average high / low
+0.1°
Above normal
9 / 8
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
25 October – 3 November
49.9°
51.3°
-0.8°
4 November – 13 November
52.8°
49.8°
+1.7°
14 November – 23 November
at normal
47.5°
—
October records over 66 years
73.2°16 October 2022All-time high
28.8°31 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Roche Harbor (6 mi).
Mon, 2658° / 48°0
58 °
Friday Harbor, Monday, 26 October
Mostly clear. High 58°, low 48°.
Pressure30.03 inHg
Wind5.8 mph N
Humidity81%
Visibility6.0 mi
Dew point47°
Tue, 2751° / 48°0.1
51 °
Friday Harbor, Tuesday, 27 October
Light rain. High 51°, low 48°.
Pressure29.97 inHg
Wind1.4 mph SW
Humidity77%
Visibility2.5 mi
Dew point44°
Wed, 2849° / 45°0.19
49 °
Friday Harbor, Wednesday, 28 October
Rain. High 49°, low 45°.
Pressure29.94 inHg
Wind10.6 mph SE
Humidity86%
Visibility5.8 mi
Dew point42°
Thu, 2946° / 45°0.12
46 °
Friday Harbor, Thursday, 29 October
Light rain. High 46°, low 45°.
Pressure29.97 inHg
Wind13.4 mph E
Humidity87%
Visibility6.2 mi
Dew point42°
Fri, 3047° / 44°0.02
47 °
Friday Harbor, Friday, 30 October
Light rain. High 47°, low 44°.
Pressure29.97 inHg
Wind7.9 mph NE
Humidity84%
Visibility—
Dew point40°
Sat, 3149° / 43°0
49 °
Friday Harbor, Saturday, 31 October
Partly cloudy. High 49°, low 43°.
Pressure30.00 inHg
Wind7.4 mph E
Humidity77%
Visibility—
Dew point38°
Sun, 0149° / 45°0
49 °
Friday Harbor, Sunday, 1 November
Overcast. High 49°, low 45°.
Pressure30.06 inHg
Wind6.8 mph NW
Humidity75%
Visibility—
Dew point41°
Mon, 0249° / 43°0
49 °
Friday Harbor, Monday, 2 November
Clear. High 49°, low 43°.
Pressure30.12 inHg
Wind10.9 mph N
Humidity71%
Visibility—
Dew point37°
Tue, 0348° / 43°0.01
48 °
Friday Harbor, Tuesday, 3 November
Light rain. High 48°, low 43°.
Pressure29.83 inHg
Wind9.3 mph NE
Humidity64%
Visibility—
Dew point33°
Wed, 0449° / 47°0.33
49 °
Friday Harbor, Wednesday, 4 November
Rain. High 49°, low 47°.
Pressure29.74 inHg
Wind8.2 mph NE
Humidity81%
Visibility—
Dew point43°
Thu, 0555° / 50°0.22
55 °
Friday Harbor, Thursday, 5 November
Light rain. High 55°, low 50°.
Pressure29.53 inHg
Wind19.9 mph SE
Humidity88%
Visibility—
Dew point50°
Fri, 0654° / 52°0.13
54 °
Friday Harbor, Friday, 6 November
Light rain. High 54°, low 52°.
Pressure29.62 inHg
Wind17.6 mph SE
Humidity90%
Visibility—
Dew point50°
Sat, 0754° / 51°0.08
54 °
Friday Harbor, Saturday, 7 November
Light rain. High 54°, low 51°.
Pressure29.85 inHg
Wind20.3 mph SE
Humidity91%
Visibility—
Dew point50°
Sun, 0854° / 51°0.02
54 °
Friday Harbor, Sunday, 8 November
Light rain. High 54°, low 51°.
Pressure29.88 inHg
Wind21 mph SE
Humidity82%
Visibility—
Dew point47°
Mon, 0950° / 48°0.08
50 °
Friday Harbor, Monday, 9 November
Light rain. High 50°, low 48°.
Pressure29.91 inHg
Wind7.7 mph S
Humidity86%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1049° / 45°0.15
49 °
Friday Harbor, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high49°
Average low45°
Average precipitation0.15 in
Chance of precipitation48%
Record high56° (1981)
Record low34° (1986)
Wed, 1149° / 45°0.21
49 °
Friday Harbor, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high49°
Average low45°
Average precipitation0.21 in
Chance of precipitation55%
Record high56° (1981)
Record low31° (1985)
Thu, 1249° / 45°0.2
49 °
Friday Harbor, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high49°
Average low45°
Average precipitation0.2 in
Chance of precipitation62%
Record high57° (2016)
Record low35° (1985)
Fri, 1349° / 45°0.22
49 °
Friday 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 °
Friday 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 °
Friday 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 °
Friday 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 °
Friday 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 °
Friday 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 °
Friday 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 °
Friday 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 °
Friday 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 °
Friday 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 °
Friday 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)
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 Friday 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 Friday 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.