Monthly outlook for Fern Heath, WA: average high 53.4°, average low 43.7°. That is 0.1° above the climate normal for October. Precipitation is expected on 9 days (about 4.1 inches), against a normal of 9 days and 3.8 inches. The warmest day looks like 26 October (59.1°), the coolest 31 October (38.9°).
53.4°/43.7°
Average high / low
+0.1°
Above normal
9 / 9
Wet days / normal
4.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
24 October – 2 November
53.5°
53.8°
-0.2°
3 November – 12 November
53.2°
51.4°
+1°
13 November – 22 November
at normal
48.1°
—
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 (7 mi).
Sun, 2557° / 43°0.42
57 °
Fern Heath, Sunday, 25 October
Heavy rain. High 57°, low 43°.
Pressure29.97 inHg
Wind3.3 mph E
Humidity88%
Visibility6.2 mi
Dew point48°
Mon, 2659° / 42°0.02
59 °
Fern Heath, Monday, 26 October
Light rain. High 59°, low 42°.
Pressure30.06 inHg
Wind1.1 mph W
Humidity75%
Visibility6.2 mi
Dew point48°
Tue, 2757° / 46°0.01
57 °
Fern Heath, Tuesday, 27 October
Light rain. High 57°, low 46°.
Pressure30.06 inHg
Wind8 mph SW
Humidity81%
Visibility6.2 mi
Dew point47°
Wed, 2853° / 44°0.23
53 °
Fern Heath, Wednesday, 28 October
Light rain. High 53°, low 44°.
Pressure29.91 inHg
Wind8.9 mph SW
Humidity82%
Visibility5.6 mi
Dew point46°
Thu, 2947° / 41°0.44
47 °
Fern Heath, Thursday, 29 October
Rain. High 47°, low 41°.
Pressure29.88 inHg
Wind5 mph SE
Humidity96%
Visibility—
Dew point42°
Fri, 3049° / 39°0.02
49 °
Fern Heath, Friday, 30 October
Light rain. High 49°, low 39°.
Pressure30.00 inHg
Wind3.1 mph S
Humidity83%
Visibility—
Dew point38°
Sat, 3151° / 39°0
51 °
Fern Heath, Saturday, 31 October
Overcast. High 51°, low 39°.
Pressure30.12 inHg
Wind3.2 mph SW
Humidity71%
Visibility—
Dew point36°
Sun, 0151° / 42°0
51 °
Fern Heath, Sunday, 1 November
Overcast. High 51°, low 42°.
Pressure30.24 inHg
Wind3.1 mph S
Humidity59%
Visibility—
Dew point32°
Mon, 0257° / 40°0
57 °
Fern Heath, Monday, 2 November
Mostly clear. High 57°, low 40°.
Pressure29.97 inHg
Wind2.8 mph SE
Humidity48%
Visibility—
Dew point30°
Tue, 0353° / 45°0.34
53 °
Fern Heath, Tuesday, 3 November
Rain. High 53°, low 45°.
Pressure29.80 inHg
Wind8.5 mph SW
Humidity50%
Visibility—
Dew point33°
Wed, 0451° / 46°0.48
51 °
Fern Heath, Wednesday, 4 November
Rain. High 51°, low 46°.
Pressure29.77 inHg
Wind12.8 mph S
Humidity82%
Visibility—
Dew point42°
Thu, 0553° / 46°0.52
53 °
Fern Heath, Thursday, 5 November
Rain. High 53°, low 46°.
Pressure29.80 inHg
Wind4.7 mph SE
Humidity78%
Visibility—
Dew point44°
Fri, 0656° / 50°0.92
56 °
Fern Heath, Friday, 6 November
Rain. High 56°, low 50°.
Pressure29.85 inHg
Wind6.6 mph SE
Humidity91%
Visibility—
Dew point51°
Sat, 0753° / 52°0.26
53 °
Fern Heath, Saturday, 7 November
Light rain. High 53°, low 52°.
Pressure29.71 inHg
Wind7.1 mph S
Humidity93%
Visibility—
Dew point50°
Sun, 0853° / 46°0.44
53 °
Fern Heath, Sunday, 8 November
Rain. High 53°, low 46°.
Pressure29.83 inHg
Wind24.3 mph SW
Humidity79%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0950° / 40°0.24
50 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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 °
Fern Heath, 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)
Fri, 2048° / 38°0.25
48 °
Fern Heath, Friday, 20 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.25 in
Chance of precipitation57%
Record high60° (2002)
Record low23° (1985)
Sat, 2146° / 36°0.26
46 °
Fern Heath, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.26 in
Chance of precipitation53%
Record high58° (2002)
Record low17° (1977)
Sun, 2246° / 36°0.28
46 °
Fern Heath, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high46°
Average low36°
Average precipitation0.28 in
Chance of precipitation63%
Record high65° (2017)
Record low16° (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 Fern Heath, 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 Fern Heath, 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.