Monthly outlook for Hyak, WA: average high 49.7°, average low 35.5°. That is 0.8° below the climate normal for October. Precipitation is expected on 3 days (about 1.3 inches), against a normal of 8 days and 4.6 inches. The warmest day looks like 16 October (63.4°), the coolest 23 October (31.1°).
49.7°/35.5°
Average high / low
−0.8°
Below normal
3 / 8
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
49.8°
52.8°
-1.6°
23 October – 1 November
49.5°
47.1°
+1.4°
2 November – 11 November
at normal
43.5°
—
October records over 66 years
80.6°1 October 1987All-time high
2.1°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Snoqualmie Pass (1 mi).
Wed, 1457° / 39°0.01
57 °
Hyak, Wednesday, 14 October
Light rain. High 57°, low 39°.
Pressure30.30 inHg
Wind4 mph W
Humidity80%
Visibility6.2 mi
Dew point45°
Thu, 1559° / 40°0
59 °
Hyak, Thursday, 15 October
Mostly clear. High 59°, low 40°.
Pressure30.42 inHg
Wind10.4 mph SE
Humidity49%
Visibility3.5 mi
Dew point38°
Fri, 1663° / 43°0
63 °
Hyak, Friday, 16 October
Mostly clear. High 63°, low 43°.
Pressure30.18 inHg
Wind6.5 mph SE
Humidity38%
Visibility6.2 mi
Dew point36°
Sat, 1744° / 32°0.35
44 °
Hyak, Saturday, 17 October
Rain. High 44°, low 32°.
Pressure30.24 inHg
Wind8.7 mph W
Humidity97%
Visibility—
Dew point41°
Sun, 1853° / 31°0
53 °
Hyak, Sunday, 18 October
Overcast. High 53°, low 31°.
Pressure29.97 inHg
Wind5 mph SE
Humidity44%
Visibility—
Dew point26°
Mon, 1941° / 34°0.13
41 °
Hyak, Monday, 19 October
Light rain. High 41°, low 34°.
Pressure29.85 inHg
Wind3.9 mph NW
Humidity80%
Visibility—
Dew point34°
Tue, 2044° / 34°0.04
44 °
Hyak, Tuesday, 20 October
Light rain. High 44°, low 34°.
Pressure30.00 inHg
Wind3.9 mph NW
Humidity76%
Visibility—
Dew point36°
Wed, 2145° / 32°0.01
45 °
Hyak, Wednesday, 21 October
Light rain. High 45°, low 32°.
Pressure30.21 inHg
Wind4.9 mph W
Humidity74%
Visibility—
Dew point33°
Thu, 2240° / 35°0.78
40 °
Hyak, Thursday, 22 October
Rain. High 40°, low 35°.
Pressure30.18 inHg
Wind8.2 mph W
Humidity98%
Visibility—
Dew point37°
Fri, 2345° / 31°0
45 °
Hyak, Friday, 23 October
Partly cloudy. High 45°, low 31°.
Pressure30.53 inHg
Wind4 mph W
Humidity79%
Visibility—
Dew point34°
Sat, 2453° / 34°0
53 °
Hyak, Saturday, 24 October
Mostly clear. High 53°, low 34°.
Pressure30.47 inHg
Wind4.3 mph W
Humidity53%
Visibility—
Dew point30°
Sun, 2558° / 39°0
58 °
Hyak, Sunday, 25 October
Clear. High 58°, low 39°.
Pressure30.33 inHg
Wind6.2 mph E
Humidity58%
Visibility—
Dew point36°
Mon, 2654° / 39°0.01
54 °
Hyak, Monday, 26 October
Light rain. High 54°, low 39°.
Pressure30.06 inHg
Wind5.5 mph W
Humidity62%
Visibility—
Dew point37°
Tue, 2741° / 37°0.03
41 °
Hyak, Tuesday, 27 October
Light rain. High 41°, low 37°.
Pressure30.12 inHg
Wind6 mph W
Humidity95%
Visibility—
Dew point37°
Wed, 2846° / 35°0
46 °
Hyak, Wednesday, 28 October
Overcast. High 46°, low 35°.
Pressure30.21 inHg
Wind3.2 mph NW
Humidity71%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2946° / 34°0.27
46 °
Hyak, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.27 in
Chance of precipitation62%
Record high65° (1962)
Record low9° (1971)
Fri, 3045° / 34°0.37
45 °
Hyak, Friday, 30 October
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.37 in
Chance of precipitation57%
Record high58° (1962)
Record low8° (1972)
Sat, 3145° / 34°0.44
45 °
Hyak, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.44 in
Chance of precipitation67%
Record high61° (1962)
Record low19° (1978)
Sun, 0145° / 34°0.41
45 °
Hyak, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.41 in
Chance of precipitation62%
Record high62° (1962)
Record low20° (2006)
Mon, 0246° / 33°0.3
46 °
Hyak, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.3 in
Chance of precipitation58%
Record high61° (1962)
Record low11° (1973)
Tue, 0345° / 34°0.39
45 °
Hyak, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.39 in
Chance of precipitation60%
Record high61° (1962)
Record low9° (1973)
Wed, 0446° / 35°0.54
46 °
Hyak, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low35°
Average precipitation0.54 in
Chance of precipitation65%
Record high62° (1976)
Record low18° (1977)
Thu, 0544° / 33°0.34
44 °
Hyak, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.34 in
Chance of precipitation65%
Record high58° (1987)
Record low6° (1971)
Fri, 0643° / 33°0.45
43 °
Hyak, Friday, 6 November
Climate normal for this date — 60-year average.
Average high43°
Average low33°
Average precipitation0.45 in
Chance of precipitation67%
Record high59° (2012)
Record low16° (1971)
Sat, 0743° / 33°0.43
43 °
Hyak, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high43°
Average low33°
Average precipitation0.43 in
Chance of precipitation67%
Record high54° (2004)
Record low22° (2017)
Sun, 0843° / 32°0.34
43 °
Hyak, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.34 in
Chance of precipitation60%
Record high61° (2016)
Record low19° (1977)
Mon, 0942° / 32°0.35
42 °
Hyak, Monday, 9 November
Climate normal for this date — 60-year average.
Average high42°
Average low32°
Average precipitation0.35 in
Chance of precipitation67%
Record high55° (1976)
Record low11° (1982)
Tue, 1042° / 31°0.32
42 °
Hyak, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.32 in
Chance of precipitation57%
Record high57° (2016)
Record low8° (1986)
Wed, 1142° / 31°0.36
42 °
Hyak, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low31°
Average precipitation0.36 in
Chance of precipitation63%
Record high57° (2016)
Record low3° (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 Hyak, 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 Hyak, 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.