Monthly outlook for Hyak, WA: average high 45.2°, average low 30.7°. That is 1.8° below the climate normal for October. Precipitation is expected on 7 days (about 3.5 inches), against a normal of 9 days and 5.2 inches. The warmest day looks like 21 October (63.7°), the coolest 30 October (21.9°).
45.2°/30.7°
Average high / low
−1.8°
Below normal
7 / 9
Wet days / normal
3.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
49.2°
50.4°
-0.6°
28 October – 6 November
38.5°
45°
-3.6°
7 November – 16 November
at normal
41.6°
—
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).
Mon, 1958° / 36°0
58 °
Hyak, Monday, 19 October
Overcast. High 58°, low 36°.
Pressure29.97 inHg
Wind4.1 mph NW
Humidity53%
Visibility6.2 mi
Dew point31°
Tue, 2059° / 35°0
59 °
Hyak, Tuesday, 20 October
Overcast. High 59°, low 35°.
Pressure30.03 inHg
Wind6.4 mph SE
Humidity39%
Visibility6.2 mi
Dew point29°
Wed, 2164° / 40°0
64 °
Hyak, Wednesday, 21 October
Clear. High 64°, low 40°.
Pressure29.94 inHg
Wind2.8 mph SE
Humidity32%
Visibility6.2 mi
Dew point32°
Thu, 2247° / 35°0.04
47 °
Hyak, Thursday, 22 October
Light rain. High 47°, low 35°.
Pressure29.91 inHg
Wind8.1 mph NW
Humidity55%
Visibility—
Dew point31°
Fri, 2337° / 31°0.15
37 °
Hyak, Friday, 23 October
Snow. High 37°, low 31°.
Pressure30.30 inHg
Wind8.2 mph W
Humidity93%
Visibility—
Dew point32°
Sat, 2453° / 31°0
53 °
Hyak, Saturday, 24 October
Overcast. High 53°, low 31°.
Pressure30.30 inHg
Wind3.8 mph E
Humidity27%
Visibility—
Dew point13°
Sun, 2539° / 36°0.31
39 °
Hyak, Sunday, 25 October
Rain. High 39°, low 36°.
Pressure30.15 inHg
Wind4.8 mph W
Humidity92%
Visibility—
Dew point37°
Mon, 2642° / 30°0.01
42 °
Hyak, Monday, 26 October
Light rain. High 42°, low 30°.
Pressure30.03 inHg
Wind4.1 mph NW
Humidity72%
Visibility—
Dew point32°
Tue, 2743° / 29°0
43 °
Hyak, Tuesday, 27 October
Mostly clear. High 43°, low 29°.
Pressure30.03 inHg
Wind6.1 mph W
Humidity70%
Visibility—
Dew point29°
Wed, 2834° / 33°0.1
34 °
Hyak, Wednesday, 28 October
Snow. High 34°, low 33°.
Pressure30.03 inHg
Wind5.2 mph W
Humidity90%
Visibility—
Dew point31°
Thu, 2932° / 23°0.26
32 °
Hyak, Thursday, 29 October
Snow. High 32°, low 23°.
Pressure30.06 inHg
Wind4.8 mph W
Humidity98%
Visibility—
Dew point31°
Fri, 3040° / 22°0
40 °
Hyak, Friday, 30 October
Clear. High 40°, low 22°.
Pressure30.27 inHg
Wind3.7 mph E
Humidity57%
Visibility—
Dew point20°
Sat, 3146° / 25°0
46 °
Hyak, Saturday, 31 October
Mostly clear. High 46°, low 25°.
Pressure30.09 inHg
Wind6.1 mph E
Humidity46%
Visibility—
Dew point19°
Sun, 0143° / 29°0.05
43 °
Hyak, Sunday, 1 November
Light snow. High 43°, low 29°.
Pressure29.83 inHg
Wind6 mph E
Humidity63%
Visibility—
Dew point25°
Mon, 0235° / 31°2.59
35 °
Hyak, Monday, 2 November
Snow. High 35°, low 31°.
Pressure29.77 inHg
Wind6.5 mph SE
Humidity100%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Thu, 1242° / 32°0.43
42 °
Hyak, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high42°
Average low32°
Average precipitation0.43 in
Chance of precipitation68%
Record high56° (1990)
Record low4° (1985)
Fri, 1341° / 31°0.47
41 °
Hyak, Friday, 13 November
Climate normal for this date — 60-year average.
Average high41°
Average low31°
Average precipitation0.47 in
Chance of precipitation67%
Record high58° (1969)
Record low13° (1985)
Sat, 1441° / 31°0.39
41 °
Hyak, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low31°
Average precipitation0.39 in
Chance of precipitation63%
Record high59° (1969)
Record low5° (1985)
Sun, 1541° / 30°0.38
41 °
Hyak, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.38 in
Chance of precipitation70%
Record high57° (2008)
Record low9° (2000)
Mon, 1640° / 31°0.43
40 °
Hyak, Monday, 16 November
Climate normal for this date — 60-year average.
Average high40°
Average low31°
Average precipitation0.43 in
Chance of precipitation73%
Record high58° (2008)
Record low9° (2000)
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.