Monthly outlook for Hyak, WA: average high 48.7°, average low 33.9°. That is 0.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.3 inches), against a normal of 9 days and 5.6 inches. The warmest day looks like 21 October (55.6°), the coolest 23 October (25.8°).
48.7°/33.9°
Average high / low
+0.9°
Above normal
5 / 9
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
48.9°
48.3°
+0.4°
31 October – 9 November
48.2°
44.1°
+2.3°
10 November – 19 November
at normal
40.3°
—
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).
Thu, 2250° / 31°0
50 °
Hyak, Thursday, 22 October
Clear. High 50°, low 31°.
Pressure29.88 inHg
Wind5.6 mph W
Humidity59%
Visibility6.2 mi
Dew point37°
Fri, 2342° / 26°0
42 °
Hyak, Friday, 23 October
Overcast. High 42°, low 26°.
Pressure30.33 inHg
Wind4.8 mph NW
Humidity82%
Visibility6.2 mi
Dew point33°
Sat, 2451° / 29°0
51 °
Hyak, Saturday, 24 October
Overcast. High 51°, low 29°.
Pressure30.15 inHg
Wind3.3 mph SE
Humidity44%
Visibility6.2 mi
Dew point18°
Sun, 2551° / 34°0
51 °
Hyak, Sunday, 25 October
Overcast. High 51°, low 34°.
Pressure30.12 inHg
Wind7.8 mph SE
Humidity47%
Visibility6.2 mi
Dew point21°
Mon, 2653° / 37°0
53 °
Hyak, Monday, 26 October
Overcast. High 53°, low 37°.
Pressure30.21 inHg
Wind9.3 mph SE
Humidity49%
Visibility—
Dew point28°
Tue, 2749° / 38°0.09
49 °
Hyak, Tuesday, 27 October
Light rain. High 49°, low 38°.
Pressure30.21 inHg
Wind7.4 mph E
Humidity83%
Visibility—
Dew point37°
Wed, 2854° / 37°0
54 °
Hyak, Wednesday, 28 October
Overcast. High 54°, low 37°.
Pressure30.12 inHg
Wind7.3 mph E
Humidity40%
Visibility—
Dew point23°
Thu, 2947° / 37°0.05
47 °
Hyak, Thursday, 29 October
Light rain. High 47°, low 37°.
Pressure29.94 inHg
Wind7 mph W
Humidity51%
Visibility—
Dew point28°
Fri, 3038° / 34°0.36
38 °
Hyak, Friday, 30 October
Snow. High 38°, low 34°.
Pressure29.80 inHg
Wind8.5 mph W
Humidity98%
Visibility—
Dew point36°
Sat, 3138° / 29°0.03
38 °
Hyak, Saturday, 31 October
Snow. High 38°, low 29°.
Pressure30.03 inHg
Wind5 mph W
Humidity87%
Visibility—
Dew point32°
Sun, 0150° / 29°0
50 °
Hyak, Sunday, 1 November
Overcast. High 50°, low 29°.
Pressure30.18 inHg
Wind6.2 mph E
Humidity52%
Visibility—
Dew point25°
Mon, 0253° / 32°0
53 °
Hyak, Monday, 2 November
Overcast. High 53°, low 32°.
Pressure30.27 inHg
Wind6 mph E
Humidity46%
Visibility—
Dew point25°
Tue, 0347° / 39°0.36
47 °
Hyak, Tuesday, 3 November
Rain. High 47°, low 39°.
Pressure30.15 inHg
Wind5.3 mph E
Humidity43%
Visibility—
Dew point25°
Wed, 0451° / 42°0.02
51 °
Hyak, Wednesday, 4 November
Light rain. High 51°, low 42°.
Pressure30.00 inHg
Wind6 mph E
Humidity82%
Visibility—
Dew point43°
Thu, 0551° / 43°0.37
51 °
Hyak, Thursday, 5 November
Rain. High 51°, low 43°.
Pressure29.88 inHg
Wind7.6 mph E
Humidity72%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Tue, 1739° / 30°0.44
39 °
Hyak, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high39°
Average low30°
Average precipitation0.44 in
Chance of precipitation65%
Record high58° (2008)
Record low8° (2000)
Wed, 1838° / 29°0.33
38 °
Hyak, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high38°
Average low29°
Average precipitation0.33 in
Chance of precipitation62%
Record high51° (2005)
Record low9° (1975)
Thu, 1938° / 29°0.44
38 °
Hyak, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low29°
Average precipitation0.44 in
Chance of precipitation73%
Record high48° (1967)
Record low10° (1977)
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.