Monthly outlook for Lake Cassidy, WA: average high 53.9°, average low 40.9°. That is 0.4° above the climate normal for October. Precipitation is expected on 8 days (about 5.6 inches), against a normal of 9 days and 4.5 inches. The warmest day looks like 30 October (61.1°), the coolest 24 October (33.4°).
53.9°/40.9°
Average high / low
+0.4°
Above normal
8 / 9
Wet days / normal
5.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
23 October – 1 November
54.7°
53.8°
+0.5°
2 November – 11 November
52.4°
51.3°
+0.7°
12 November – 21 November
at normal
48.2°
—
October records over 66 years
84.2°1 October 1987All-time high
25.9°29 October 1991All-time low
Climate normals and records are computed from the nearest reference point — Marysville (3 mi).
Sat, 2451° / 33°0
51 °
Lake Cassidy, Saturday, 24 October
Overcast. High 51°, low 33°.
Pressure30.18 inHg
Wind1.4 mph W
Humidity80%
Visibility5.5 mi
Dew point42°
Sun, 2549° / 43°0.34
49 °
Lake Cassidy, Sunday, 25 October
Rain. High 49°, low 43°.
Pressure29.97 inHg
Wind4.1 mph E
Humidity96%
Visibility2.9 mi
Dew point47°
Mon, 2655° / 40°0.11
55 °
Lake Cassidy, Monday, 26 October
Light rain. High 55°, low 40°.
Pressure30.00 inHg
Wind1.3 mph SW
Humidity75%
Visibility6.2 mi
Dew point47°
Tue, 2752° / 41°0.07
52 °
Lake Cassidy, Tuesday, 27 October
Light rain. High 52°, low 41°.
Pressure30.12 inHg
Wind4.6 mph SE
Humidity97%
Visibility—
Dew point48°
Wed, 2853° / 37°0
53 °
Lake Cassidy, Wednesday, 28 October
Overcast. High 53°, low 37°.
Pressure30.15 inHg
Wind6 mph W
Humidity88%
Visibility—
Dew point42°
Thu, 2959° / 37°0
59 °
Lake Cassidy, Thursday, 29 October
Clear. High 59°, low 37°.
Pressure30.15 inHg
Wind3.7 mph NW
Humidity46%
Visibility—
Dew point31°
Fri, 3061° / 38°0
61 °
Lake Cassidy, Friday, 30 October
Mostly clear. High 61°, low 38°.
Pressure29.97 inHg
Wind2.9 mph E
Humidity38%
Visibility—
Dew point26°
Sat, 3158° / 38°0
58 °
Lake Cassidy, Saturday, 31 October
Clear. High 58°, low 38°.
Pressure29.94 inHg
Wind4.6 mph NW
Humidity43%
Visibility—
Dew point29°
Sun, 0156° / 36°0
56 °
Lake Cassidy, Sunday, 1 November
Clear. High 56°, low 36°.
Pressure29.80 inHg
Wind4.4 mph NW
Humidity39%
Visibility—
Dew point26°
Mon, 0258° / 35°0
58 °
Lake Cassidy, Monday, 2 November
Clear. High 58°, low 35°.
Pressure29.85 inHg
Wind3.1 mph E
Humidity46%
Visibility—
Dew point28°
Tue, 0347° / 43°0.42
47 °
Lake Cassidy, Tuesday, 3 November
Rain. High 47°, low 43°.
Pressure29.94 inHg
Wind4.9 mph SE
Humidity96%
Visibility—
Dew point44°
Wed, 0444° / 42°0.63
44 °
Lake Cassidy, Wednesday, 4 November
Rain. High 44°, low 42°.
Pressure29.85 inHg
Wind9.9 mph SE
Humidity90%
Visibility—
Dew point39°
Thu, 0550° / 46°1.12
50 °
Lake Cassidy, Thursday, 5 November
Rain. High 50°, low 46°.
Pressure29.29 inHg
Wind15.9 mph S
Humidity88%
Visibility—
Dew point44°
Fri, 0659° / 53°1.43
59 °
Lake Cassidy, Friday, 6 November
Heavy rain. High 59°, low 53°.
Pressure29.56 inHg
Wind23.7 mph SW
Humidity86%
Visibility—
Dew point55°
Sat, 0757° / 52°1.46
57 °
Lake Cassidy, Saturday, 7 November
Heavy rain. High 57°, low 52°.
Pressure29.56 inHg
Wind15.3 mph S
Humidity96%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0851° / 41°0.28
51 °
Lake Cassidy, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.28 in
Chance of precipitation58%
Record high67° (2016)
Record low30° (1977)
Mon, 0950° / 40°0.27
50 °
Lake Cassidy, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.27 in
Chance of precipitation63%
Record high61° (2025)
Record low28° (1978)
Tue, 1051° / 40°0.25
51 °
Lake Cassidy, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.25 in
Chance of precipitation48%
Record high64° (2016)
Record low27° (1986)
Wed, 1150° / 40°0.29
50 °
Lake Cassidy, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.29 in
Chance of precipitation60%
Record high61° (1996)
Record low25° (1985)
Thu, 1250° / 40°0.35
50 °
Lake Cassidy, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.35 in
Chance of precipitation67%
Record high58° (1976)
Record low26° (1978)
Fri, 1350° / 40°0.36
50 °
Lake Cassidy, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.36 in
Chance of precipitation65%
Record high63° (1967)
Record low25° (1978)
Sat, 1450° / 40°0.31
50 °
Lake Cassidy, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.31 in
Chance of precipitation58%
Record high62° (1999)
Record low26° (1978)
Sun, 1549° / 39°0.34
49 °
Lake Cassidy, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high49°
Average low39°
Average precipitation0.34 in
Chance of precipitation70%
Record high57° (2008)
Record low29° (1978)
Mon, 1648° / 39°0.33
48 °
Lake Cassidy, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low39°
Average precipitation0.33 in
Chance of precipitation75%
Record high61° (1965)
Record low27° (2023)
Tue, 1748° / 38°0.31
48 °
Lake Cassidy, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high48°
Average low38°
Average precipitation0.31 in
Chance of precipitation68%
Record high59° (2008)
Record low26° (2021)
Wed, 1847° / 38°0.26
47 °
Lake Cassidy, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.26 in
Chance of precipitation62%
Record high58° (1965)
Record low21° (1985)
Thu, 1947° / 38°0.38
47 °
Lake Cassidy, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.38 in
Chance of precipitation73%
Record high59° (1987)
Record low23° (1985)
Fri, 2047° / 38°0.32
47 °
Lake Cassidy, Friday, 20 November
Climate normal for this date — 60-year average.
Average high47°
Average low38°
Average precipitation0.32 in
Chance of precipitation63%
Record high61° (2002)
Record low21° (1977)
Sat, 2146° / 37°0.31
46 °
Lake Cassidy, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.31 in
Chance of precipitation57%
Record high58° (2002)
Record low13° (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 Lake Cassidy, 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 Lake Cassidy, 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.