Monthly outlook for Cohassett Beach, WA: average high 64°, average low 58.1°. That is 3.5° below the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 24 August (72.1°), the coolest 10 August (55.3°).
64°/58.1°
Average high / low
−3.5°
Below normal
0 / 3
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
63.8°
70.8°
-3.9°
19 August – 28 August
64.2°
69.6°
-3°
29 August – 7 September
at normal
68.9°
—
August records over 66 years
99.5°9 August 1981All-time high
46.4°18 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Markham (7 mi).
Mon, 1069° / 55°0
69 °
Cohassett Beach, Monday, 10 August
Overcast. High 69°, low 55°.
Pressure30.12 inHg
Wind10.1 mph NW
Humidity84%
Visibility6.2 mi
Dew point56°
Tue, 1163° / 58°0
63 °
Cohassett Beach, Tuesday, 11 August
Clear. High 63°, low 58°.
Pressure30.15 inHg
Wind10.2 mph NW
Humidity81%
Visibility6.2 mi
Dew point56°
Wed, 1261° / 58°0
61 °
Cohassett Beach, Wednesday, 12 August
Overcast. High 61°, low 58°.
Pressure30.06 inHg
Wind8.1 mph W
Humidity81%
Visibility6.2 mi
Dew point55°
Thu, 1363° / 57°0
63 °
Cohassett Beach, Thursday, 13 August
Mostly clear. High 63°, low 57°.
Pressure29.91 inHg
Wind11.1 mph NW
Humidity85%
Visibility—
Dew point57°
Fri, 1461° / 59°0
61 °
Cohassett Beach, Friday, 14 August
Overcast. High 61°, low 59°.
Pressure29.94 inHg
Wind9.1 mph W
Humidity86%
Visibility—
Dew point57°
Sat, 1562° / 59°0.01
62 °
Cohassett Beach, Saturday, 15 August
Light rain. High 62°, low 59°.
Pressure30.06 inHg
Wind9.8 mph NW
Humidity82%
Visibility—
Dew point56°
Sun, 1662° / 58°0
62 °
Cohassett Beach, Sunday, 16 August
Mostly clear. High 62°, low 58°.
Pressure30.12 inHg
Wind14.9 mph NW
Humidity84%
Visibility—
Dew point57°
Mon, 1762° / 58°0
62 °
Cohassett Beach, Monday, 17 August
Partly cloudy. High 62°, low 58°.
Pressure30.21 inHg
Wind12.3 mph NW
Humidity82%
Visibility—
Dew point56°
Tue, 1864° / 58°0
64 °
Cohassett Beach, Tuesday, 18 August
Clear. High 64°, low 58°.
Pressure30.15 inHg
Wind12.5 mph NW
Humidity77%
Visibility—
Dew point56°
Wed, 1964° / 59°0
64 °
Cohassett Beach, Wednesday, 19 August
Clear. High 64°, low 59°.
Pressure30.12 inHg
Wind17.6 mph NW
Humidity85%
Visibility—
Dew point58°
Thu, 2062° / 59°0
62 °
Cohassett Beach, Thursday, 20 August
Partly cloudy. High 62°, low 59°.
Pressure30.15 inHg
Wind17.9 mph NW
Humidity87%
Visibility—
Dew point58°
Fri, 2162° / 58°0
62 °
Cohassett Beach, Friday, 21 August
Clear. High 62°, low 58°.
Pressure30.06 inHg
Wind16.3 mph NW
Humidity81%
Visibility—
Dew point56°
Sat, 2263° / 58°0
63 °
Cohassett Beach, Saturday, 22 August
Clear. High 63°, low 58°.
Pressure30.09 inHg
Wind18.1 mph NW
Humidity86%
Visibility—
Dew point58°
Sun, 2362° / 58°0
62 °
Cohassett Beach, Sunday, 23 August
Partly cloudy. High 62°, low 58°.
Pressure30.15 inHg
Wind15 mph NW
Humidity86%
Visibility—
Dew point57°
Mon, 2472° / 59°0
72 °
Cohassett Beach, Monday, 24 August
Clear. High 72°, low 59°.
Pressure29.91 inHg
Wind15.4 mph NW
Humidity63%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2570° / 55°0.05
70 °
Cohassett Beach, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.05 in
Chance of precipitation20%
Record high88° (2016)
Record low49° (2017)
Wed, 2670° / 54°0.05
70 °
Cohassett Beach, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.05 in
Chance of precipitation22%
Record high89° (2016)
Record low49° (1970)
Thu, 2770° / 55°0.08
70 °
Cohassett Beach, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.08 in
Chance of precipitation25%
Record high88° (2019)
Record low50° (1960)
Fri, 2870° / 55°0.06
70 °
Cohassett Beach, Friday, 28 August
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.06 in
Chance of precipitation18%
Record high96° (2017)
Record low48° (2024)
Sat, 2969° / 55°0.07
69 °
Cohassett Beach, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.07 in
Chance of precipitation28%
Record high83° (2007)
Record low46° (1980)
Sun, 3069° / 55°0.09
69 °
Cohassett Beach, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.09 in
Chance of precipitation27%
Record high89° (1987)
Record low49° (1966)
Mon, 3169° / 55°0.07
69 °
Cohassett Beach, Monday, 31 August
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.07 in
Chance of precipitation25%
Record high94° (1987)
Record low48° (1964)
Tue, 0169° / 55°0.1
69 °
Cohassett Beach, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.1 in
Chance of precipitation23%
Record high91° (1988)
Record low45° (1973)
Wed, 0270° / 55°0.07
70 °
Cohassett Beach, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high70°
Average low55°
Average precipitation0.07 in
Chance of precipitation27%
Record high97° (1988)
Record low46° (1960)
Thu, 0369° / 55°0.05
69 °
Cohassett Beach, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high69°
Average low55°
Average precipitation0.05 in
Chance of precipitation18%
Record high87° (1972)
Record low48° (1964)
Fri, 0469° / 54°0.04
69 °
Cohassett Beach, Friday, 4 September
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.04 in
Chance of precipitation15%
Record high90° (2017)
Record low46° (2015)
Sat, 0569° / 54°0.07
69 °
Cohassett Beach, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.07 in
Chance of precipitation23%
Record high95° (2024)
Record low47° (2002)
Sun, 0668° / 54°0.09
68 °
Cohassett Beach, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high68°
Average low54°
Average precipitation0.09 in
Chance of precipitation30%
Record high88° (2014)
Record low46° (1960)
Mon, 0769° / 54°0.04
69 °
Cohassett Beach, Monday, 7 September
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.04 in
Chance of precipitation22%
Record high88° (2012)
Record low46° (1992)
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 Cohassett Beach, 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 Cohassett Beach, 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.