Monthly outlook for Brush Prairie, WA: average high 90.3°, average low 55.3°. That is 6.1° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 24 August (102.9°), the coolest 11 August (50.8°).
90.3°/55.3°
Average high / low
+6.1°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
87°
80.3°
+3.7°
19 August – 28 August
95.7°
77.8°
+10°
29 August – 7 September
at normal
75.9°
—
August records over 66 years
107.6°14 August 2023All-time high
42.8°28 August 2024All-time low
Climate normals and records are computed from the nearest reference point — Hockinson (3 mi).
Mon, 1082° / 53°0
82 °
Brush Prairie, Monday, 10 August
Clear. High 82°, low 53°.
Pressure30.06 inHg
Wind5.4 mph NW
Humidity39%
Visibility6.2 mi
Dew point49°
Tue, 1186° / 51°0
86 °
Brush Prairie, Tuesday, 11 August
Clear. High 86°, low 51°.
Pressure30.09 inHg
Wind4.8 mph NW
Humidity39%
Visibility6.2 mi
Dew point50°
Wed, 1283° / 54°0
83 °
Brush Prairie, Wednesday, 12 August
Clear. High 83°, low 54°.
Pressure30.00 inHg
Wind4.4 mph N
Humidity45%
Visibility6.2 mi
Dew point52°
Thu, 1390° / 52°0
90 °
Brush Prairie, Thursday, 13 August
Clear. High 90°, low 52°.
Pressure29.80 inHg
Wind8.6 mph NW
Humidity31%
Visibility—
Dew point49°
Fri, 1490° / 56°0
90 °
Brush Prairie, Friday, 14 August
Overcast. High 90°, low 56°.
Pressure29.85 inHg
Wind7.9 mph NW
Humidity30%
Visibility—
Dew point50°
Sat, 1588° / 55°0
88 °
Brush Prairie, Saturday, 15 August
Overcast. High 88°, low 55°.
Pressure29.97 inHg
Wind8.9 mph NW
Humidity33%
Visibility—
Dew point50°
Sun, 1691° / 56°0
91 °
Brush Prairie, Sunday, 16 August
Mostly clear. High 91°, low 56°.
Pressure30.00 inHg
Wind7.8 mph NW
Humidity20%
Visibility—
Dew point40°
Mon, 1787° / 55°0
87 °
Brush Prairie, Monday, 17 August
Clear. High 87°, low 55°.
Pressure30.09 inHg
Wind9.5 mph NW
Humidity25%
Visibility—
Dew point43°
Tue, 1889° / 52°0
89 °
Brush Prairie, Tuesday, 18 August
Clear. High 89°, low 52°.
Pressure30.06 inHg
Wind7.4 mph N
Humidity18%
Visibility—
Dew point36°
Wed, 1994° / 58°0
94 °
Brush Prairie, Wednesday, 19 August
Clear. High 94°, low 58°.
Pressure30.00 inHg
Wind8.8 mph NW
Humidity23%
Visibility—
Dew point46°
Thu, 2092° / 58°0
92 °
Brush Prairie, Thursday, 20 August
Clear. High 92°, low 58°.
Pressure30.00 inHg
Wind10.2 mph NW
Humidity28%
Visibility—
Dew point49°
Fri, 2192° / 55°0
92 °
Brush Prairie, Friday, 21 August
Clear. High 92°, low 55°.
Pressure29.94 inHg
Wind9.2 mph NW
Humidity28%
Visibility—
Dew point48°
Sat, 2295° / 56°0
95 °
Brush Prairie, Saturday, 22 August
Clear. High 95°, low 56°.
Pressure29.97 inHg
Wind9.8 mph NW
Humidity26%
Visibility—
Dew point49°
Sun, 2399° / 58°0
99 °
Brush Prairie, Sunday, 23 August
Clear. High 99°, low 58°.
Pressure30.00 inHg
Wind10.5 mph NW
Humidity24%
Visibility—
Dew point49°
Mon, 24103° / 60°0
103 °
Brush Prairie, Monday, 24 August
Partly cloudy. High 103°, low 60°.
Pressure29.83 inHg
Wind6.3 mph NW
Humidity18%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 55°0.07
78 °
Brush Prairie, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.07 in
Chance of precipitation15%
Record high93° (1996)
Record low47° (1975)
Wed, 2679° / 56°0.03
79 °
Brush Prairie, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.03 in
Chance of precipitation8%
Record high98° (1986)
Record low48° (1978)
Thu, 2778° / 57°0.06
78 °
Brush Prairie, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low57°
Average precipitation0.06 in
Chance of precipitation20%
Record high96° (2017)
Record low49° (1969)
Fri, 2879° / 55°0.04
79 °
Brush Prairie, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.04 in
Chance of precipitation10%
Record high99° (2017)
Record low43° (2024)
Sat, 2977° / 56°0.09
77 °
Brush Prairie, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.09 in
Chance of precipitation22%
Record high95° (2022)
Record low47° (1965)
Sun, 3075° / 56°0.08
75 °
Brush Prairie, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high75°
Average low56°
Average precipitation0.08 in
Chance of precipitation32%
Record high100° (2022)
Record low47° (1964)
Mon, 3176° / 55°0.07
76 °
Brush Prairie, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.07 in
Chance of precipitation25%
Record high99° (1987)
Record low47° (2006)
Tue, 0176° / 55°0.09
76 °
Brush Prairie, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.09 in
Chance of precipitation23%
Record high94° (1988)
Record low43° (2021)
Wed, 0277° / 55°0.07
77 °
Brush Prairie, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low55°
Average precipitation0.07 in
Chance of precipitation20%
Record high100° (1988)
Record low45° (1960)
Thu, 0376° / 55°0.07
76 °
Brush Prairie, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.07 in
Chance of precipitation20%
Record high98° (1988)
Record low43° (1964)
Fri, 0476° / 55°0.04
76 °
Brush Prairie, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.04 in
Chance of precipitation20%
Record high104° (2017)
Record low46° (2000)
Sat, 0576° / 55°0.06
76 °
Brush Prairie, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.06 in
Chance of precipitation20%
Record high98° (2024)
Record low47° (1969)
Sun, 0675° / 54°0.11
75 °
Brush Prairie, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high75°
Average low54°
Average precipitation0.11 in
Chance of precipitation20%
Record high92° (2024)
Record low46° (1969)
Mon, 0775° / 55°0.06
75 °
Brush Prairie, Monday, 7 September
Climate normal for this date — 60-year average.
Average high75°
Average low55°
Average precipitation0.06 in
Chance of precipitation18%
Record high95° (2011)
Record low44° (1960)
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 Brush Prairie, 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 Brush Prairie, 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.