Monthly outlook for Arcadia, WA: average high 82.6°, average low 54.4°. That is 2.6° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.5 inches. The warmest day looks like 23 August (91°), the coolest 11 August (50.6°).
82.6°/54.4°
Average high / low
+2.6°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
82.2°
78.9°
+1.8°
18 August – 27 August
83.2°
76.3°
+3.8°
28 August – 6 September
at normal
74.5°
—
August records over 66 years
101.7°9 August 1981All-time high
46.2°28 August 2024All-time low
Climate normals and records are computed from the nearest reference point — Olympia (11 mi).
Sun, 0977° / 53°0
77 °
Arcadia, Sunday, 9 August
Overcast. High 77°, low 53°.
Pressure30.06 inHg
Wind4.9 mph SW
Humidity45%
Visibility6.2 mi
Dew point51°
Mon, 1085° / 52°0
85 °
Arcadia, Monday, 10 August
Clear. High 85°, low 52°.
Pressure30.09 inHg
Wind2.6 mph SW
Humidity45%
Visibility6.2 mi
Dew point53°
Tue, 1183° / 51°0
83 °
Arcadia, Tuesday, 11 August
Clear. High 83°, low 51°.
Pressure30.09 inHg
Wind3.3 mph SW
Humidity40%
Visibility6.2 mi
Dew point52°
Wed, 1277° / 54°0.01
77 °
Arcadia, Wednesday, 12 August
Light rain. High 77°, low 54°.
Pressure30.06 inHg
Wind3.3 mph SW
Humidity84%
Visibility6.2 mi
Dew point58°
Thu, 1380° / 53°0
80 °
Arcadia, Thursday, 13 August
Overcast. High 80°, low 53°.
Pressure30.00 inHg
Wind8.2 mph W
Humidity46%
Visibility—
Dew point51°
Fri, 1486° / 52°0
86 °
Arcadia, Friday, 14 August
Overcast. High 86°, low 52°.
Pressure29.97 inHg
Wind3.8 mph NE
Humidity34%
Visibility—
Dew point49°
Sat, 1583° / 54°0
83 °
Arcadia, Saturday, 15 August
Overcast. High 83°, low 54°.
Pressure29.97 inHg
Wind9.8 mph W
Humidity38%
Visibility—
Dew point51°
Sun, 1684° / 55°0
84 °
Arcadia, Sunday, 16 August
Partly cloudy. High 84°, low 55°.
Pressure30.03 inHg
Wind8.5 mph W
Humidity29%
Visibility—
Dew point45°
Mon, 1788° / 52°0
88 °
Arcadia, Monday, 17 August
Partly cloudy. High 88°, low 52°.
Pressure30.00 inHg
Wind8.6 mph W
Humidity24%
Visibility—
Dew point43°
Tue, 1883° / 52°0
83 °
Arcadia, Tuesday, 18 August
Overcast. High 83°, low 52°.
Pressure30.06 inHg
Wind11.3 mph W
Humidity32%
Visibility—
Dew point47°
Wed, 1975° / 59°0
75 °
Arcadia, Wednesday, 19 August
Overcast. High 75°, low 59°.
Pressure30.06 inHg
Wind2.2 mph NW
Humidity56%
Visibility—
Dew point53°
Thu, 2082° / 59°0
82 °
Arcadia, Thursday, 20 August
Overcast. High 82°, low 59°.
Pressure30.00 inHg
Wind8.6 mph W
Humidity40%
Visibility—
Dew point53°
Fri, 2183° / 55°0
83 °
Arcadia, Friday, 21 August
Mostly clear. High 83°, low 55°.
Pressure30.03 inHg
Wind9.2 mph W
Humidity42%
Visibility—
Dew point55°
Sat, 2285° / 59°0
85 °
Arcadia, Saturday, 22 August
Overcast. High 85°, low 59°.
Pressure30.00 inHg
Wind6.8 mph NE
Humidity40%
Visibility—
Dew point54°
Sun, 2391° / 55°0
91 °
Arcadia, Sunday, 23 August
Clear. High 91°, low 55°.
Pressure29.91 inHg
Wind4.1 mph W
Humidity27%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2476° / 56°0.06
76 °
Arcadia, Monday, 24 August
Climate normal for this date — 60-year average.
Average high76°
Average low56°
Average precipitation0.06 in
Chance of precipitation18%
Record high92° (1982)
Record low51° (1973)
Tue, 2576° / 56°0.05
76 °
Arcadia, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high76°
Average low56°
Average precipitation0.05 in
Chance of precipitation15%
Record high94° (1996)
Record low50° (1993)
Wed, 2677° / 56°0.03
77 °
Arcadia, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.03 in
Chance of precipitation15%
Record high94° (1986)
Record low51° (1976)
Thu, 2776° / 57°0.07
76 °
Arcadia, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low57°
Average precipitation0.07 in
Chance of precipitation18%
Record high96° (1986)
Record low50° (1960)
Fri, 2876° / 56°0.06
76 °
Arcadia, Friday, 28 August
Climate normal for this date — 60-year average.
Average high76°
Average low56°
Average precipitation0.06 in
Chance of precipitation18%
Record high95° (1967)
Record low46° (2024)
Sat, 2975° / 57°0.08
75 °
Arcadia, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high75°
Average low57°
Average precipitation0.08 in
Chance of precipitation23%
Record high91° (1996)
Record low48° (1965)
Sun, 3074° / 56°0.07
74 °
Arcadia, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.07 in
Chance of precipitation23%
Record high90° (2022)
Record low49° (1977)
Mon, 3174° / 56°0.04
74 °
Arcadia, Monday, 31 August
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.04 in
Chance of precipitation18%
Record high94° (1987)
Record low49° (1964)
Tue, 0174° / 56°0.1
74 °
Arcadia, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.1 in
Chance of precipitation25%
Record high90° (1987)
Record low47° (2021)
Wed, 0275° / 56°0.05
75 °
Arcadia, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high75°
Average low56°
Average precipitation0.05 in
Chance of precipitation23%
Record high96° (1988)
Record low46° (2000)
Thu, 0375° / 56°0.05
75 °
Arcadia, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high75°
Average low56°
Average precipitation0.05 in
Chance of precipitation18%
Record high94° (1988)
Record low49° (1964)
Fri, 0474° / 55°0.04
74 °
Arcadia, Friday, 4 September
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0.04 in
Chance of precipitation17%
Record high91° (2017)
Record low49° (2015)
Sat, 0574° / 55°0.06
74 °
Arcadia, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0.06 in
Chance of precipitation22%
Record high99° (2017)
Record low47° (2015)
Sun, 0673° / 55°0.07
73 °
Arcadia, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (2024)
Record low47° (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 Arcadia, 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 Arcadia, 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.