Monthly outlook for Allison, WA: average high 82.3°, average low 54.7°. That is 3.4° 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 (88.2°), the coolest 10 August (50°).
82.3°/54.7°
Average high / low
+3.4°
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
81.8°
77.1°
+2.6°
18 August – 27 August
83.3°
74.6°
+4.8°
28 August – 6 September
at normal
72.8°
—
August records over 66 years
98.4°9 August 1981All-time high
46°22 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Tacoma (8 mi).
Sun, 0977° / 52°0
77 °
Allison, Sunday, 9 August
Mostly clear. High 77°, low 52°.
Pressure30.03 inHg
Wind3.7 mph W
Humidity41%
Visibility6.2 mi
Dew point50°
Mon, 1083° / 50°0
83 °
Allison, Monday, 10 August
Clear. High 83°, low 50°.
Pressure30.09 inHg
Wind3.3 mph W
Humidity43%
Visibility6.2 mi
Dew point51°
Tue, 1185° / 51°0
85 °
Allison, Tuesday, 11 August
Clear. High 85°, low 51°.
Pressure30.09 inHg
Wind3.1 mph W
Humidity40%
Visibility6.2 mi
Dew point51°
Wed, 1277° / 57°0
77 °
Allison, Wednesday, 12 August
Overcast. High 77°, low 57°.
Pressure30.06 inHg
Wind6.1 mph SW
Humidity78%
Visibility6.2 mi
Dew point57°
Thu, 1377° / 55°0
77 °
Allison, Thursday, 13 August
Overcast. High 77°, low 55°.
Pressure30.00 inHg
Wind4.1 mph NW
Humidity44%
Visibility—
Dew point49°
Fri, 1482° / 51°0
82 °
Allison, Friday, 14 August
Overcast. High 82°, low 51°.
Pressure29.94 inHg
Wind7.9 mph N
Humidity33%
Visibility—
Dew point46°
Sat, 1582° / 55°0
82 °
Allison, Saturday, 15 August
Overcast. High 82°, low 55°.
Pressure30.00 inHg
Wind6.9 mph W
Humidity46%
Visibility—
Dew point51°
Sun, 1685° / 54°0
85 °
Allison, Sunday, 16 August
Overcast. High 85°, low 54°.
Pressure30.03 inHg
Wind6.5 mph NW
Humidity27%
Visibility—
Dew point43°
Mon, 1788° / 55°0
88 °
Allison, Monday, 17 August
Partly cloudy. High 88°, low 55°.
Pressure30.00 inHg
Wind6.5 mph NW
Humidity24%
Visibility—
Dew point42°
Tue, 1884° / 55°0
84 °
Allison, Tuesday, 18 August
Overcast. High 84°, low 55°.
Pressure30.03 inHg
Wind7 mph W
Humidity27%
Visibility—
Dew point44°
Wed, 1976° / 57°0
76 °
Allison, Wednesday, 19 August
Overcast. High 76°, low 57°.
Pressure30.03 inHg
Wind4.5 mph NW
Humidity40%
Visibility—
Dew point48°
Thu, 2084° / 57°0
84 °
Allison, Thursday, 20 August
Overcast. High 84°, low 57°.
Pressure30.00 inHg
Wind6.9 mph NW
Humidity38%
Visibility—
Dew point52°
Fri, 2185° / 57°0
85 °
Allison, Friday, 21 August
Mostly clear. High 85°, low 57°.
Pressure30.03 inHg
Wind6.7 mph W
Humidity35%
Visibility—
Dew point50°
Sat, 2282° / 57°0
82 °
Allison, Saturday, 22 August
Overcast. High 82°, low 57°.
Pressure30.00 inHg
Wind7.7 mph N
Humidity40%
Visibility—
Dew point52°
Sun, 2388° / 56°0
88 °
Allison, Sunday, 23 August
Clear. High 88°, low 56°.
Pressure29.88 inHg
Wind6.1 mph N
Humidity29%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2474° / 56°0.06
74 °
Allison, Monday, 24 August
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.06 in
Chance of precipitation17%
Record high90° (2025)
Record low50° (2012)
Tue, 2574° / 55°0.05
74 °
Allison, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high74°
Average low55°
Average precipitation0.05 in
Chance of precipitation17%
Record high89° (2025)
Record low48° (1995)
Wed, 2675° / 55°0.03
75 °
Allison, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high75°
Average low55°
Average precipitation0.03 in
Chance of precipitation18%
Record high89° (2016)
Record low49° (1969)
Thu, 2775° / 56°0.06
75 °
Allison, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high75°
Average low56°
Average precipitation0.06 in
Chance of precipitation18%
Record high92° (1986)
Record low49° (1962)
Fri, 2874° / 56°0.04
74 °
Allison, Friday, 28 August
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.04 in
Chance of precipitation15%
Record high92° (1967)
Record low46° (1960)
Sat, 2974° / 56°0.09
74 °
Allison, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high74°
Average low56°
Average precipitation0.09 in
Chance of precipitation23%
Record high88° (1996)
Record low49° (1969)
Sun, 3073° / 56°0.07
73 °
Allison, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.07 in
Chance of precipitation25%
Record high86° (1987)
Record low46° (1965)
Mon, 3172° / 55°0.05
72 °
Allison, Monday, 31 August
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.05 in
Chance of precipitation23%
Record high91° (1987)
Record low47° (2008)
Tue, 0172° / 55°0.07
72 °
Allison, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.07 in
Chance of precipitation25%
Record high89° (1987)
Record low47° (1964)
Wed, 0273° / 55°0.06
73 °
Allison, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.06 in
Chance of precipitation25%
Record high93° (1988)
Record low46° (2000)
Thu, 0373° / 55°0.05
73 °
Allison, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.05 in
Chance of precipitation18%
Record high92° (1988)
Record low46° (1975)
Fri, 0473° / 55°0.02
73 °
Allison, Friday, 4 September
Climate normal for this date — 60-year average.
Average high73°
Average low55°
Average precipitation0.02 in
Chance of precipitation15%
Record high87° (2017)
Record low47° (1965)
Sat, 0572° / 55°0.05
72 °
Allison, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.05 in
Chance of precipitation22%
Record high94° (2017)
Record low47° (2015)
Sun, 0672° / 54°0.07
72 °
Allison, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high72°
Average low54°
Average precipitation0.07 in
Chance of precipitation23%
Record high91° (2017)
Record low46° (1969)
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 Allison, 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 Allison, 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.