Monthly outlook for Chain Hill, WA: average high 82.3°, average low 53.9°. That is 2.4° 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 (89.7°), the coolest 10 August (49.5°).
82.3°/53.9°
Average high / low
+2.4°
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°
78.9°
+1.6°
18 August – 27 August
83°
76.3°
+3.7°
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, 0978° / 51°0
78 °
Chain Hill, Sunday, 9 August
Mostly clear. High 78°, low 51°.
Pressure30.06 inHg
Wind4.7 mph W
Humidity46%
Visibility6.2 mi
Dew point51°
Mon, 1082° / 50°0
82 °
Chain Hill, Monday, 10 August
Clear. High 82°, low 50°.
Pressure30.09 inHg
Wind3.4 mph W
Humidity46%
Visibility6.2 mi
Dew point52°
Tue, 1181° / 51°0
81 °
Chain Hill, Tuesday, 11 August
Clear. High 81°, low 51°.
Pressure30.09 inHg
Wind4.2 mph W
Humidity46%
Visibility6.2 mi
Dew point54°
Wed, 1279° / 54°0.01
79 °
Chain Hill, Wednesday, 12 August
Light rain. High 79°, low 54°.
Pressure30.06 inHg
Wind2.7 mph SW
Humidity70%
Visibility6.2 mi
Dew point56°
Thu, 1377° / 54°0
77 °
Chain Hill, Thursday, 13 August
Overcast. High 77°, low 54°.
Pressure30.00 inHg
Wind5.6 mph W
Humidity52%
Visibility—
Dew point51°
Fri, 1484° / 51°0
84 °
Chain Hill, Friday, 14 August
Overcast. High 84°, low 51°.
Pressure29.97 inHg
Wind6.3 mph N
Humidity35%
Visibility—
Dew point48°
Sat, 1583° / 54°0
83 °
Chain Hill, Saturday, 15 August
Overcast. High 83°, low 54°.
Pressure30.00 inHg
Wind7.7 mph W
Humidity44%
Visibility—
Dew point52°
Sun, 1683° / 52°0
83 °
Chain Hill, Sunday, 16 August
Overcast. High 83°, low 52°.
Pressure30.03 inHg
Wind8 mph W
Humidity31%
Visibility—
Dew point46°
Mon, 1787° / 53°0
87 °
Chain Hill, Monday, 17 August
Mostly clear. High 87°, low 53°.
Pressure30.00 inHg
Wind6 mph W
Humidity24%
Visibility—
Dew point43°
Tue, 1883° / 53°0
83 °
Chain Hill, Tuesday, 18 August
Overcast. High 83°, low 53°.
Pressure30.06 inHg
Wind10.3 mph W
Humidity31%
Visibility—
Dew point47°
Wed, 1975° / 56°0
75 °
Chain Hill, Wednesday, 19 August
Overcast. High 75°, low 56°.
Pressure30.06 inHg
Wind3.2 mph N
Humidity51%
Visibility—
Dew point52°
Thu, 2082° / 58°0
82 °
Chain Hill, Thursday, 20 August
Overcast. High 82°, low 58°.
Pressure30.00 inHg
Wind9 mph W
Humidity40%
Visibility—
Dew point53°
Fri, 2183° / 55°0
83 °
Chain Hill, Friday, 21 August
Mostly clear. High 83°, low 55°.
Pressure30.03 inHg
Wind8.9 mph W
Humidity42%
Visibility—
Dew point55°
Sat, 2285° / 57°0
85 °
Chain Hill, Saturday, 22 August
Overcast. High 85°, low 57°.
Pressure30.00 inHg
Wind7 mph N
Humidity41%
Visibility—
Dew point53°
Sun, 2390° / 55°0
90 °
Chain Hill, Sunday, 23 August
Clear. High 90°, low 55°.
Pressure29.91 inHg
Wind6 mph N
Humidity29%
Visibility—
Dew point47°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2476° / 56°0.06
76 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 °
Chain Hill, 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 Chain Hill, 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 Chain Hill, 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.