Monthly outlook for Medical Lake, WA: average high 90.7°, average low 63.3°. That is 4.7° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 24 August (99.2°), the coolest 9 August (53.3°).
90.7°/63.3°
Average high / low
+4.7°
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
87.6°
83.5°
+2.3°
19 August – 28 August
95.9°
79.8°
+9°
29 August – 7 September
at normal
77.5°
—
August records over 66 years
104.9°4 August 1961All-time high
41.4°24 August 1992All-time low
Climate normals and records are computed from the nearest reference point — Airway Heights (7 mi).
Mon, 1082° / 55°0
82 °
Medical Lake, Monday, 10 August
Clear. High 82°, low 55°.
Pressure29.88 inHg
Wind10.4 mph S
Humidity23%
Visibility6.2 mi
Dew point40°
Tue, 1187° / 60°0
87 °
Medical Lake, Tuesday, 11 August
Clear. High 87°, low 60°.
Pressure29.94 inHg
Wind9.9 mph SW
Humidity23%
Visibility6.2 mi
Dew point40°
Wed, 1285° / 61°0
85 °
Medical Lake, Wednesday, 12 August
Overcast. High 85°, low 61°.
Pressure29.83 inHg
Wind8.6 mph S
Humidity28%
Visibility6.2 mi
Dew point43°
Thu, 1386° / 60°0
86 °
Medical Lake, Thursday, 13 August
Clear. High 86°, low 60°.
Pressure29.83 inHg
Wind10.9 mph NE
Humidity38%
Visibility—
Dew point47°
Fri, 1487° / 59°0
87 °
Medical Lake, Friday, 14 August
Clear. High 87°, low 59°.
Pressure29.88 inHg
Wind11.5 mph NE
Humidity33%
Visibility—
Dew point44°
Sat, 1593° / 64°0
93 °
Medical Lake, Saturday, 15 August
Partly cloudy. High 93°, low 64°.
Pressure29.94 inHg
Wind7.1 mph NE
Humidity18%
Visibility—
Dew point34°
Sun, 1695° / 68°0
95 °
Medical Lake, Sunday, 16 August
Clear. High 95°, low 68°.
Pressure29.94 inHg
Wind12.4 mph W
Humidity24%
Visibility—
Dew point44°
Mon, 1789° / 68°0
89 °
Medical Lake, Monday, 17 August
Partly cloudy. High 89°, low 68°.
Pressure29.97 inHg
Wind20.6 mph SW
Humidity22%
Visibility—
Dew point38°
Tue, 1887° / 61°0
87 °
Medical Lake, Tuesday, 18 August
Clear. High 87°, low 61°.
Pressure30.03 inHg
Wind11.5 mph S
Humidity26%
Visibility—
Dew point39°
Wed, 1993° / 65°0
93 °
Medical Lake, Wednesday, 19 August
Clear. High 93°, low 65°.
Pressure30.00 inHg
Wind14.5 mph SW
Humidity23%
Visibility—
Dew point40°
Thu, 2095° / 67°0
95 °
Medical Lake, Thursday, 20 August
Clear. High 95°, low 67°.
Pressure29.94 inHg
Wind13.2 mph W
Humidity18%
Visibility—
Dew point36°
Fri, 2193° / 63°0
93 °
Medical Lake, Friday, 21 August
Clear. High 93°, low 63°.
Pressure29.94 inHg
Wind6.9 mph S
Humidity18%
Visibility—
Dew point32°
Sat, 2297° / 67°0
97 °
Medical Lake, Saturday, 22 August
Mostly clear. High 97°, low 67°.
Pressure29.91 inHg
Wind11 mph SW
Humidity13%
Visibility—
Dew point29°
Sun, 2399° / 70°0
99 °
Medical Lake, Sunday, 23 August
Clear. High 99°, low 70°.
Pressure30.00 inHg
Wind9.3 mph W
Humidity16%
Visibility—
Dew point35°
Mon, 2499° / 72°0
99 °
Medical Lake, Monday, 24 August
Overcast. High 99°, low 72°.
Pressure29.94 inHg
Wind4.3 mph W
Humidity14%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2579° / 56°0.03
79 °
Medical Lake, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.03 in
Chance of precipitation10%
Record high95° (2025)
Record low43° (1992)
Wed, 2680° / 55°0.02
80 °
Medical Lake, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.02 in
Chance of precipitation10%
Record high95° (1996)
Record low46° (1976)
Thu, 2780° / 56°0.02
80 °
Medical Lake, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.02 in
Chance of precipitation12%
Record high93° (1986)
Record low43° (1960)
Fri, 2879° / 55°0.02
79 °
Medical Lake, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.02 in
Chance of precipitation10%
Record high97° (2009)
Record low44° (1960)
Sat, 2980° / 56°0.01
80 °
Medical Lake, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.01 in
Chance of precipitation13%
Record high94° (2017)
Record low42° (1965)
Sun, 3078° / 56°0.03
78 °
Medical Lake, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low56°
Average precipitation0.03 in
Chance of precipitation12%
Record high93° (1967)
Record low43° (1965)
Mon, 3177° / 55°0.02
77 °
Medical Lake, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low55°
Average precipitation0.02 in
Chance of precipitation17%
Record high101° (2022)
Record low41° (1964)
Tue, 0178° / 55°0.02
78 °
Medical Lake, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.02 in
Chance of precipitation10%
Record high96° (2025)
Record low42° (1999)
Wed, 0277° / 54°0.02
77 °
Medical Lake, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low54°
Average precipitation0.02 in
Chance of precipitation10%
Record high99° (2025)
Record low44° (1999)
Thu, 0378° / 54°0.02
78 °
Medical Lake, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low54°
Average precipitation0.02 in
Chance of precipitation13%
Record high99° (1988)
Record low43° (1980)
Fri, 0478° / 54°0.01
78 °
Medical Lake, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low54°
Average precipitation0.01 in
Chance of precipitation12%
Record high97° (1988)
Record low43° (2015)
Sat, 0577° / 54°0.02
77 °
Medical Lake, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low54°
Average precipitation0.02 in
Chance of precipitation7%
Record high95° (1988)
Record low43° (1969)
Sun, 0676° / 53°0.02
76 °
Medical Lake, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low53°
Average precipitation0.02 in
Chance of precipitation15%
Record high93° (2024)
Record low39° (1960)
Mon, 0776° / 53°0.02
76 °
Medical Lake, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
Average low53°
Average precipitation0.02 in
Chance of precipitation10%
Record high94° (2024)
Record low41° (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 Medical Lake, 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 Medical Lake, 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.