Monthly outlook for Minnehaha, WA: average high 78.5°, average low 56.5°. That is 0.7° below the climate normal for August. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 15 August (88.5°), the coolest 10 August (52.1°).
78.5°/56.5°
Average high / low
−0.7°
Below normal
3 / 2
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.5°
80.9°
+0.9°
19 August – 28 August
71.9°
78.3°
-3.6°
29 August – 7 September
at normal
76.6°
—
August records over 66 years
107.6°14 August 2023All-time high
46°18 August 1973All-time low
Mon, 1083° / 52°0
83 °
Minnehaha, Monday, 10 August
Clear. High 83°, low 52°.
Pressure30.09 inHg
Wind5.4 mph NW
Humidity38%
Visibility6.2 mi
Dew point48°
Tue, 1186° / 52°0
86 °
Minnehaha, Tuesday, 11 August
Clear. High 86°, low 52°.
Pressure30.09 inHg
Wind5.2 mph N
Humidity38%
Visibility6.2 mi
Dew point49°
Wed, 1282° / 56°0
82 °
Minnehaha, Wednesday, 12 August
Clear. High 82°, low 56°.
Pressure30.00 inHg
Wind5 mph N
Humidity40%
Visibility6.2 mi
Dew point50°
Thu, 1388° / 54°0
88 °
Minnehaha, Thursday, 13 August
Clear. High 88°, low 54°.
Pressure29.83 inHg
Wind9.1 mph NW
Humidity31%
Visibility—
Dew point47°
Fri, 1487° / 57°0
87 °
Minnehaha, Friday, 14 August
Overcast. High 87°, low 57°.
Pressure29.91 inHg
Wind8.9 mph NW
Humidity31%
Visibility—
Dew point48°
Sat, 1589° / 58°0
89 °
Minnehaha, Saturday, 15 August
Clear. High 89°, low 58°.
Pressure29.94 inHg
Wind10.2 mph NW
Humidity31%
Visibility—
Dew point49°
Sun, 1685° / 57°0
85 °
Minnehaha, Sunday, 16 August
Overcast. High 85°, low 57°.
Pressure29.97 inHg
Wind7.3 mph NW
Humidity28%
Visibility—
Dew point43°
Mon, 1763° / 57°0.19
63 °
Minnehaha, Monday, 17 August
Light rain. High 63°, low 57°.
Pressure30.06 inHg
Wind5.2 mph SE
Humidity96%
Visibility—
Dew point58°
Tue, 1878° / 57°0.01
78 °
Minnehaha, Tuesday, 18 August
Light rain. High 78°, low 57°.
Pressure30.00 inHg
Wind3.8 mph W
Humidity50%
Visibility—
Dew point52°
Wed, 1976° / 61°0.01
76 °
Minnehaha, Wednesday, 19 August
Light rain. High 76°, low 61°.
Pressure29.97 inHg
Wind4.8 mph NW
Humidity61%
Visibility—
Dew point57°
Thu, 2072° / 61°0.02
72 °
Minnehaha, Thursday, 20 August
Light rain. High 72°, low 61°.
Pressure29.94 inHg
Wind4.3 mph SW
Humidity64%
Visibility—
Dew point58°
Fri, 2178° / 61°0
78 °
Minnehaha, Friday, 21 August
Overcast. High 78°, low 61°.
Pressure29.94 inHg
Wind8.2 mph NW
Humidity36%
Visibility—
Dew point47°
Sat, 2271° / 57°0.39
71 °
Minnehaha, Saturday, 22 August
Rain. High 71°, low 57°.
Pressure30.06 inHg
Wind7.7 mph NW
Humidity73%
Visibility—
Dew point58°
Sun, 2375° / 53°0
75 °
Minnehaha, Sunday, 23 August
Overcast. High 75°, low 53°.
Pressure30.06 inHg
Wind7.3 mph N
Humidity44%
Visibility—
Dew point48°
Mon, 2458° / 54°0.2
58 °
Minnehaha, Monday, 24 August
Rain. High 58°, low 54°.
Pressure29.91 inHg
Wind4.9 mph SE
Humidity94%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2578° / 55°0.07
78 °
Minnehaha, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.07 in
Chance of precipitation15%
Record high93° (2023)
Record low47° (1975)
Wed, 2679° / 56°0.03
79 °
Minnehaha, 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° (1993)
Thu, 2778° / 57°0.06
78 °
Minnehaha, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low57°
Average precipitation0.06 in
Chance of precipitation20%
Record high96° (1972)
Record low49° (1960)
Fri, 2879° / 56°0.04
79 °
Minnehaha, Friday, 28 August
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.04 in
Chance of precipitation10%
Record high98° (1967)
Record low47° (2024)
Sat, 2978° / 57°0.08
78 °
Minnehaha, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low57°
Average precipitation0.08 in
Chance of precipitation20%
Record high92° (2007)
Record low47° (1965)
Sun, 3076° / 56°0.08
76 °
Minnehaha, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high76°
Average low56°
Average precipitation0.08 in
Chance of precipitation32%
Record high98° (2022)
Record low48° (1965)
Mon, 3176° / 56°0.07
76 °
Minnehaha, Monday, 31 August
Climate normal for this date — 60-year average.
Average high76°
Average low56°
Average precipitation0.07 in
Chance of precipitation25%
Record high100° (1987)
Record low47° (1964)
Tue, 0176° / 55°0.09
76 °
Minnehaha, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.09 in
Chance of precipitation22%
Record high95° (1988)
Record low47° (1999)
Wed, 0277° / 55°0.07
77 °
Minnehaha, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high77°
Average low55°
Average precipitation0.07 in
Chance of precipitation20%
Record high101° (1988)
Record low45° (1960)
Thu, 0377° / 55°0.07
77 °
Minnehaha, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high77°
Average low55°
Average precipitation0.07 in
Chance of precipitation18%
Record high96° (1988)
Record low44° (1964)
Fri, 0477° / 55°0.04
77 °
Minnehaha, Friday, 4 September
Climate normal for this date — 60-year average.
Average high77°
Average low55°
Average precipitation0.04 in
Chance of precipitation20%
Record high101° (2017)
Record low47° (2000)
Sat, 0576° / 55°0.06
76 °
Minnehaha, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.06 in
Chance of precipitation20%
Record high99° (2024)
Record low47° (1969)
Sun, 0676° / 55°0.11
76 °
Minnehaha, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high76°
Average low55°
Average precipitation0.11 in
Chance of precipitation20%
Record high94° (2024)
Record low45° (1969)
Mon, 0776° / 55°0.06
76 °
Minnehaha, Monday, 7 September
Climate normal for this date — 60-year average.
Average high76°
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 Minnehaha, 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 Minnehaha, 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.