Monthly outlook for Highland, WA: average high 94.8°, average low 64.8°. That is 2.1° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.1 inches. The warmest day looks like 16 August (102.7°), the coolest 10 August (59.1°).
94.8°/64.8°
Average high / low
+2.1°
Above normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
95.1°
92.4°
+1.5°
18 August – 27 August
94.3°
88.4°
+3.3°
28 August – 6 September
at normal
86.2°
—
August records over 66 years
113.9°4 August 1961All-time high
47.1°28 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Kennewick (5 mi).
Sun, 0990° / 63°0
90 °
Highland, Sunday, 9 August
Clear. High 90°, low 63°.
Pressure29.85 inHg
Wind8 mph SW
Humidity17%
Visibility6.2 mi
Dew point38°
Mon, 1095° / 59°0
95 °
Highland, Monday, 10 August
Clear. High 95°, low 59°.
Pressure29.88 inHg
Wind9.4 mph SW
Humidity23%
Visibility6.2 mi
Dew point43°
Tue, 1195° / 61°0
95 °
Highland, Tuesday, 11 August
Clear. High 95°, low 61°.
Pressure29.94 inHg
Wind9.9 mph SW
Humidity23%
Visibility6.2 mi
Dew point44°
Wed, 1293° / 63°0
93 °
Highland, Wednesday, 12 August
Clear. High 93°, low 63°.
Pressure29.83 inHg
Wind7.7 mph SW
Humidity27%
Visibility6.2 mi
Dew point47°
Thu, 1390° / 62°0
90 °
Highland, Thursday, 13 August
Clear. High 90°, low 62°.
Pressure29.80 inHg
Wind6.8 mph NE
Humidity24%
Visibility—
Dew point44°
Fri, 1495° / 64°0
95 °
Highland, Friday, 14 August
Mostly clear. High 95°, low 64°.
Pressure29.88 inHg
Wind10.7 mph N
Humidity16%
Visibility—
Dew point38°
Sat, 1597° / 69°0
97 °
Highland, Saturday, 15 August
Overcast. High 97°, low 69°.
Pressure29.91 inHg
Wind5.8 mph N
Humidity13%
Visibility—
Dew point35°
Sun, 16103° / 71°0
103 °
Highland, Sunday, 16 August
Clear. High 103°, low 71°.
Pressure29.85 inHg
Wind13.2 mph SW
Humidity11%
Visibility—
Dew point35°
Mon, 17100° / 71°0.01
100 °
Highland, Monday, 17 August
Light rain. High 100°, low 71°.
Pressure29.83 inHg
Wind8.9 mph SW
Humidity13%
Visibility—
Dew point37°
Tue, 1895° / 70°0
95 °
Highland, Tuesday, 18 August
Light rain. High 95°, low 70°.
Pressure29.85 inHg
Wind12.2 mph SW
Humidity16%
Visibility—
Dew point38°
Wed, 1995° / 66°0
95 °
Highland, Wednesday, 19 August
Overcast. High 95°, low 66°.
Pressure29.88 inHg
Wind15.1 mph SW
Humidity17%
Visibility—
Dew point38°
Thu, 2092° / 64°0
92 °
Highland, Thursday, 20 August
Clear. High 92°, low 64°.
Pressure29.83 inHg
Wind11.1 mph SW
Humidity18%
Visibility—
Dew point38°
Fri, 2192° / 61°0
92 °
Highland, Friday, 21 August
Clear. High 92°, low 61°.
Pressure29.94 inHg
Wind9.1 mph SW
Humidity33%
Visibility—
Dew point45°
Sat, 2297° / 65°0
97 °
Highland, Saturday, 22 August
Mostly clear. High 97°, low 65°.
Pressure29.85 inHg
Wind14 mph SW
Humidity24%
Visibility—
Dew point42°
Sun, 2395° / 63°0
95 °
Highland, Sunday, 23 August
Overcast. High 95°, low 63°.
Pressure29.85 inHg
Wind20.1 mph SW
Humidity26%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2487° / 62°0.01
87 °
Highland, Monday, 24 August
Climate normal for this date — 60-year average.
Average high87°
Average low62°
Average precipitation0.01 in
Chance of precipitation5%
Record high101° (2025)
Record low51° (1992)
Tue, 2587° / 62°0.02
87 °
Highland, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high87°
Average low62°
Average precipitation0.02 in
Chance of precipitation7%
Record high105° (1996)
Record low51° (1960)
Wed, 2688° / 62°0.01
88 °
Highland, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high88°
Average low62°
Average precipitation0.01 in
Chance of precipitation3%
Record high104° (1996)
Record low52° (1976)
Thu, 2788° / 63°0
88 °
Highland, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high88°
Average low63°
Average precipitation0 in
Chance of precipitation3%
Record high103° (1986)
Record low51° (1960)
Fri, 2888° / 62°0.01
88 °
Highland, Friday, 28 August
Climate normal for this date — 60-year average.
Average high88°
Average low62°
Average precipitation0.01 in
Chance of precipitation2%
Record high103° (2023)
Record low47° (1960)
Sat, 2989° / 63°0
89 °
Highland, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high89°
Average low63°
Average precipitation0 in
Chance of precipitation3%
Record high102° (1967)
Record low50° (1965)
Sun, 3086° / 62°0.02
86 °
Highland, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low62°
Average precipitation0.02 in
Chance of precipitation8%
Record high102° (1967)
Record low50° (1966)
Mon, 3185° / 61°0.01
85 °
Highland, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low61°
Average precipitation0.01 in
Chance of precipitation5%
Record high104° (2022)
Record low47° (1964)
Tue, 0186° / 60°0.01
86 °
Highland, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high86°
Average low60°
Average precipitation0.01 in
Chance of precipitation5%
Record high102° (1987)
Record low49° (2021)
Wed, 0285° / 60°0
85 °
Highland, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0 in
Chance of precipitation3%
Record high104° (2022)
Record low49° (1975)
Thu, 0386° / 61°0.01
86 °
Highland, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high86°
Average low61°
Average precipitation0.01 in
Chance of precipitation5%
Record high101° (2017)
Record low48° (2000)
Fri, 0486° / 60°0
86 °
Highland, Friday, 4 September
Climate normal for this date — 60-year average.
Average high86°
Average low60°
Average precipitation0 in
Chance of precipitation3%
Record high103° (2017)
Record low50° (1969)
Sat, 0586° / 60°0
86 °
Highland, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high86°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high100° (2017)
Record low51° (2000)
Sun, 0684° / 60°0.02
84 °
Highland, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low60°
Average precipitation0.02 in
Chance of precipitation10%
Record high100° (2024)
Record low49° (1996)
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 Highland, 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 Highland, 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.