Monthly outlook for Benton City, WA: average high 88.9°, average low 64.3°. That is 0.7° below the climate normal for August. Precipitation is expected on 2 days (about 0.1 inches), against a normal of 1 days and 0.1 inches. The warmest day looks like 15 August (99°), the coolest 18 August (57.6°).
88.9°/64.3°
Average high / low
−0.7°
Below normal
2 / 1
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
91.4°
91.5°
-0°
19 August – 28 August
84.7°
87.5°
-1.6°
29 August – 7 September
at normal
85.2°
—
August records over 66 years
111.2°4 August 1961All-time high
48.6°22 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Prosser (14 mi).
Mon, 1095° / 61°0
95 °
Benton City, Monday, 10 August
Clear. High 95°, low 61°.
Pressure29.88 inHg
Wind6.1 mph SW
Humidity22%
Visibility6.2 mi
Dew point43°
Tue, 1195° / 64°0
95 °
Benton City, Tuesday, 11 August
Clear. High 95°, low 64°.
Pressure29.94 inHg
Wind1.5 mph SW
Humidity21%
Visibility6.2 mi
Dew point42°
Wed, 1295° / 66°0
95 °
Benton City, Wednesday, 12 August
Clear. High 95°, low 66°.
Pressure29.83 inHg
Wind3.4 mph W
Humidity23%
Visibility6.2 mi
Dew point44°
Thu, 1394° / 66°0
94 °
Benton City, Thursday, 13 August
Clear. High 94°, low 66°.
Pressure29.74 inHg
Wind8.7 mph N
Humidity21%
Visibility—
Dew point43°
Fri, 1496° / 69°0
96 °
Benton City, Friday, 14 August
Clear. High 96°, low 69°.
Pressure29.80 inHg
Wind7 mph N
Humidity17%
Visibility—
Dew point40°
Sat, 1599° / 68°0
99 °
Benton City, Saturday, 15 August
Partly cloudy. High 99°, low 68°.
Pressure29.83 inHg
Wind10.2 mph SW
Humidity13%
Visibility—
Dew point35°
Sun, 1693° / 69°0
93 °
Benton City, Sunday, 16 August
Overcast. High 93°, low 69°.
Pressure29.83 inHg
Wind22.1 mph W
Humidity14%
Visibility—
Dew point35°
Mon, 1771° / 62°0.07
71 °
Benton City, Monday, 17 August
Light rain. High 71°, low 62°.
Pressure30.00 inHg
Wind17.1 mph W
Humidity61%
Visibility—
Dew point56°
Tue, 1885° / 58°0
85 °
Benton City, Tuesday, 18 August
Partly cloudy. High 85°, low 58°.
Pressure29.88 inHg
Wind11.2 mph SW
Humidity29%
Visibility—
Dew point46°
Wed, 1989° / 63°0
89 °
Benton City, Wednesday, 19 August
Partly cloudy. High 89°, low 63°.
Pressure29.88 inHg
Wind9.4 mph SW
Humidity26%
Visibility—
Dew point46°
Thu, 2091° / 70°0.02
91 °
Benton City, Thursday, 20 August
Light rain. High 91°, low 70°.
Pressure29.80 inHg
Wind10.5 mph NW
Humidity27%
Visibility—
Dew point49°
Fri, 2188° / 67°0.04
88 °
Benton City, Friday, 21 August
Light rain. High 88°, low 67°.
Pressure29.80 inHg
Wind16 mph SW
Humidity19%
Visibility—
Dew point38°
Sat, 2281° / 63°0.01
81 °
Benton City, Saturday, 22 August
Light rain. High 81°, low 63°.
Pressure29.88 inHg
Wind12.4 mph SW
Humidity31%
Visibility—
Dew point45°
Sun, 2385° / 59°0
85 °
Benton City, Sunday, 23 August
Overcast. High 85°, low 59°.
Pressure29.94 inHg
Wind8.1 mph S
Humidity28%
Visibility—
Dew point43°
Mon, 2475° / 62°0
75 °
Benton City, Monday, 24 August
Overcast. High 75°, low 62°.
Pressure29.80 inHg
Wind8.7 mph NW
Humidity42%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2586° / 62°0.02
86 °
Benton City, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low62°
Average precipitation0.02 in
Chance of precipitation10%
Record high103° (1996)
Record low51° (1960)
Wed, 2687° / 61°0
87 °
Benton City, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high87°
Average low61°
Average precipitation0 in
Chance of precipitation2%
Record high103° (1996)
Record low51° (1993)
Thu, 2787° / 62°0
87 °
Benton City, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high87°
Average low62°
Average precipitation0 in
Chance of precipitation7%
Record high101° (1986)
Record low51° (1960)
Fri, 2887° / 62°0
87 °
Benton City, Friday, 28 August
Climate normal for this date — 60-year average.
Average high87°
Average low62°
Average precipitation0 in
Chance of precipitation3%
Record high101° (2023)
Record low51° (1960)
Sat, 2988° / 63°0.01
88 °
Benton City, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high88°
Average low63°
Average precipitation0.01 in
Chance of precipitation3%
Record high100° (2017)
Record low50° (1965)
Sun, 3086° / 62°0.02
86 °
Benton City, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high86°
Average low62°
Average precipitation0.02 in
Chance of precipitation8%
Record high101° (2007)
Record low50° (1966)
Mon, 3185° / 61°0.01
85 °
Benton City, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low61°
Average precipitation0.01 in
Chance of precipitation3%
Record high102° (2022)
Record low49° (1964)
Tue, 0185° / 60°0.01
85 °
Benton City, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0.01 in
Chance of precipitation8%
Record high103° (1987)
Record low49° (1975)
Wed, 0285° / 60°0
85 °
Benton City, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0 in
Chance of precipitation7%
Record high101° (2022)
Record low49° (1975)
Thu, 0385° / 60°0.01
85 °
Benton City, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0.01 in
Chance of precipitation3%
Record high104° (2025)
Record low49° (1964)
Fri, 0486° / 60°0
86 °
Benton City, Friday, 4 September
Climate normal for this date — 60-year average.
Average high86°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high103° (2025)
Record low51° (1969)
Sat, 0585° / 60°0
85 °
Benton City, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high85°
Average low60°
Average precipitation0 in
Chance of precipitation3%
Record high102° (1988)
Record low50° (1969)
Sun, 0684° / 59°0.02
84 °
Benton City, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low59°
Average precipitation0.02 in
Chance of precipitation12%
Record high100° (2024)
Record low47° (1960)
Mon, 0784° / 59°0
84 °
Benton City, Monday, 7 September
Climate normal for this date — 60-year average.
Average high84°
Average low59°
Average precipitation0 in
Chance of precipitation3%
Record high100° (2024)
Record low48° (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 Benton City, 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 Benton City, 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.