Monthly outlook for Bonneville, OR: average high 91.3°, average low 62.7°. That is 5.5° 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 (109.4°), the coolest 10 August (55°).
91.3°/62.7°
Average high / low
+5.5°
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°
82.6°
+2.8°
19 August – 28 August
97.4°
79.8°
+9.8°
29 August – 7 September
at normal
77.8°
—
August records over 66 years
105.4°6 August 1972All-time high
45.5°29 August 1965All-time low
Climate normals and records are computed from the nearest reference point — Carson (9 mi).
Mon, 1084° / 55°0
84 °
Bonneville, Monday, 10 August
Clear. High 84°, low 55°.
Pressure30.03 inHg
Wind7.4 mph SW
Humidity38%
Visibility6.2 mi
Dew point46°
Tue, 1184° / 56°0
84 °
Bonneville, Tuesday, 11 August
Clear. High 84°, low 56°.
Pressure30.06 inHg
Wind7.1 mph SW
Humidity44%
Visibility6.2 mi
Dew point50°
Wed, 1282° / 59°0
82 °
Bonneville, Wednesday, 12 August
Partly cloudy. High 82°, low 59°.
Pressure30.00 inHg
Wind6.3 mph W
Humidity66%
Visibility6.2 mi
Dew point53°
Thu, 1391° / 58°0
91 °
Bonneville, Thursday, 13 August
Clear. High 91°, low 58°.
Pressure29.80 inHg
Wind8.3 mph W
Humidity29%
Visibility—
Dew point51°
Fri, 1491° / 63°0
91 °
Bonneville, Friday, 14 August
Overcast. High 91°, low 63°.
Pressure29.85 inHg
Wind7.9 mph W
Humidity32%
Visibility—
Dew point55°
Sat, 1590° / 62°0
90 °
Bonneville, Saturday, 15 August
Overcast. High 90°, low 62°.
Pressure29.94 inHg
Wind7.6 mph SW
Humidity33%
Visibility—
Dew point55°
Sun, 1692° / 65°0
92 °
Bonneville, Sunday, 16 August
Mostly clear. High 92°, low 65°.
Pressure30.00 inHg
Wind8.9 mph W
Humidity28%
Visibility—
Dew point52°
Mon, 1786° / 62°0
86 °
Bonneville, Monday, 17 August
Clear. High 86°, low 62°.
Pressure30.12 inHg
Wind9.3 mph W
Humidity26%
Visibility—
Dew point45°
Tue, 1891° / 62°0
91 °
Bonneville, Tuesday, 18 August
Clear. High 91°, low 62°.
Pressure30.06 inHg
Wind7.4 mph W
Humidity18%
Visibility—
Dew point39°
Wed, 1996° / 67°0
96 °
Bonneville, Wednesday, 19 August
Clear. High 96°, low 67°.
Pressure30.03 inHg
Wind7.7 mph W
Humidity20%
Visibility—
Dew point46°
Thu, 2093° / 67°0
93 °
Bonneville, Thursday, 20 August
Partly cloudy. High 93°, low 67°.
Pressure30.00 inHg
Wind9.1 mph W
Humidity27%
Visibility—
Dew point51°
Fri, 2192° / 63°0
92 °
Bonneville, Friday, 21 August
Clear. High 92°, low 63°.
Pressure29.94 inHg
Wind7.2 mph SW
Humidity26%
Visibility—
Dew point50°
Sat, 2295° / 66°0
95 °
Bonneville, Saturday, 22 August
Clear. High 95°, low 66°.
Pressure29.97 inHg
Wind7.7 mph SW
Humidity29%
Visibility—
Dew point54°
Sun, 23100° / 68°0
100 °
Bonneville, Sunday, 23 August
Clear. High 100°, low 68°.
Pressure30.00 inHg
Wind6.5 mph W
Humidity24%
Visibility—
Dew point53°
Mon, 24109° / 74°0
109 °
Bonneville, Monday, 24 August
Mostly clear. High 109°, low 74°.
Pressure29.85 inHg
Wind6.9 mph W
Humidity15%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2580° / 57°0.05
80 °
Bonneville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low57°
Average precipitation0.05 in
Chance of precipitation12%
Record high101° (1996)
Record low47° (1975)
Wed, 2681° / 58°0.02
81 °
Bonneville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low58°
Average precipitation0.02 in
Chance of precipitation12%
Record high96° (1986)
Record low50° (1978)
Thu, 2780° / 58°0.02
80 °
Bonneville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0.02 in
Chance of precipitation13%
Record high98° (1986)
Record low48° (2000)
Fri, 2881° / 57°0.02
81 °
Bonneville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low57°
Average precipitation0.02 in
Chance of precipitation10%
Record high102° (2017)
Record low46° (2024)
Sat, 2980° / 58°0.05
80 °
Bonneville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0.05 in
Chance of precipitation18%
Record high97° (1967)
Record low46° (1965)
Sun, 3077° / 57°0.07
77 °
Bonneville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low57°
Average precipitation0.07 in
Chance of precipitation27%
Record high96° (1967)
Record low47° (1965)
Mon, 3177° / 57°0.03
77 °
Bonneville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high77°
Average low57°
Average precipitation0.03 in
Chance of precipitation13%
Record high99° (1987)
Record low48° (1964)
Tue, 0178° / 56°0.05
78 °
Bonneville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low56°
Average precipitation0.05 in
Chance of precipitation15%
Record high97° (2017)
Record low47° (1980)
Wed, 0278° / 55°0.05
78 °
Bonneville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.05 in
Chance of precipitation15%
Record high102° (2017)
Record low47° (1975)
Thu, 0379° / 56°0.04
79 °
Bonneville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.04 in
Chance of precipitation15%
Record high102° (1988)
Record low48° (1964)
Fri, 0478° / 57°0.02
78 °
Bonneville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high78°
Average low57°
Average precipitation0.02 in
Chance of precipitation15%
Record high101° (1988)
Record low46° (2000)
Sat, 0578° / 56°0.03
78 °
Bonneville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low56°
Average precipitation0.03 in
Chance of precipitation13%
Record high97° (2017)
Record low45° (1969)
Sun, 0677° / 56°0.07
77 °
Bonneville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.07 in
Chance of precipitation18%
Record high96° (2024)
Record low46° (1960)
Mon, 0777° / 56°0.04
77 °
Bonneville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.04 in
Chance of precipitation13%
Record high95° (2011)
Record low48° (1976)
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 Bonneville, OR 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 Bonneville, OR 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.