Monthly outlook for Saint Joseph, OR: average high 89.6°, average low 55.5°. That is 4.4° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 16 August (96.7°), the coolest 13 August (51.2°).
89.6°/55.5°
Average high / low
+4.4°
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
90.5°
82.8°
+4.3°
18 August – 27 August
88.1°
79.9°
+4.5°
28 August – 6 September
at normal
78.5°
—
August records over 66 years
106.9°14 August 2023All-time high
45.5°18 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Gervais (15 mi).
Sun, 0985° / 53°0
85 °
Saint Joseph, Sunday, 9 August
Partly cloudy. High 85°, low 53°.
Pressure30.03 inHg
Wind4.7 mph NE
Humidity29%
Visibility6.2 mi
Dew point43°
Mon, 1087° / 51°0
87 °
Saint Joseph, Monday, 10 August
Clear. High 87°, low 51°.
Pressure30.06 inHg
Wind5.7 mph NE
Humidity35%
Visibility6.2 mi
Dew point47°
Tue, 1190° / 54°0
90 °
Saint Joseph, Tuesday, 11 August
Clear. High 90°, low 54°.
Pressure30.06 inHg
Wind4.6 mph NE
Humidity38%
Visibility6.2 mi
Dew point52°
Wed, 1285° / 56°0
85 °
Saint Joseph, Wednesday, 12 August
Clear. High 85°, low 56°.
Pressure30.03 inHg
Wind3.1 mph NE
Humidity36%
Visibility6.2 mi
Dew point50°
Thu, 1390° / 51°0
90 °
Saint Joseph, Thursday, 13 August
Clear. High 90°, low 51°.
Pressure29.88 inHg
Wind9.9 mph N
Humidity30%
Visibility—
Dew point47°
Fri, 1495° / 57°0
95 °
Saint Joseph, Friday, 14 August
Clear. High 95°, low 57°.
Pressure29.91 inHg
Wind7.6 mph W
Humidity24%
Visibility—
Dew point45°
Sat, 1596° / 59°0
96 °
Saint Joseph, Saturday, 15 August
Overcast. High 96°, low 59°.
Pressure29.97 inHg
Wind6.4 mph NW
Humidity27%
Visibility—
Dew point49°
Sun, 1697° / 60°0
97 °
Saint Joseph, Sunday, 16 August
Clear. High 97°, low 60°.
Pressure29.97 inHg
Wind5.6 mph NW
Humidity24%
Visibility—
Dew point49°
Mon, 1791° / 59°0
91 °
Saint Joseph, Monday, 17 August
Overcast. High 91°, low 59°.
Pressure29.94 inHg
Wind6.4 mph W
Humidity23%
Visibility—
Dew point44°
Tue, 1889° / 56°0
89 °
Saint Joseph, Tuesday, 18 August
Overcast. High 89°, low 56°.
Pressure30.00 inHg
Wind7.2 mph W
Humidity31%
Visibility—
Dew point48°
Wed, 1986° / 55°0
86 °
Saint Joseph, Wednesday, 19 August
Overcast. High 86°, low 55°.
Pressure30.03 inHg
Wind5.9 mph NW
Humidity33%
Visibility—
Dew point49°
Thu, 2087° / 55°0
87 °
Saint Joseph, Thursday, 20 August
Clear. High 87°, low 55°.
Pressure30.00 inHg
Wind7 mph N
Humidity28%
Visibility—
Dew point46°
Fri, 2189° / 53°0
89 °
Saint Joseph, Friday, 21 August
Mostly clear. High 89°, low 53°.
Pressure29.94 inHg
Wind9.7 mph NE
Humidity26%
Visibility—
Dew point42°
Sat, 2291° / 55°0
91 °
Saint Joseph, Saturday, 22 August
Mostly clear. High 91°, low 55°.
Pressure29.91 inHg
Wind7.9 mph N
Humidity24%
Visibility—
Dew point44°
Sun, 2386° / 55°0
86 °
Saint Joseph, Sunday, 23 August
Mostly clear. High 86°, low 55°.
Pressure30.00 inHg
Wind7.4 mph NE
Humidity20%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2479° / 55°0.06
79 °
Saint Joseph, Monday, 24 August
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.06 in
Chance of precipitation12%
Record high98° (1996)
Record low48° (1963)
Tue, 2580° / 55°0.04
80 °
Saint Joseph, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.04 in
Chance of precipitation12%
Record high95° (2022)
Record low48° (1975)
Wed, 2681° / 56°0.02
81 °
Saint Joseph, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.02 in
Chance of precipitation8%
Record high97° (2025)
Record low47° (1993)
Thu, 2780° / 56°0.02
80 °
Saint Joseph, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.02 in
Chance of precipitation12%
Record high101° (2019)
Record low48° (1960)
Fri, 2880° / 55°0.02
80 °
Saint Joseph, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.02 in
Chance of precipitation13%
Record high98° (2017)
Record low47° (1960)
Sat, 2979° / 56°0.05
79 °
Saint Joseph, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.05 in
Chance of precipitation20%
Record high95° (2022)
Record low46° (1965)
Sun, 3077° / 56°0.04
77 °
Saint Joseph, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low56°
Average precipitation0.04 in
Chance of precipitation15%
Record high97° (2022)
Record low47° (1966)
Mon, 3178° / 55°0.02
78 °
Saint Joseph, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.02 in
Chance of precipitation8%
Record high98° (1987)
Record low47° (1964)
Tue, 0179° / 55°0.03
79 °
Saint Joseph, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.03 in
Chance of precipitation12%
Record high98° (1988)
Record low44° (1973)
Wed, 0279° / 55°0.03
79 °
Saint Joseph, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.03 in
Chance of precipitation12%
Record high102° (1988)
Record low45° (1960)
Thu, 0378° / 55°0.02
78 °
Saint Joseph, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.02 in
Chance of precipitation15%
Record high97° (2020)
Record low45° (1975)
Fri, 0479° / 55°0.02
79 °
Saint Joseph, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.02 in
Chance of precipitation13%
Record high101° (2017)
Record low46° (2000)
Sat, 0578° / 55°0.02
78 °
Saint Joseph, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low55°
Average precipitation0.02 in
Chance of precipitation13%
Record high101° (2024)
Record low44° (1969)
Sun, 0678° / 54°0.04
78 °
Saint Joseph, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low54°
Average precipitation0.04 in
Chance of precipitation17%
Record high95° (2024)
Record low46° (1969)
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 Saint Joseph, 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 Saint Joseph, 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.