Monthly outlook for Oregonia, OH: average high 79.9°, average low 63.4°. That is 1.3° below the climate normal for August. Precipitation is expected on 5 days (about 3.0 inches), against a normal of 5 days and 1.6 inches. The warmest day looks like 10 August (91°), the coolest 21 August (53.9°).
79.9°/63.4°
Average high / low
−1.3°
Below normal
5 / 5
Wet days / normal
3.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.6°
82.4°
-1°
19 August – 28 August
78.8°
82.3°
-1.9°
29 August – 7 September
at normal
80.6°
—
August records over 66 years
98.2°17 August 1988All-time high
46.9°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Lebanon (7 mi).
Mon, 1091° / 72°0.09
91 °
Oregonia, Monday, 10 August
Rain. High 91°, low 72°.
Pressure30.03 inHg
Wind11.2 mph W
Humidity63%
Visibility6.2 mi
Dew point71°
Tue, 1184° / 66°2.22
84 °
Oregonia, Tuesday, 11 August
Heavy rain. High 84°, low 66°.
Pressure29.97 inHg
Wind16.8 mph S
Humidity92%
Visibility6.2 mi
Dew point68°
Wed, 1285° / 71°0.43
85 °
Oregonia, Wednesday, 12 August
Rain. High 85°, low 71°.
Pressure29.80 inHg
Wind8.1 mph W
Humidity75%
Visibility6.2 mi
Dew point74°
Thu, 1378° / 63°0.01
78 °
Oregonia, Thursday, 13 August
Light rain. High 78°, low 63°.
Pressure30.00 inHg
Wind9.4 mph NE
Humidity60%
Visibility—
Dew point61°
Fri, 1474° / 62°0.01
74 °
Oregonia, Friday, 14 August
Light rain. High 74°, low 62°.
Pressure30.12 inHg
Wind6.3 mph NE
Humidity76%
Visibility—
Dew point60°
Sat, 1577° / 57°0
77 °
Oregonia, Saturday, 15 August
Overcast. High 77°, low 57°.
Pressure30.27 inHg
Wind6.1 mph NE
Humidity54%
Visibility—
Dew point57°
Sun, 1674° / 63°0
74 °
Oregonia, Sunday, 16 August
Overcast. High 74°, low 63°.
Pressure30.15 inHg
Wind7 mph E
Humidity78%
Visibility—
Dew point61°
Mon, 1775° / 63°0.11
75 °
Oregonia, Monday, 17 August
Light rain. High 75°, low 63°.
Pressure30.03 inHg
Wind6.9 mph N
Humidity79%
Visibility—
Dew point66°
Tue, 1881° / 62°0
81 °
Oregonia, Tuesday, 18 August
Partly cloudy. High 81°, low 62°.
Pressure30.03 inHg
Wind4.9 mph E
Humidity66%
Visibility—
Dew point65°
Wed, 1983° / 65°0.05
83 °
Oregonia, Wednesday, 19 August
Light rain. High 83°, low 65°.
Pressure29.88 inHg
Wind10.3 mph NW
Humidity62%
Visibility—
Dew point67°
Thu, 2067° / 55°0.01
67 °
Oregonia, Thursday, 20 August
Light rain. High 67°, low 55°.
Pressure30.00 inHg
Wind12.6 mph NW
Humidity70%
Visibility—
Dew point54°
Fri, 2173° / 54°0
73 °
Oregonia, Friday, 21 August
Partly cloudy. High 73°, low 54°.
Pressure30.03 inHg
Wind7.2 mph E
Humidity56%
Visibility—
Dew point54°
Sat, 2279° / 54°0.02
79 °
Oregonia, Saturday, 22 August
Light rain. High 79°, low 54°.
Pressure29.94 inHg
Wind9.6 mph S
Humidity55%
Visibility—
Dew point57°
Sun, 2387° / 69°0.04
87 °
Oregonia, Sunday, 23 August
Light rain. High 87°, low 69°.
Pressure29.94 inHg
Wind9.2 mph NW
Humidity55%
Visibility—
Dew point66°
Mon, 2483° / 67°0
83 °
Oregonia, Monday, 24 August
Overcast. High 83°, low 67°.
Pressure30.03 inHg
Wind5.3 mph NW
Humidity56%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 65°0.07
82 °
Oregonia, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation30%
Record high92° (1998)
Record low55° (1984)
Wed, 2683° / 65°0.07
83 °
Oregonia, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low65°
Average precipitation0.07 in
Chance of precipitation28%
Record high92° (1983)
Record low52° (2025)
Thu, 2783° / 66°0.07
83 °
Oregonia, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.07 in
Chance of precipitation32%
Record high93° (2024)
Record low51° (2025)
Fri, 2883° / 66°0.14
83 °
Oregonia, Friday, 28 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.14 in
Chance of precipitation37%
Record high92° (1990)
Record low53° (2025)
Sat, 2982° / 65°0.11
82 °
Oregonia, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.11 in
Chance of precipitation40%
Record high93° (2007)
Record low47° (1986)
Sun, 3081° / 65°0.12
81 °
Oregonia, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.12 in
Chance of precipitation32%
Record high95° (2024)
Record low51° (1986)
Mon, 3181° / 64°0.08
81 °
Oregonia, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation33%
Record high91° (1995)
Record low52° (2009)
Tue, 0181° / 64°0.07
81 °
Oregonia, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.07 in
Chance of precipitation28%
Record high93° (2011)
Record low51° (1967)
Wed, 0281° / 64°0.09
81 °
Oregonia, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.09 in
Chance of precipitation28%
Record high94° (2011)
Record low50° (1965)
Thu, 0380° / 64°0.14
80 °
Oregonia, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.14 in
Chance of precipitation28%
Record high94° (2011)
Record low52° (1967)
Fri, 0480° / 64°0.06
80 °
Oregonia, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.06 in
Chance of precipitation22%
Record high90° (1973)
Record low50° (1997)
Sat, 0580° / 63°0.07
80 °
Oregonia, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.07 in
Chance of precipitation23%
Record high93° (2007)
Record low49° (1997)
Sun, 0680° / 62°0.04
80 °
Oregonia, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.04 in
Chance of precipitation15%
Record high94° (1998)
Record low47° (1988)
Mon, 0779° / 63°0.04
79 °
Oregonia, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.04 in
Chance of precipitation17%
Record high92° (2002)
Record low47° (1962)
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 Oregonia, OH 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 Oregonia, OH 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.