Monthly outlook for Harbor Hills, OH: average high 78.6°, average low 60°. That is 1.4° below the climate normal for August. Precipitation is expected on 6 days (about 3.8 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 10 August (87.3°), the coolest 21 August (52.6°).
78.6°/60°
Average high / low
−1.4°
Below normal
6 / 6
Wet days / normal
3.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
79.9°
81.3°
-0.8°
19 August – 28 August
76.5°
81.1°
-2.6°
29 August – 7 September
at normal
79.4°
—
August records over 66 years
97°17 August 1988All-time high
46.8°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Newark (9 mi).
Mon, 1087° / 68°0.37
87 °
Harbor Hills, Monday, 10 August
Heavy rain. High 87°, low 68°.
Pressure30.00 inHg
Wind9.4 mph W
Humidity81%
Visibility6.2 mi
Dew point67°
Tue, 1181° / 64°1.11
81 °
Harbor Hills, Tuesday, 11 August
Heavy rain. High 81°, low 64°.
Pressure30.03 inHg
Wind11.2 mph W
Humidity83%
Visibility6.2 mi
Dew point70°
Wed, 1281° / 65°1.79
81 °
Harbor Hills, Wednesday, 12 August
Heavy rain. High 81°, low 65°.
Pressure29.80 inHg
Wind11.2 mph SW
Humidity88%
Visibility6.2 mi
Dew point72°
Thu, 1380° / 64°0
80 °
Harbor Hills, Thursday, 13 August
Overcast. High 80°, low 64°.
Pressure29.97 inHg
Wind7 mph NW
Humidity54%
Visibility—
Dew point60°
Fri, 1477° / 59°0.05
77 °
Harbor Hills, Friday, 14 August
Light rain. High 77°, low 59°.
Pressure30.09 inHg
Wind9.4 mph N
Humidity75%
Visibility—
Dew point58°
Sat, 1573° / 53°0
73 °
Harbor Hills, Saturday, 15 August
Overcast. High 73°, low 53°.
Pressure30.27 inHg
Wind7.1 mph NE
Humidity53%
Visibility—
Dew point52°
Sun, 1678° / 56°0.03
78 °
Harbor Hills, Sunday, 16 August
Light rain. High 78°, low 56°.
Pressure30.03 inHg
Wind8.3 mph E
Humidity82%
Visibility—
Dew point62°
Mon, 1775° / 62°0.02
75 °
Harbor Hills, Monday, 17 August
Light rain. High 75°, low 62°.
Pressure30.00 inHg
Wind11.4 mph NW
Humidity67%
Visibility—
Dew point62°
Tue, 1880° / 57°0
80 °
Harbor Hills, Tuesday, 18 August
Overcast. High 80°, low 57°.
Pressure29.97 inHg
Wind6.2 mph W
Humidity58%
Visibility—
Dew point59°
Wed, 1981° / 63°0.05
81 °
Harbor Hills, Wednesday, 19 August
Light rain. High 81°, low 63°.
Pressure29.74 inHg
Wind10.7 mph NW
Humidity70%
Visibility—
Dew point68°
Thu, 2073° / 56°0
73 °
Harbor Hills, Thursday, 20 August
Overcast. High 73°, low 56°.
Pressure29.91 inHg
Wind9.1 mph N
Humidity69%
Visibility—
Dew point58°
Fri, 2175° / 53°0
75 °
Harbor Hills, Friday, 21 August
Clear. High 75°, low 53°.
Pressure29.94 inHg
Wind6 mph S
Humidity53%
Visibility—
Dew point53°
Sat, 2280° / 61°0.35
80 °
Harbor Hills, Saturday, 22 August
Rain. High 80°, low 61°.
Pressure29.83 inHg
Wind12 mph SW
Humidity60%
Visibility—
Dew point63°
Sun, 2373° / 59°0
73 °
Harbor Hills, Sunday, 23 August
Mostly clear. High 73°, low 59°.
Pressure30.06 inHg
Wind11.3 mph NW
Humidity64%
Visibility—
Dew point57°
Mon, 2476° / 54°0
76 °
Harbor Hills, Monday, 24 August
Clear. High 76°, low 54°.
Pressure30.21 inHg
Wind5.6 mph E
Humidity47%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 64°0.08
81 °
Harbor Hills, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.08 in
Chance of precipitation28%
Record high92° (2006)
Record low53° (1977)
Wed, 2682° / 64°0.1
82 °
Harbor Hills, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.1 in
Chance of precipitation30%
Record high91° (2006)
Record low52° (2017)
Thu, 2782° / 65°0.08
82 °
Harbor Hills, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.08 in
Chance of precipitation40%
Record high92° (2024)
Record low51° (2025)
Fri, 2881° / 65°0.12
81 °
Harbor Hills, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.12 in
Chance of precipitation35%
Record high91° (2024)
Record low52° (1968)
Sat, 2981° / 64°0.16
81 °
Harbor Hills, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.16 in
Chance of precipitation30%
Record high91° (2007)
Record low47° (1986)
Sun, 3080° / 64°0.15
80 °
Harbor Hills, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.15 in
Chance of precipitation32%
Record high94° (2024)
Record low49° (1986)
Mon, 3180° / 63°0.1
80 °
Harbor Hills, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.1 in
Chance of precipitation35%
Record high94° (2012)
Record low51° (2025)
Tue, 0179° / 63°0.09
79 °
Harbor Hills, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.09 in
Chance of precipitation28%
Record high91° (2010)
Record low50° (1967)
Wed, 0280° / 63°0.09
80 °
Harbor Hills, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.09 in
Chance of precipitation30%
Record high94° (2011)
Record low51° (1967)
Thu, 0380° / 63°0.11
80 °
Harbor Hills, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.11 in
Chance of precipitation25%
Record high95° (2011)
Record low51° (1967)
Fri, 0479° / 62°0.07
79 °
Harbor Hills, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.07 in
Chance of precipitation25%
Record high91° (2008)
Record low50° (1997)
Sat, 0578° / 62°0.09
78 °
Harbor Hills, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low62°
Average precipitation0.09 in
Chance of precipitation25%
Record high91° (2007)
Record low50° (1997)
Sun, 0679° / 61°0.06
79 °
Harbor Hills, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.06 in
Chance of precipitation22%
Record high93° (2007)
Record low48° (1988)
Mon, 0778° / 61°0.05
78 °
Harbor Hills, Monday, 7 September
Climate normal for this date — 60-year average.
Average high78°
Average low61°
Average precipitation0.05 in
Chance of precipitation20%
Record high92° (2002)
Record low47° (2025)
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 Harbor Hills, 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 Harbor Hills, 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.