Monthly outlook for Granville South, OH: average high 81.3°, average low 65.2°. That is 0.1° above the climate normal for August. Precipitation is expected on 9 days (about 4.5 inches), against a normal of 6 days and 1.8 inches. The warmest day looks like 18 August (87.8°), the coolest 23 August (60.7°).
81.3°/65.2°
Average high / low
+0.1°
Above normal
9 / 6
Wet days / normal
4.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
81.8°
81.3°
+0.3°
19 August – 28 August
80.3°
81.1°
-0.5°
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 (6 mi).
Mon, 1087° / 68°1.08
87 °
Granville South, Monday, 10 August
Heavy rain. High 87°, low 68°.
Pressure30.00 inHg
Wind15.7 mph SW
Humidity82%
Visibility6.2 mi
Dew point70°
Tue, 1179° / 65°0.87
79 °
Granville South, Tuesday, 11 August
Heavy rain. High 79°, low 65°.
Pressure30.00 inHg
Wind12.2 mph W
Humidity82%
Visibility6.2 mi
Dew point70°
Wed, 1280° / 64°0.79
80 °
Granville South, Wednesday, 12 August
Heavy rain. High 80°, low 64°.
Pressure29.83 inHg
Wind4.8 mph NW
Humidity89%
Visibility6.2 mi
Dew point71°
Thu, 1382° / 64°0
82 °
Granville South, Thursday, 13 August
Partly cloudy. High 82°, low 64°.
Pressure30.00 inHg
Wind5.1 mph NE
Humidity66%
Visibility6.2 mi
Dew point65°
Fri, 1476° / 64°0.07
76 °
Granville South, Friday, 14 August
Light rain. High 76°, low 64°.
Pressure30.06 inHg
Wind3.9 mph E
Humidity77%
Visibility—
Dew point67°
Sat, 1576° / 67°0.66
76 °
Granville South, Saturday, 15 August
Rain. High 76°, low 67°.
Pressure30.09 inHg
Wind13.7 mph S
Humidity96%
Visibility—
Dew point71°
Sun, 1686° / 68°0
86 °
Granville South, Sunday, 16 August
Clear. High 86°, low 68°.
Pressure29.85 inHg
Wind17.7 mph W
Humidity70%
Visibility—
Dew point73°
Mon, 1778° / 61°0
78 °
Granville South, Monday, 17 August
Partly cloudy. High 78°, low 61°.
Pressure30.06 inHg
Wind6.7 mph N
Humidity64%
Visibility—
Dew point62°
Tue, 1888° / 65°0
88 °
Granville South, Tuesday, 18 August
Overcast. High 88°, low 65°.
Pressure29.88 inHg
Wind13.3 mph W
Humidity81%
Visibility—
Dew point74°
Wed, 1982° / 69°0.04
82 °
Granville South, Wednesday, 19 August
Light rain. High 82°, low 69°.
Pressure30.03 inHg
Wind11.5 mph NW
Humidity65%
Visibility—
Dew point68°
Thu, 2074° / 66°0.53
74 °
Granville South, Thursday, 20 August
Rain. High 74°, low 66°.
Pressure29.94 inHg
Wind8.6 mph SW
Humidity97%
Visibility—
Dew point69°
Fri, 2183° / 67°0.45
83 °
Granville South, Friday, 21 August
Rain. High 83°, low 67°.
Pressure29.83 inHg
Wind7 mph W
Humidity74%
Visibility—
Dew point72°
Sat, 2280° / 64°0.05
80 °
Granville South, Saturday, 22 August
Light rain. High 80°, low 64°.
Pressure29.91 inHg
Wind8.7 mph N
Humidity65%
Visibility—
Dew point65°
Sun, 2380° / 61°0
80 °
Granville South, Sunday, 23 August
Clear. High 80°, low 61°.
Pressure30.00 inHg
Wind6.4 mph NE
Humidity65%
Visibility—
Dew point64°
Mon, 2483° / 62°0
83 °
Granville South, Monday, 24 August
Clear. High 83°, low 62°.
Pressure30.03 inHg
Wind5.9 mph W
Humidity58%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 64°0.08
81 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 °
Granville South, 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 Granville South, 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 Granville South, 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.