Monthly outlook for South Orange, NJ: average high 87.3°, average low 69.6°. That is 3.2° above the climate normal for August. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 6 days and 2.2 inches. The warmest day looks like 23 August (96.9°), the coolest 15 August (60.7°).
87.3°/69.6°
Average high / low
+3.2°
Above normal
3 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.4°
82.4°
+1.1°
19 August – 28 August
92.2°
80.8°
+6.3°
29 August – 7 September
at normal
79.4°
—
August records over 66 years
100.2°2 August 2006All-time high
49.1°30 August 1986All-time low
Mon, 1087° / 71°0
87 °
South Orange, Monday, 10 August
Light rain. High 87°, low 71°.
Pressure29.97 inHg
Wind5.7 mph S
Humidity35%
Visibility6.2 mi
Dew point59°
Tue, 1191° / 71°0.15
91 °
South Orange, Tuesday, 11 August
Rain. High 91°, low 71°.
Pressure29.83 inHg
Wind10.4 mph NW
Humidity40%
Visibility6.2 mi
Dew point59°
Wed, 1285° / 74°0
85 °
South Orange, Wednesday, 12 August
Light rain. High 85°, low 74°.
Pressure29.74 inHg
Wind3.3 mph SE
Humidity42%
Visibility6.2 mi
Dew point60°
Thu, 1384° / 69°0.05
84 °
South Orange, Thursday, 13 August
Light rain. High 84°, low 69°.
Pressure29.74 inHg
Wind14.6 mph NW
Humidity37%
Visibility—
Dew point52°
Fri, 1478° / 62°0
78 °
South Orange, Friday, 14 August
Clear. High 78°, low 62°.
Pressure29.97 inHg
Wind16.1 mph NW
Humidity27%
Visibility—
Dew point40°
Sat, 1579° / 61°0
79 °
South Orange, Saturday, 15 August
Clear. High 79°, low 61°.
Pressure30.06 inHg
Wind13.7 mph NW
Humidity28%
Visibility—
Dew point40°
Sun, 1682° / 62°0
82 °
South Orange, Sunday, 16 August
Overcast. High 82°, low 62°.
Pressure30.09 inHg
Wind6.8 mph N
Humidity24%
Visibility—
Dew point39°
Mon, 1782° / 66°0.01
82 °
South Orange, Monday, 17 August
Light rain. High 82°, low 66°.
Pressure30.00 inHg
Wind6.7 mph W
Humidity28%
Visibility—
Dew point44°
Tue, 1887° / 66°0
87 °
South Orange, Tuesday, 18 August
Partly cloudy. High 87°, low 66°.
Pressure30.00 inHg
Wind7.3 mph SE
Humidity30%
Visibility—
Dew point50°
Wed, 1986° / 70°0
86 °
South Orange, Wednesday, 19 August
Overcast. High 86°, low 70°.
Pressure30.09 inHg
Wind10.1 mph SE
Humidity36%
Visibility—
Dew point54°
Thu, 2088° / 70°0
88 °
South Orange, Thursday, 20 August
Mostly clear. High 88°, low 70°.
Pressure30.00 inHg
Wind10.1 mph SE
Humidity38%
Visibility—
Dew point57°
Fri, 2195° / 72°0.02
95 °
South Orange, Friday, 21 August
Light rain. High 95°, low 72°.
Pressure29.83 inHg
Wind9.4 mph SW
Humidity35%
Visibility—
Dew point61°
Sat, 2295° / 76°0
95 °
South Orange, Saturday, 22 August
Mostly clear. High 95°, low 76°.
Pressure29.85 inHg
Wind9.1 mph NW
Humidity32%
Visibility—
Dew point58°
Sun, 2397° / 75°0
97 °
South Orange, Sunday, 23 August
Clear. High 97°, low 75°.
Pressure29.94 inHg
Wind6.1 mph N
Humidity32%
Visibility—
Dew point54°
Mon, 2492° / 75°0.23
92 °
South Orange, Monday, 24 August
Rain. High 92°, low 75°.
Pressure29.97 inHg
Wind6.5 mph S
Humidity54%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.07
82 °
South Orange, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation23%
Record high95° (1968)
Record low54° (1971)
Wed, 2682° / 65°0.09
82 °
South Orange, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.09 in
Chance of precipitation25%
Record high92° (1993)
Record low55° (1963)
Thu, 2782° / 66°0.16
82 °
South Orange, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.16 in
Chance of precipitation33%
Record high93° (2020)
Record low57° (1969)
Fri, 2881° / 67°0.22
81 °
South Orange, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low67°
Average precipitation0.22 in
Chance of precipitation38%
Record high94° (1973)
Record low56° (2025)
Sat, 2980° / 66°0.15
80 °
South Orange, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low66°
Average precipitation0.15 in
Chance of precipitation35%
Record high93° (2018)
Record low50° (1982)
Sun, 3081° / 65°0.07
81 °
South Orange, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation28%
Record high94° (1973)
Record low49° (1986)
Mon, 3180° / 64°0.06
80 °
South Orange, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.06 in
Chance of precipitation17%
Record high94° (2010)
Record low51° (1965)
Tue, 0179° / 64°0.13
79 °
South Orange, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.13 in
Chance of precipitation32%
Record high94° (2010)
Record low53° (2017)
Wed, 0279° / 63°0.17
79 °
South Orange, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.17 in
Chance of precipitation38%
Record high95° (1980)
Record low51° (2017)
Thu, 0379° / 64°0.13
79 °
South Orange, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.13 in
Chance of precipitation37%
Record high92° (1993)
Record low50° (1967)
Fri, 0480° / 64°0.11
80 °
South Orange, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.11 in
Chance of precipitation30%
Record high92° (2023)
Record low53° (1997)
Sat, 0579° / 64°0.06
79 °
South Orange, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.06 in
Chance of precipitation25%
Record high96° (2023)
Record low53° (1997)
Sun, 0678° / 63°0.2
78 °
South Orange, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high78°
Average low63°
Average precipitation0.2 in
Chance of precipitation28%
Record high95° (2023)
Record low51° (1984)
Mon, 0779° / 62°0.13
79 °
South Orange, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.13 in
Chance of precipitation35%
Record high93° (2023)
Record low49° (1984)
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 South Orange, NJ 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 South Orange, NJ 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.