Monthly outlook for South Bound Brook, NJ: average high 83.9°, average low 67.2°. That is 0.8° above the climate normal for August. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 5 days and 2.3 inches. The warmest day looks like 10 August (93.1°), the coolest 22 August (59.7°).
83.9°/67.2°
Average high / low
+0.8°
Above normal
5 / 5
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
85.2°
83.2°
+1.1°
19 August – 28 August
81.7°
81.6°
+0°
29 August – 7 September
at normal
80.2°
—
August records over 66 years
100.9°9 August 2001All-time high
47.1°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — East Franklin (5 mi).
Mon, 1093° / 73°0
93 °
South Bound Brook, Monday, 10 August
Clear. High 93°, low 73°.
Pressure29.97 inHg
Wind7.5 mph W
Humidity38%
Visibility6.2 mi
Dew point61°
Tue, 1193° / 75°0
93 °
South Bound Brook, Tuesday, 11 August
Overcast. High 93°, low 75°.
Pressure29.88 inHg
Wind6.1 mph W
Humidity42%
Visibility6.2 mi
Dew point62°
Wed, 1285° / 74°0.02
85 °
South Bound Brook, Wednesday, 12 August
Light rain. High 85°, low 74°.
Pressure29.71 inHg
Wind9.1 mph W
Humidity60%
Visibility6.2 mi
Dew point67°
Thu, 1386° / 69°0.03
86 °
South Bound Brook, Thursday, 13 August
Light rain. High 86°, low 69°.
Pressure29.77 inHg
Wind13 mph W
Humidity35%
Visibility—
Dew point54°
Fri, 1480° / 63°0
80 °
South Bound Brook, Friday, 14 August
Clear. High 80°, low 63°.
Pressure30.00 inHg
Wind8.4 mph W
Humidity28%
Visibility—
Dew point42°
Sat, 1583° / 64°0
83 °
South Bound Brook, Saturday, 15 August
Clear. High 83°, low 64°.
Pressure30.09 inHg
Wind11 mph NW
Humidity29%
Visibility—
Dew point45°
Sun, 1683° / 63°0
83 °
South Bound Brook, Sunday, 16 August
Partly cloudy. High 83°, low 63°.
Pressure30.15 inHg
Wind7 mph NW
Humidity24%
Visibility—
Dew point40°
Mon, 1784° / 63°0.1
84 °
South Bound Brook, Monday, 17 August
Light rain. High 84°, low 63°.
Pressure30.09 inHg
Wind6.9 mph SE
Humidity39%
Visibility—
Dew point55°
Tue, 1873° / 66°0.17
73 °
South Bound Brook, Tuesday, 18 August
Light rain. High 73°, low 66°.
Pressure30.09 inHg
Wind5.4 mph S
Humidity79%
Visibility—
Dew point62°
Wed, 1980° / 68°0.01
80 °
South Bound Brook, Wednesday, 19 August
Light rain. High 80°, low 68°.
Pressure29.94 inHg
Wind7.8 mph S
Humidity76%
Visibility—
Dew point63°
Thu, 2081° / 68°1.25
81 °
South Bound Brook, Thursday, 20 August
Heavy rain. High 81°, low 68°.
Pressure29.62 inHg
Wind12.7 mph W
Humidity42%
Visibility—
Dew point55°
Fri, 2180° / 65°0
80 °
South Bound Brook, Friday, 21 August
Clear. High 80°, low 65°.
Pressure29.83 inHg
Wind10.9 mph NW
Humidity32%
Visibility—
Dew point45°
Sat, 2280° / 60°0
80 °
South Bound Brook, Saturday, 22 August
Clear. High 80°, low 60°.
Pressure30.03 inHg
Wind6.8 mph W
Humidity26%
Visibility—
Dew point40°
Sun, 2381° / 62°0.01
81 °
South Bound Brook, Sunday, 23 August
Light rain. High 81°, low 62°.
Pressure30.00 inHg
Wind8.8 mph SW
Humidity58%
Visibility—
Dew point63°
Mon, 2487° / 70°0.04
87 °
South Bound Brook, Monday, 24 August
Light rain. High 87°, low 70°.
Pressure29.88 inHg
Wind10.8 mph W
Humidity37%
Visibility—
Dew point56°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.07
82 °
South Bound Brook, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation22%
Record high97° (1968)
Record low53° (1971)
Wed, 2682° / 65°0.08
82 °
South Bound Brook, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.08 in
Chance of precipitation25%
Record high93° (1993)
Record low55° (1960)
Thu, 2783° / 66°0.15
83 °
South Bound Brook, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low66°
Average precipitation0.15 in
Chance of precipitation35%
Record high94° (2020)
Record low57° (2017)
Fri, 2882° / 67°0.22
82 °
South Bound Brook, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.22 in
Chance of precipitation43%
Record high96° (1973)
Record low56° (1986)
Sat, 2981° / 66°0.13
81 °
South Bound Brook, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.13 in
Chance of precipitation32%
Record high94° (2010)
Record low49° (1986)
Sun, 3082° / 65°0.07
82 °
South Bound Brook, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation28%
Record high96° (1973)
Record low47° (1986)
Mon, 3181° / 65°0.07
81 °
South Bound Brook, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation18%
Record high96° (1973)
Record low50° (1976)
Tue, 0180° / 64°0.13
80 °
South Bound Brook, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation32%
Record high94° (2010)
Record low53° (2017)
Wed, 0280° / 63°0.15
80 °
South Bound Brook, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.15 in
Chance of precipitation32%
Record high96° (1980)
Record low52° (2017)
Thu, 0380° / 64°0.13
80 °
South Bound Brook, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation35%
Record high93° (2015)
Record low49° (1967)
Fri, 0480° / 64°0.09
80 °
South Bound Brook, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.09 in
Chance of precipitation28%
Record high93° (2023)
Record low52° (2024)
Sat, 0580° / 64°0.06
80 °
South Bound Brook, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.06 in
Chance of precipitation18%
Record high96° (2023)
Record low53° (1997)
Sun, 0679° / 63°0.2
79 °
South Bound Brook, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low63°
Average precipitation0.2 in
Chance of precipitation33%
Record high96° (2023)
Record low51° (1984)
Mon, 0780° / 62°0.11
80 °
South Bound Brook, Monday, 7 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.11 in
Chance of precipitation32%
Record high95° (2023)
Record low48° (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 Bound Brook, 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 Bound Brook, 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.