Monthly outlook for Long Hill, NJ: average high 83°, average low 66.1°. That is 0.4° above the climate normal for August. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 6 days and 2.3 inches. The warmest day looks like 11 August (92.5°), the coolest 22 August (58.7°).
83°/66.1°
Average high / low
+0.4°
Above normal
5 / 6
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
85.7°
83.1°
+1.4°
18 August – 27 August
78.6°
81.2°
-1.5°
28 August – 6 September
at normal
80.1°
—
August records over 66 years
101.1°9 August 2001All-time high
50°30 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Winfield (11 mi).
Sun, 0990° / 73°0.04
90 °
Long Hill, Sunday, 9 August
Light rain. High 90°, low 73°.
Pressure29.97 inHg
Wind7.7 mph W
Humidity43%
Visibility6.2 mi
Dew point64°
Mon, 1092° / 72°0
92 °
Long Hill, Monday, 10 August
Clear. High 92°, low 72°.
Pressure29.97 inHg
Wind7.5 mph W
Humidity37%
Visibility6.2 mi
Dew point61°
Tue, 1192° / 74°0
92 °
Long Hill, Tuesday, 11 August
Overcast. High 92°, low 74°.
Pressure29.88 inHg
Wind7.2 mph NW
Humidity39%
Visibility6.2 mi
Dew point60°
Wed, 1284° / 72°0.06
84 °
Long Hill, Wednesday, 12 August
Light rain. High 84°, low 72°.
Pressure29.71 inHg
Wind8.1 mph W
Humidity61%
Visibility6.2 mi
Dew point66°
Thu, 1386° / 67°0.03
86 °
Long Hill, Thursday, 13 August
Light rain. High 86°, low 67°.
Pressure29.77 inHg
Wind12.1 mph NW
Humidity33%
Visibility—
Dew point51°
Fri, 1480° / 61°0
80 °
Long Hill, Friday, 14 August
Clear. High 80°, low 61°.
Pressure30.00 inHg
Wind8.3 mph W
Humidity29%
Visibility—
Dew point42°
Sat, 1581° / 62°0
81 °
Long Hill, Saturday, 15 August
Clear. High 81°, low 62°.
Pressure30.09 inHg
Wind10.9 mph NW
Humidity30%
Visibility—
Dew point45°
Sun, 1682° / 61°0
82 °
Long Hill, Sunday, 16 August
Partly cloudy. High 82°, low 61°.
Pressure30.15 inHg
Wind6.7 mph NW
Humidity24%
Visibility—
Dew point39°
Mon, 1783° / 62°0.08
83 °
Long Hill, Monday, 17 August
Light rain. High 83°, low 62°.
Pressure30.09 inHg
Wind7.6 mph SW
Humidity39%
Visibility—
Dew point53°
Tue, 1873° / 65°0.17
73 °
Long Hill, Tuesday, 18 August
Rain. High 73°, low 65°.
Pressure30.09 inHg
Wind5.3 mph S
Humidity77%
Visibility—
Dew point61°
Wed, 1979° / 67°0.01
79 °
Long Hill, Wednesday, 19 August
Light rain. High 79°, low 67°.
Pressure29.94 inHg
Wind7.4 mph S
Humidity79%
Visibility—
Dew point63°
Thu, 2081° / 66°1.15
81 °
Long Hill, Thursday, 20 August
Heavy rain. High 81°, low 66°.
Pressure29.62 inHg
Wind12.4 mph W
Humidity42%
Visibility—
Dew point54°
Fri, 2179° / 64°0
79 °
Long Hill, Friday, 21 August
Clear. High 79°, low 64°.
Pressure29.83 inHg
Wind11.1 mph NW
Humidity33%
Visibility—
Dew point46°
Sat, 2280° / 59°0
80 °
Long Hill, Saturday, 22 August
Clear. High 80°, low 59°.
Pressure30.03 inHg
Wind6.5 mph W
Humidity24%
Visibility—
Dew point37°
Sun, 2380° / 61°0.01
80 °
Long Hill, Sunday, 23 August
Light rain. High 80°, low 61°.
Pressure30.00 inHg
Wind7.9 mph SW
Humidity60%
Visibility—
Dew point63°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2481° / 65°0.07
81 °
Long Hill, Monday, 24 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (1998)
Record low54° (1971)
Tue, 2582° / 65°0.07
82 °
Long Hill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.07 in
Chance of precipitation22%
Record high96° (1968)
Record low55° (1971)
Wed, 2682° / 65°0.08
82 °
Long Hill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low65°
Average precipitation0.08 in
Chance of precipitation25%
Record high92° (1993)
Record low56° (1963)
Thu, 2782° / 66°0.16
82 °
Long Hill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low66°
Average precipitation0.16 in
Chance of precipitation35%
Record high93° (1980)
Record low57° (2017)
Fri, 2882° / 67°0.22
82 °
Long Hill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low67°
Average precipitation0.22 in
Chance of precipitation38%
Record high95° (1973)
Record low56° (2025)
Sat, 2981° / 66°0.15
81 °
Long Hill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low66°
Average precipitation0.15 in
Chance of precipitation33%
Record high93° (2010)
Record low50° (1982)
Sun, 3081° / 65°0.06
81 °
Long Hill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.06 in
Chance of precipitation27%
Record high95° (1973)
Record low50° (1986)
Mon, 3181° / 65°0.06
81 °
Long Hill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low65°
Average precipitation0.06 in
Chance of precipitation17%
Record high94° (2010)
Record low51° (1976)
Tue, 0179° / 65°0.12
79 °
Long Hill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high79°
Average low65°
Average precipitation0.12 in
Chance of precipitation32%
Record high95° (2010)
Record low53° (2017)
Wed, 0279° / 64°0.17
79 °
Long Hill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.17 in
Chance of precipitation38%
Record high96° (1980)
Record low52° (2017)
Thu, 0380° / 64°0.13
80 °
Long Hill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low64°
Average precipitation0.13 in
Chance of precipitation37%
Record high92° (1993)
Record low51° (1967)
Fri, 0480° / 64°0.11
80 °
Long Hill, 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° (2024)
Sat, 0579° / 64°0.06
79 °
Long Hill, 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 low54° (1997)
Sun, 0679° / 64°0.2
79 °
Long Hill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low64°
Average precipitation0.2 in
Chance of precipitation30%
Record high96° (2023)
Record low52° (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 Long Hill, 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 Long Hill, 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.